The furnace of the present invention includes a body of a furnace having a cylindrical shape; a steel shell which is arranged at an inside surface of the furnace; and a lining refractory which is arranged at an inside of the steel shell and includes a plurality of refractory blocks, wherein: each of the refractory b...

A high-strength steel sheet includes: 0.03 to 0.20% of C, 0.08 to 1.5% of Si, 0.5 to 3.0% of Mn, 0.05% or less of P, 0.0005% or more of S, 0.008 to 0.20% of acid-soluble Ti, 0.0005 to 0.01% of N, more than 0.01% of acid-soluble Al, and 0.001 to 0.04% of one or both of Ce and La in terms of mass%; and the balance inc...

A silicon steel material is heated in a predetermined temperature range according to contents of B, N, Mn, S, and Se (step S1), and is subjected to hot rolling (step S2). Further, a finish temperature Tf of finish rolling in the hot rolling is performed in a predetermined temperature range according to the content...

ABSTRACT A performance evaluation method of a vehicle member includes a calculation process for performing an analysis using a partial structure CAE model modeling a module where a member of a vehicle to be evaluated and a collision test device for conducting a collision test on the member are combined, and obtaini...

A process for producing a sintered ore with an auxiliary heat source is provided which improves the yield and strength of a sintered ore, attains a reduction in discharge gas amount itself, inhibits the generation of controlled substances for the atmospheric environment, e.g., NOx, and can avoid operational dangers....

Disclosed is a plated steel sheet for a can, comprising a tin alloy layer on a steel sheet. The plated steel sheet is characterized in that (i) metallic tin is distributed in a percentage area of 5 to 97% on the tin alloy layer and (ii) a conversion treatment layer comprising a phosphate in an amount of 1.0 to 5.0 m...

Cold worked, machined, and carburized quenched case-hardened steel prevented from formation of coarse grains, that is, case-hardened steel superior in cold workability, machinability, and fatigue characteristics after carburized quenching characterized by limiting, by mass%, S: 0.001 to 0.15%, Ti: 0.05 to 0.2%, Al: ...

A hearth roll for a continuous annealing furnace which little causes the generation of build-up on the surface of a hearth roll and permits stable long-time use under high-temperature conditions in a continuous annealing furnace; and a process for the production of the same. A hearth roll for use in a continuous ann...

The present invention provides a method of hot pressing using hot rolled and cold rolled steel sheet or Al-based plated steel sheet or Zn-based plated steel sheet enabling a strength of at least 1200 MPa to be obtained after high temperature forming and with extremely little possibility of hydrogen embrittlement and...

A non-oriented electrical steel sheet is provided with a base material and an Fe-Ni alloy film formed on at least one surface of the base material. The Fe-Ni alloy film contains, by mass%, Fe: 10% to 40% and Ni: 60% to 90%, and has a thickness of 0.1 urn or more are provided.

The present invention provides a method of cooling a hot-rolled steel strip which has passed through a finishing rolling, including: cooling the hot-rolled steel strip from a first temperature of not lower than 600°C and not higher than 650°C to a second temperature of not higher than 450°C with cooling water having...

First, a slab having a composition satisfying a predetermined condition is heated to from 1100°C to 1250°C . Next, in hot rolling, an outlet side temperature of a rolling pass through which a steel sheet having five times or more thickness of an obtained hot-rolled steel sheet is rolled to five times or less thickn...

This hot rolled steel sheet includes: in terms of percent by mass, C of 0.01 to 0.2%; Si of 0.01 to 2%; Mn of 0.1 to 2%; P of 0.1%; S of 0.03%; Al of 0.001 to 0.1%; N of 0.01%; and as a remainder, Fe and unavoidable impurities, wherein a microstructure is substantially a homogeneous continuous-cooled microstructure,...

A high-strength non-oriented electrical steel sheet contains: by mass%, C: not less than 0.002% nor more than 0.05%; Si: not less than 2.0% nor more than 4.0%; Mn: not less than 0.05% nor more than 1.0%; N: not less than 0.002% nor more than 0.05%; and Cu: not less than 0.5% nor more than 3.0%. An Al content is 3.0%...

The present invention is a method of descaling a steel material which removes scale formed at the time of hot rolling a steel material by spraying jets of high pressure water from a plurality of nozzles on to the surface of the steel material, the method of descaling a steel material comprising giving pulsation of a...

A fracture determination method for determining a fracture of a metal structure includes, when a fracture determination target portion has returned from a plastic state to an elastic state, given that a stress when the portion returned to the elastic state is (x, y) _ (σ2, σ l) (maximum principal stress: (σ 1,...

An easily and inexpensively producible surface-treated metal plate which uses a continuous coating facility for a surface-treated metal plate to provide at least two coating layers, which surface-treated metal plate is excellent in interlayer adhesion between one coating layer and a coating layer directly below it a...

ABSTRACT The present invention provides a method of treatment of a granulated material for sintering use which enables the strength of the granulated material to be maintained and further which enables continuous granulation in a continuous treatment line even when the granulated material is exposed to excessive mo...

An object of the present invention is to provide a technique for suppression of rough tapping which reliably fills the blast furnace lining back surface clearance in the vicinity of tap hole from which furnace gas leaks and enables a furnace gas seal effect due to filling of injection material to be maintained for a...

Disclosed is a method for the cathodic electrocoating of a tin-coated steel sheet in a treatment 5 solution that does not contain any Cr compound, F or nitrite nitrogen. In the method, a tin oxide layer that is not subjected to a cathodic electrocoating treatment yet and is arranged on a tin-coated steel sheet ...

A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass% or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mo...

A gas charge container includes a sample holder which holds a needle-shaped material, a deutrium gas supply portion which charges a deutrium gas into the needle-shaped material held by the sample holder, and a heating portion which heats the needle-shaped material held by the sample holder. The needle-shaped mater...

Equipment for supplying lubricant for a rolling mill 20 of a rolling mill of a flat shaped metal material M comprises a plurality of spray nozzles la and lb which spray a lubricant toward a rolling roll together with a gas in a particulate or atomized state, a lubricant feed device 2, 3, and 4 which feeds the s...

A hydroforming apparatus and working method able to simply find a load path are proposed, which system and method use a mold in which contact sensors able to judge contact with a metal tube inside the mold are mounted at least at two different positions in the tube axial direction, perform a first step of axially pu...

The present invention provides metal-based flux cored wire able to reduce the amount of production of slag and to secure a good coatability and a gas shielded arc welding method and a method of formation of a high fatigue strength welded joint resulting in a small amount of production of slag using the same, that...

Maximum allowable load values of a welded portion in respective fracture modes of a "Load fracture, a moment fracture, and a nugget interior fracture are found based on at least one of a sheet thickness t, a tensile strength IS, an elongation El, and a chemical composition of a nugget portion in each of spotwel...

A stave cooler for a blast furnace wherein a supply/drainage pipe is welded to a copper or copper-alloy stave body and the stave body is fastened to a blast furnace shell by multiple steel fastening bolts, which stave cooler comprises a protective tube welded to the stave body so as to enclose the supply/drainage pi...

In a method of capturing carbon dioxide in a gas, carbon dioxide in a gas is adsorbed to the hybrid adsorbent prepared by mixing an adsorbent with iron oxide nanoparticles, microwaves are irradiated to the hybrid adsorbent and the carbon dioxide adsorbed to the hybrid adsorbent is desorbed from the hybrid adsorbent,...

An apparatus for producing a steel sheet plated by hot dipping with alloyed zinc. It can conform to abrupt changes in the kind of steel, deposit amount, and other external factors to enable a steel plate plated by hot dipping with alloyed zinc to be produced always under optimal production conditions. The apparatus ...

A non-oriented magnetic steel sheet having an excellent yield strength and suitable for use as an iron core material for high-speed rotary motors. It can be provided without sacrificing yield or productivity in punching for motor core production and in the production of the steel sheet. The non-oriented magnetic ste...

A producing method of direct reduced iron includes the steps of: drying an oxidized iron raw material selected from a group including iron ore and iron-making dust generated in an iron-making process to have a predetermined moisture content; mixing the oxidized iron raw material subjected to the drying step and a...

The present invention provides a non-oriented electrical steel sheet having crystal grains of small diameter and excellent workability before stress relief annealing and having crystal grains of largely grown diameter and excellent iron loss property after stress relief annealing and a method for producing the same,...

The present invention provides a non-oriented electrical steel sheet for a small-sized precision motor capable of suppressing the connection incidence between steel sheet and a copper wire to a low level when the electrical steel sheet is punched to prescribed shape, laminated and clamped, and then insulation is sec...

The object of the present invention is to provide an Fe-based amorphous alloy thin strip capable of realizing an excellent soft magnetic property for use in alternating current applications while keeping a high magnetic flux density even in a composition range with a high Fe content, and an Fe-based amorphous alloy ...

A silicon steel material having a prescribed composition is heated. A steel strip is obtained by performing hot rolling of the heated silicon steel material. Cold rolling of the steel strip is performed. Next, finish annealing of the steel strip is performed. An inlet side temperature is not less than 50°C and a str...

The invention has as its object to perform hydroforming so that no buckling or wrinkles remain at a hydroformed product with a long expanded region and comprises performing a first step of raising the internal pressure in a state with the metal tube fixed in position at the two ends or a state applying axial pushing...

Provided is a method for measuring a water content in a compound using a 3-wavelength type infrared water content tester, in which the method uses a reference wavelength combination of a long-wavelength-side reference wavelength “λL” longer than a wavelength “λW” absorbed by water and a short-wavelength-side referen...

In pickling a hot-rolled sheet containing Si: 0.3 mass% to 4.0 mass%, Al: 0.001 mass% to 2.0 mass%, and Mn: 0.05 mass% to 2.0 mass% and the balance being Fe and inevitable impurities, the pickling solution is set to have the concentration of hydrochloric acid: 3% to 20% and the solution temperature: 7 0°C to 9 8°C,...

An impact treatment method for improving fatigue characteristics of a welded joint comprising pressing an impact pin against the surface of a base metal material near a toe of a weld bead and making it move relatively to the weld line direction to apply hammer peening treatment or ultrasonic impact treatment, charac...

The present invention solves the problem of melting of Al in heating before hot-stamping, which had been a problem in the past in applying hot-stamping to Al-plated steel sheet, and provides Al-plated steel sheet for hot-stamping and a method of hot-stamping using that Al-plated steel sheet to solve the problem of d...

The invention provides a metallic flux cored wire which is suppressed in the formation of slag and can secure good coatability; a gas-shielded arc welding process with the wire; and a process for the production of welded joints having high fatigue strength with little slag. A wire for gas-shielded arc welding compri...

The object is to raise the yield by greatly eliminating the disposed amounts of the tube ends, prevent wrinkles due to closing the mold while applying internal pressure, cutting the plurality of steps of hydroforming and pre-processing of the tube ends, cutting the mold costs by simplifying the mold mechanism, and o...

A metal material of the present invention is composed of an underlying metal and a phosphate compound-based film which is disposed on the surface of the underlying metal and has a surface part, in which the surface part of the phosphate compound-based film contains Zr.

Laminated steel sheet for a container material with a small environmental load container material and coating pre-coated steel sheet for a container material characterized by comprising steel sheet having on it a tin layer or iron-tin alloy layer which has on it a tin oxide layer of a thickness measured by an electr...

NA

In a method of producing a reduced iron cast, a cast of a powder which includes total iron of 40% or more and an atomic molar amount of fixed carbon of 0.7 to 1.5 times the atomic molar amount of oxygen compounded with metal oxide reduced in a carbon monoxide atmosphere at 1200°C is reduced in a rotary hearth fur...

This desulfurization method of molten pig iron in which an immersing freeboard and an injection lance are immersed into the molten pig iron inside a molten pig iron ladle, and an inert gas and CaO powder are injected from the injection lance, thereby desulfurizing the molten pig iron includes: adding metallic Al on ...

A slab with a predetermined composition is heated at 1280°C to 1390°C to make a substance functioning as an inhibitor to be solid-solved (step S1). Next, the slab is hot-rolled to obtain a steel strip (step S2). The steel strip is annealed to form a primary inhibitor in the steel strip (step S3). Next, the steel s...

A producing method of a sinter which includes blending an iron-containing raw material including a plurality of brands of iron ores, an auxiliary material, a solid fuel, and return fines as a sintering feed, mixing and granulating the sintering feed, charging the sintering feed onto a sintering pallet, and sintering...

A coke includes pores having a diameter of 1 µm or more and 10 µm or less in a total volume per gram of 2 5 mm3/g or more, and a drum strength index DI15015 of the coke is 70 or higher.

The present invention has as its object to provide hot dip galvannealed steel sheet and method of production of the same using an ultra-low carbon steel sheet excellent in corrosion resistance, workability, and coatability as a sheet material and a method of production of the same. Further, the present invention has...

The present invention provides a method for producing a highly active catalyst for reforming tar-containing gas used to treat crude gas for chemical energy conversion consisting of converting to a fuel composition consisting mainly of methane, hydrogen and the like, by utilizing sensible heat possessed by crude gas ...

A trouble classification ID and a cause ID are mutually associated with an operating index and a guidance ID. When an operator specifies a target period and a target operating index, a record of the target operating index in the target period is obtained. Further, a "trouble classification ID and cause ID" associate...

A vertical furnace provided in its top peripheral wall with a gas intake port and operated with an upper furnace unit sealed by raw materials present inside the furnace above the gas intake port, which is equipped with: (i) a right circular steel cylinder provided in the sealed zone in the upper furnace unit for par...

A method of operating a shaft furnace charging an iron source containing sheet scrap iron in 50 mass% to 90 mass% and coke in alternating layers over a coke bed filled inside a furnace lower portion from the furnace top and blowing air from tuyeres at the lower portion of the furnace to melt the iron source, compris...

A plant control system includes a process computer (1) managing a plant, a PLC (2) interposed between the process computer (1) and equipment (3) of the plant, and a general-purpose PC (7) executing arithmetic processing based on arithmetic data received from the PLC (2) and transmitting arithmetic result data thereo...

A method for producing a hot dip plated steel sheet, the method controlling a coating weight by injecting a gas toward a surface of a steel sheet from a time when the steel sheet continuously immersed into a plating bath is pulled up from the plating bath to a time when plating metal adhered onto the surface of the ...

A method of producing a coal caking additive for addition to coal charged into a coke oven, which is characterized by returning distilled vapor, which is produced in the distillation tower (10) and which contains low boiling point components, to a produced-COG carrying line (2), in which the COG produced in a coke o...

A method of detection of a solidification microstructure of steel characterized by polishing a cross-section of a sample of a steel cast slab, heating the sample to 40 to 90°C, then bringing a polished surface of the sample into contact with a corrosive solution to corrode the polished surface. Further, this heats t...

A continuous casting device for steel of the present invention includes a casting mold for casting a molten steel, a submerged entry nozzle, an electromagnetic stirring device, and an electromagnetic brake device.  Further, a curved portion which is curved toward the electromagnetic stirring device is formed at leas...

Steel for machine structure use for surface hardening containing, by mass%, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 1.5% to 3.0%, W: 0.0025 to 0.5%, Al: 0.001 to 0.5%, N: 0.003 to 0.02%, S: 0.0001 to 0.025%, P: 0.0001 to 0.03%, and 0: 0.0001 to 0.0050%, having an Mn/S of 70 to 30000, and having a balance of substantia...

A steel piece scarfing device according to the present invention includes: lower end shield fuel gas nozzles that blow shield fuel gas onto a lower surface of a steel piece; a lower end shield fuel gas cylinder that supplies the shield fuel gas to the lower end shield fuel gas nozzles; a fuel gas supply line that su...

The oxide film thickness of the steel material surface (dH2o+d02) is made to become 15 nm or less where post-treatment after water-cooling is not needed by suitably setting the conditions of the water-cooling start temperature (Ti) , water-cooling end temperature (T0), steel material thickness (d), concentration of ...

An apparatus of the present invention for scarfing a steel piece by blowing a fuel gas onto the steel piece, the apparatus includes: a fuel gas cylinder including a fuel gas region which is supplied with the fuel gas, and an inert gas region which is supplied with an inert gas; a plurality of nozzles each having one...

A surface-treated metal material not containing high environmental load hexavalent chrome, relatively easy to produce, and extremely superior in stain resistance, solvent resistance, alkali resistance, corrosion resistance is provided. The present invention is a chromate-free surface treated metal material characte...

A method in which slag is cooled in a treatment step without generating strongly alkaline water and without necessitating a prolonged time for the treatment. Using this method, slag is efficiently recovered as a valuable material and the metal contained in the slag is efficiently recovered. Also provided is an appar...

A hot scarfer for a ferrous metal slab comprised of a plurality of scarfer units, each comprised of an upper block and lower block provided with fuel gas ejectors, an oxygen passage provided between the upper blocks and lower blocks, and a shoe fastened to the lower block, arranged in the horizontal direction, where...

The present invention provides an immersion nozzle able to be improved in durability and a continuous casting method including a preheating step of preheating this immersion nozzle, that is, an immersion nozzle used in a continuous casting method of molten metal, characterized in that it is formed by refractories c...

A method of analyzing a cause of springback of the invention includes: performing a forming analysis to calculate forming data of a formed product; decomposing a component into an in-plane stress component and a bending moment component; generating a before-calculation individual decomposition forming data; performi...

A high strength steel material which is excellent in delayed fracture resistance containing, by mass%, C: 0.10 5 to 0.55%, Si: 0.01 to 3%, and Mn: 0.1 to 2%, further containing one or both of V: 1.5% or less and Mo: 3.0% or less, the contents of V and Mo satisfying V+1/2Mo>0.4%, further containing one or more o...

A producing method of blast furnace coke includes classifying an inertinite, which has a maximum length of 0.6 mm or more, into a size class of a size classification number m according to a maximum length; determining an influence factor Ai (-/vol.%) of an inertinite in the size class i on a ratio of surface breakag...

A method of granulating a sintering feed using an X-ray CT includes a granulation process of adding moisture and granulating a sintering feed; a granule measurement process of measuring a weight M of the granule and obtaining the volume V of the granule from the CT cross-sectional image; a dried material measurement...

The object is to eliminate the difference in offset of work rolls at the upper and lower and left and right of the rolling mill occurring in the kiss roll state of the zero point adjustment work before rolling or during rolling and eliminate the problem of warping of the flat products or meander or camber due to the...

This hot-rolled steel plate includes, in terms of mass %, C: 0.025 to 0.15 %, Si: 0.01 to 1.0 %, Mn: 1.0 to 2.5 %, P: 0.02 % or less, S: 0.005 % or less, Al: 0.5 % or less, Ti: 0.04 to 0.10 %, and N: 0.007 % or less, with a remainder being Fe and unavoidable impurities, wherein a Mn/Ti ratio is 15 or more, Nb is not...

Nitriding process of a steel strip is performed. Next, annealing is performed to form a forsterite based glass coating film at a surface of the steel strip. Heating is performed up to 1000°C or more in a mixed gas atmosphere containing H2 gas and N2 gas, and a rate of N2 gas is 20 volume% or more, next, the atmosphe...

In an induction motor group control system, magnetic energy recovery switches (3) are connected in series to an induction motor (2) directly driven by a commercial power supply, and a plurality of induction motor control devices (10) enabling voltage control and reactive power control of the induction motor 2 are em...

The present invention provides a titanium slab for hot rolling which can be fed into a general purpose hot-rolling mill for producing strip coil, without passage through a breakdown process such as blooming or a straightening process, and can further suppress surface defect occurrence of the hot-rolled strip coil, a...

A hydroforming method capable of easily producing a hydroformed product which has a complex shape and is formed so that the axis of the hydroformed product includes a bend. A hydroforming method is configured in such a manner that no axially pressing cylinder is disposed on one end side (3a) of a metallic pipe (3) i...

This invention provides a precoated metal plate that is improved in color shading prevention and adhesion and is produced by simultaneous multilayer coating. In the precoated metal plate, the center line average roughness Ra in the coating film interface is not less than 0.3 μm, and the maximum height from the wavin...

In a push-in screw device, push-in screws are disposed so that the rotary drive shafts thereof are lined up along the same straight line in a plan view, the positions of the lower ends in the vertical direction of screw blades are the same and the winding directions of helical shapes of the adjacent screw blades ...

A zinc or zinc alloy plated steel sheet expressing a performance provided with both corrosion resistance and surface conductivity is provided. The zinc or zinc alloy plated steel sheet of the present invention is a zinc or zinc alloy plated steel sheet having an arithmetic average roughness Ra of a zinc-plated layer...

Disclosed is a surface-treated precoated metal sheet of which resistance against contamination with a photocatalyst and a self-cleaning function can be retained for a long period. Also disclosed are a method and a surface-treating solution for producing the surface-treated precoated metal sheet properly. The surface...

A method for producing reduced iron including a mixture of metal iron and slag components by drying a molded body or the compact obtained by molding a raw material which contains iron oxide as a main component and to which a carbonaceous reducing material for reduction is added, and then by feeding the molded bod...

Electric resistance welded steel pipe excellent in deformability and fatigue properties after quenching which enables working into complicated shapes without spheroidization and which improves the fatigue properties after cold working and quenching without carburization are provided. The electric resistance welded s...

Provided is a submerged nozzle for continuous casting which discharges a molten steel into a casting mold for continuous casting of an iron steel, the submerged nozzle comprising a cylindrical nozzle main body, wherein: four molten steel discharge ports are formed at a top left, a bottom left, a top right, and a bot...

Disclosed is a steel sheet that is for a vessel and that is provided with: a steel sheet; an Ni plating layer formed from 0.3 3 g/m of deposited Ni and containing Co in the range of 0.1 100 ppm; and a chromate coat layer formed from the deposition of 1 40 mg/m in Cr equivalents formed on the surface of the aforement...

A continuous casting machine, which includes a plurality of support rollers arranged to face each other so that a passage of a slab is interposed between the support rollers, wherein each of the support rollers has a plurality of divided rollers arranged in a width direction of the slab, and wherein, for each of the...

Steel for machine structure use excellent in tool lifetime in a broad range of cutting speeds regardless of continuous machining, intermittent machining, or other systems and further in various machining environments such as use of a cutting fluid or a dry, semidry, and oxygen enriched environment, having a chemical...

A producing method of blast furnace coke includes: warming a coal-derived liquid caking additive to a temperature equal to or higher than a liquefaction temperature at which the viscosity of the coal-derived liquid caking additive becomes 100 cP and equal to or lower than a liquefaction temperature at which the visc...

Provided are a common definition term storage unit (220) that associates production line terms, which are used to describe guidance rules of production lines and which have the same meaning and content, with common definition terms and that stores the production line terms and the common definition terms, a common n...

The invention is directed to providing, for application in automobiles, construction materials, household appliances and the like, high-strength sheets excellent in formability properties such as hole expansibility and ductility, and also in fatigue resistance, characterized in comprising, in specified contents expr...

An inorganic-organic composite film is formed by coating a application liquid containing an inorganic component and an organic resin on a surface of a steel sheet, and baking the application liquid on the surface of the steel sheet. The application liquid contains phosphate as the inorganic component, and further c...

The present invention relates to a steel part securing temper softening resistance at 300°C characterized by (a) the content of Si in the steel being made 0.7% or more, (b) the content of C in the carburized layer being made 0.9 to 1.1% for a hyper eutectic content of C by carburization, (c) the carbides with a...

In a method for charging high-temperature coal, high-temperature coal is charged into a chamber which has a plurality of coal charging ports aligned in an upper part thereof and a first gas suction portion at an end parts of the upper part. In the charging of the high-temperature coal, a starting sequence of char...

A binder for monolithic refractories characterized by containing ingredients comprised of a chemical composition of at least one of CaxSr1-xAl204, and CaySr1-yAl407 or these plus 12 (CaO) z (SrO) 1-z.7A12O3 (where, 0

Disclosed is a steel pile driving method for driving a steel pile into the ground using a vibratory hammer and a transfer pipe that is disposed along the lengthwise direction of the aforementioned steel pile wherein the steel pile driving method involves a step for inserting the aforementioned steel pile to a prescr...

A cast piece surface temperature measuring device includes: a magnetic field exciting device which applies an AC magnetic field substantially perpendicular to a surface of a cast piece; a magnetic field detecting device which detects the AC magnetic field to detect a magnetic flux varied in response to a surface tem...

A powder transport method characterized in that a powder containing 30 mass% or greater of grains of 45 µm or less is mixed with silicone oil and transported together with a carrier gas/ wherein the mixing ratio of the silicone oil relative to the powder is made 0.1 to 0.5 mass% and the powder is a refining agent co...

This slag foaming depressant material includes a mixture containing 20% by mass or more and 40% by mass or less of a carbon powder having a particle size of 0.2 mm or more and 2 mm or less, and 30% by mass or more and 60% by mass or less of moisture; and a container for containing the mixture, formed from a non-wate...

High strength hot dipped galvanized steel sheet with little fluctuation in material quality at the time of production and excellent in shapeability is provided. By controlling the amount of addition of Ti instead of the addition of Nb or B, it is possible to obtain an effect of retarding recrystallization and g...

This pearlitic rail consists of a steel including: in terms of percent by mass, C: 0.65% to 1.20%; Si: 0.05% to 2.00%; Mn: 0.05% to 2.00%; and REM: 0.0005% to 0.0500%), with the balance being Fe and inevitable impurities, wherein, in a head portion of the rail, a head surface portion which ranges from surfaces of he...

A method of measuring a dilatation of a coal includes: charging a coal into a dilatometer tube; inserting a piston into the dilatation tube; heating the coal so that a rate of a temperature increase in the plastic stage of the coal is 6 °C/min or higher; measuring a displacement of the piston; and obtaining a dilata...

The present invention provides a steel sheet for a container including: a plated layer containing an adhesion amount of 300 to 1000 mg/m2 of nickel, provided on at least one surface of a steel sheet as metal Ni; and a chemical conversion treatment film formed on the steel sheet by performing immersion or a cathod...

The present invention provides a carburized steel part obtained by subjecting a base material to a cutting operation and a carburizing operation, in which the base material includes chemical components of: C: greater than 0.3 but less than or equal to 0.6% by mass; Si: 0.01 to 1.5% by mass; Mn: 0.3 to 2.0% by mass; ...

There are provided: an oven body management server (1) forming and storing inspection and repair management guideline data of a coke oven body; a wall surface management information input unit (3) transmitting, as wall surface management information (4), inspection and repair information relating to a wall surface o...

The present invention has as its object the provision of a method of crushing iron ore material which enables an increase in the amount of fine powder of the iron ore material. It provides a method of crushing iron ore material using a roll crusher characterized by mixing a first iron ore material which is to be cru...

An acquisition unit acquires operation process data (including first process data operable by an operator and second process data different from the first process data) of a manufacturing facility from a facility management apparatus. A search unit searches past operation process data similar to current operation pr...

This roll spacing measurement apparatus is provided with a sensor device that measures a spacing between at least a pair of rolls arranged facing each other on opposite sides of a billet passage of a continuous casting machine. The sensor device is provided with: a movable type sensor head having a cylindrical ma...

An alloy with a high glass forming abilityl characterized by containing a group of elements A with atomic radii of less than 0.145 nm of a total of 20 to 85 atm%, a group of elements B with atomic radii of 0.145 nm to less than 0.17 nm of a total of 10 to 7 9.7 atm%, and a group of elements C with atomic radii of 0....

A coke dry quenching method for recovering heat in the form of steam in a waste heat boiler using a quenching column comprising a cooling chamber and a prechamber located above by loading red heat coke from above the prechamber, blowing air and/or water or steam into the prechamber, and exchanging sensible heat of t...

Steel sheet for container use with excellent can-making workability and with excellent drawability and ironability, weldability, corrosion resistance, coating adhesion, film adhesion, and wettability characterized in that a surface of the steel sheet has a Zr film which contains, by amount of metal Zr, 1 to 100 mg/m...

A steel product for welding includes the following component: by mass%, C: 0.3% or less, Si: 0.5% or less, Mn: 0.3 ~ 2%, P: 0.03% or less, S: 0.03% or less, Al: 0.3 ~ 5%, O: 0.003 ~ 0.01%, and N: 0.006% or less; wherein the balance is composed of Fe and inevitable impurities; wherein Al-containing oxides having a si...

A catalyst for reforming a tar-containing gas, wherein: the catalyst comprises at least one composite oxide as oxide containing nickel, magnesium, cerium and aluminum; and the content of alumina as a single compound is limited to 5% by mass or less.

A surface-treated metal material, comprising: a metal material, and a coating film disposed on the surface thereof, the coating film containing (A) an organic resin having a glass transition temperature of more than 35°C and not more than 100°C, and (B) an organic resin having a glass transition temperature of more ...

An inexpensive chromate-free black metal sheet not containing the high environmental load hexavalent chromium and extremely excellent in finish (coloring power and concealing power including worked parts), moisture resistance, corrosion resistance, formability, scratch resistance, chemical resistance, etc. The pres...

The provision of beautiful colored titanium which is excellent in adhesion of the pure titanium or a titanium alloy with the base material, is excellent in photocatalytic activity, and further is excellent in design properties and a method of production of the same which is excellent in productivity and uses an ano...

There is produced a molten steel containing, in mass%, Si: not less than 0.1% nor more than 7.0%, Mn: 0.1% or more, Al: not less than 0.2% nor more than 5.0%, Cr: not less than 0.1% nor more than 10%, and the like, and a balance composed of Fe and inevitable impurities. To the molten steel, REM: not less than 0.0...

A first step where a computer performs press forming analysis based on a shape of a formed product or a shape of a member, a blank holder force, a friction coefficient, a tensile strength of a material, a yield strength, a stress-strain relation, and a sheet thickness, as press forming conditions, to calculate sheet...

A thermal-spraying repairing apparatus, which repairs a carbonization chamber wall brick of a coke oven by thermal spraying, includes a first burner and a second burner each having a powder-jetting nozzle which jets thermal-spraying powder, and a plurality of flame-radiating nozzles arranged around the powder-jettin...

A method of casting a semi-liquid or semi-solid iron-based alloy, the method including: applying, to a part or to the whole of an uppermost surface of an inner surface of a die, a lubricating die-release agent in which particles including at least one selected from molybdenum disulfide, graphite, tungsten disulfide,...

The present invention lowers the strength before nitriding to improve the machinability, while deepens the effective hardened case of the nitrided case for improving the fatigue strength. It provides steel for nitriding use containing, by mass%, C: 0.05 to 0.30%, Si: 0.003 to 0.50%, Mn: 0.4 to 3.0%, Cr: 0.2 to 0.9%,...

The present invention provides an electromagnetic steel sheet having an insulating coating on a surface of the electromagnetic steel sheet, the insulating coating including: a binder solution solid content containing metal phosphate; and a silica or silicate filler having an average particle diameter in a range of 2...

The present invention provides high strength thick-gaugeelectric-resistance welded steel pipe excellent in hardenability, hot workability, and fatigue strength and a method of production of the same, that is, thick-gauge electric-resistance welded steel pipe containing, by mass%, C: 0.25 to 0.4%, Si: 0.01 to 0.50%, ...

A continuous cast slab includes the following component: by mass%, C: 0,01 ~ 0.3%, Si: 0.05 ~ 0.5%, Mn: 0.4 - 2%, P: 0.03% or less, S: 0.03 or less, Al: 0.005 ~ 0.03%, Ni: 0.2 ~ 2%, O: 0.006% or less, and N: 0.006% or less; wherein the balance is composed of Fe and inevitable impurities; wherein a structure in stee...

High strength steel wire for spring containing, by mass%, C: 0.67% to less than 0.75%, Si: 2.0 to 2.5%, Mn: 0.5 to 1.2%, Cr: 0.8 to 1.3%, V: 0.03 to 0.20%, Mo: 0.05 to 0.25%, W: 0.05 to 0.30%, and N: 0.003 to 0.007%, having a total of contents of Mn and V of 0.70%≤Mn+V≤l.27% and a total of contents of Mo and W of 0...

A Zn-Al-Mg coated steel sheet includes a steel sheet; and a coating layer including 4 to 22 mass% of Al, 1 to 5 mass% of Mg, and a balance including Zn and inevitable impurities, in which the diffraction intensity ratio I (200) /I (111), which is a ratio of the X-ray diffraction intensity of the (200) plane of an Al...

The invention relates to precoated sheets,including precoated metal sheets, each having an appearance of orange peel, and good workability and scratch resistance. The precoated sheet of the invention has a filtered center line waviness curve (Wca) of the outermost surface of coated film of 0.35 µm ≤ Wca ≤ 1.25 µm, a...

Disclosed is an aqueous treatment liquid for Sn-plated steel sheets, which is characterized by containing an organic matter (A), a water-soluble chromium compound (B), a water-dispersible silica (C) and water. This aqueous treatment liquid is further characterized in that the organic matter (A) is composed of at lea...

A high strength steel sheet excellent in formability which has a chemical composition in mass %: C: 0.03 to 0.20%, Si: 0.005 to 0.3%, Mn: 1.0 to 3.1%, P: 0.001 to 0.06%, S: 0.001 to 0.01%, N: 0.0005 to 0.01%, Al: 0.2 to 1.2%, Mo g 0.5%, and the balance: Fe and inevitable impurities, with the proviso that the values ...

A grain-oriented electrical steel sheet having a B8 value satisfying the relation 1.80 < B8 (T) < 1.88, containing, in terms of percent by weight, 2.5 to 4.0%, of Si, 0.02 to 0.20% of Mn, and 0.005 to 0.050% of acid-insoluble Al, and having an average grain diameter of 1.5 to 5.5 mm and a. W17/50 value satisfying th...

A steel having few alumina clusters prepared by casting liquid steel deoxidized with Al, with the addition of one or more rare-earth metals (REM) selected from the group of Ce, La, Pr and Nd in which: (a) The REM-oxide-content in oxide-based inclusions consisting mainly of alumina and REM-oxides is 0.5 to 15 ...

[Problem] The present invention provides a process for producing and casting a molten steel as material for a low carbon steel sheet on which formation of surface defects can be surely prevented by decreasing inclusions in the molten steel, preventing aggregation of inclusions and finely dispersing inclusions in t...

The present invention provides a high corrosion resistance galvannealed steel material having a hairline appearance able to be used for the same applications as applications for stainless steel material, that is, a high corrosion resistance galvannealed steel material having a hairline appearance having a plating la...

A coke dry quencher (CDQ) circulation blowing method able to start up without using an electrically driven small sized circulation blower at the time of startup, but using a circulation blower driven by a steam turbine used in steady operation, and a circulation blowing system simplified in facilities are provided, ...

A method of continuous casting of steel in which a cast piece excelling in surface and internal qualities can be produced while preventing any sucking of nonmetal inclusions, such as alumina, causing slivers and argon bubbles causing blowholes. Supply of molten steel into casting mold (3) is carried out by forming t...

To provide a hot dip Zn-Al based alloy plated steel product which exhibits high corrosion resistance and is excellent in the bending workability of its plating layer, and a method for producing the plated steel product. Provided are a hot dip Zn-Al based alloy plated steel product is excellent in the bending workabi...

The invention provides a wear-resistant steel which has a hardness of HB400 to HB520 and exhibits little hardness change in long-term service and which is excellent in toughness, namely, a steel which contains by mass C: 0.21 to 0.30%, Si: 0.30 to 1.00%, Mn: 0.32 to 0.70%, P: 0.02% or below, S: 0.01% or below, Cr: 0...

In a punching method also applicable to a thin hydro-form molding, a short tube member is eliminated when a nut for tightening a bolt is fixed to a hydro-form molding, the degree of difficulty of hydro-form molding does not rise when a nut is fixed, and the nut is lengthened so that sufficient strength can be assure...

Provided are amorphous thin band take-up roll switching apparatus and method, which realize, when a take-up device having a plurality of take-up rolls magnetized on their surfaces is used to take up an amorphous alloy thin band, the stable switching of the take-up rolls is realized conveniently and cheaply irrespect...

A steel sheet for continuous cast enameling which has non-aging properties and is excellent in the unsusceptibility to fishscaling of an enamel coating formed by one enameling operation; and a process for producing the steel sheet. The steel sheet contains, in terms of mass%, 0.003-0.010% C, 0.03-1.30% Mn, 0.001-0.1...

A method of producing a high-strength thin steel sheet drawable and excellent in a shape fixation property, characterized by comprising the steps of rough hot rolling a slab containing the chemical components; C: 0.01. to 0.3%, Si: 0.01 to 2%, Mn: 0.05 to 3%, P: 0.1% or less, S: 0.1% or less, Al: 0.005 to 1%, ...

Non-oriented electrical steel sheet remarkably improved in magnetic properties in the rolling direction by a method superior in cost and productivity, that is, non-oriented electrical steel sheet excellent in magnetic properties in the rolling direction comprising, by wt%, Si in an amount of 2.0% or less, Mn in 3.0%...

A steel sheet satisfactory in coating curability in baking and cold slow-aging property; and a process for producing the steel sheet. The steel sheet contains 0.0005-0.0040 mass% carbon, up to 0.8 mass% silicon, up to 2.2 mass% manganese, 0.0005-0.009 mass% sulfur, 0.4-1.3 mass% chromium, 0.003-0.020 mass% oxygen, 0...

This hot rolled steel sheet for processing includes: in terms of percent by mass, C of 0.01 to 0.2%; Si of 0.01 to 0.3%; Mn of 0.1 to 1.5%; P of <0.1%; S of <0.03%; Al of 0.001 to 0.1%; N of <0.006%; and as a remainder, Fe and unavoidable impurities, wherein the microstructure includes a main phase in the form of po...

CONTINUOUS ANNEALING AND HOT DIP PLATING METHOD AND CONTINUOUS ANNEALING AND HOT DIP PLATING SYSTEM OF STEEL SHEET CONTAINING SI The present invention provides, in a hot dip plating system having an annealing furnace for hot dip plating steel sheet containing Si, a continuous annealing and hot dip plating m...

Oven wall three-dimensional profile data (701) indicating the quantity of roughness all over the right and left oven walls (14R and 14L) of a carbonizing chamber (11) is created by using an image signal obtained by a wall-surface observing device (200). The oven wall three-dimensional profile data (701) is used to d...

The present invention provides a facility able to produce high strength steel sheet or hot dip zinc coated high strength steel sheet which makes the quenching facility and tempering facility continuous treatment facilities so that not only does the improvement in the material quality due to tempering enable im...

Disclosed are a weld joint and a stainless steel-based weld metal composition for the weld joint. The composition and weld joint made therefrom are suitable for welding a zinc-based alloy coated steel sheet. The weld is excellent in corrosion resistance and liquid-metal embrittlement crack resistance. This is accomp...

Disclosed is a method of injecting an aggregate, which can restore the deteriorated thermal conductivity of the inside of a furnace wall due to the formation of a small gap in the bottom portion of the blast furnace. The method includes injecting a filler into a gap having a width of about 1mm or less formed in the ...

This invention provides a unidirectionally grain oriented electromagnetic steel sheet comprising, by mass, 2 to 7% of Si and having a primary film composed mainly of forsterite on its surface. The primary film comprises at least one element selected from Ca, Sr and Ba, a rare earth metal element, and a sulfur-contai...

The present invention provides a high-strength thin steel sheet drawable and excellent in a shape fixation property and a method of producing the same. The present invention is a high-strength thin steel sheet drawable and excellent in a shape fixation property, characterized in that: on a plane at the center of th...

The present invention provides a method of supplying lubrication oil in cold rolling for stable rolling without heat scratches or slip and realizing high productivity and improvement of the specific consumption of lubrication oil, that is, a method of supplying lubrication oil in cold rolling for lubricating rolling...

A method of supplying lubricating Oil in cold rolling by emulsion lubrication, characterized by comprising using a constant (supply efficiency) obtained under conditions of a specific rolling rate, emulsion supply, emulsion concentration, emulsion temperature, plateout length, rolled material width or roll barrel...

The present invention provides a method for supplying lubricant to various kinds of steel sheets with different qualities in cold rolling without any restrictions, such as lubricant supplying apparatus or lubrication conditions. This method comprises storing two or more kinds of lubricant such as A and B, havi...

This surface-treated metal material includes a composite film obtained by applying a metal surface treatment agent on a surface of a metal material and drying the metal surface treatment agent, the metal surface treatment agent containing: an organic silicon compound (W) obtained by combining a silane coupling agent...

In a technology for improving iron loss of a directional electromagnetic steel plate moving in the rolling direction at a speed Vl by performing scanning irradiation with a laser beam of elliptical spot in the plate width direction at a speed Vc, the angle θs between the scanning direction of the elliptical beam and...

An oven wall brickwork structure for a coke oven including bricks for a stretcher wall 4 and bricks for a binder wall 5, wherein a stretcher A brick ll that is an L-shaped brick integrally combining part of the stretcher wall 4 and part of the binder wall 5 and a stretcher B brick 12 that is a brick forming part of ...

A coating composition for a precoated metal sheet resistant to trouble due to static electricity, said coating composition comprising a combination of a base resin and a curing agent selected from (1) a combination of a high molecular weight polyester and a melamine curing agent, (2) a combination of a high molecul...

A press-forming device includes: material characteristic input means inputting at least one of the material characteristics out of sheet thickness, yield strength, 0.2% proof stress, tensile strength, elongation, n value, r value, stress-strain relation equation, hardness, temperature, surface roughness, friction co...

A chromate-free resin-composite type vibration deadening material excellent in durable bondability having a multilayer structure comprised of a viscoelastic resin composition sandwiched between metal sheets as art intermediate layer, characterized by that: (i) the viscoelastic resin composition is a thermosetting r...

This invention provides a precoated metal plate that is improved in color shading prevention and adhesion and is produced by simultaneous multilayer coating. In the precoated metal plate, the center line average roughness Ra in the coating film interface is not less than 0.3 µm, and the maximum height from the wavin...

Method for controlling the lift of a structural object where the structure is lifted-and-transported using a plurality of fluid lifting cushion devices, characterized by : lift measuring step for measuring a lift of each of the fluid lifting cushion devices; and fluid pressure correcting step for controlling ...

The present invention provides a continuous casting method of molten metal using electromagnetic force to improve the cast slab surface properties and reduce the nonmetallic inclusions and bubbles trapped inside the cast slab. An alternating current is run through an electromagnetic coil 4 arranged around a casting ...

A method of production of blast furnace coke comprising drying mixed coal, then, or simultaneously with the drying, classifying it to fine-grained coal and coarse-grained coal, then adding to the fine-grained coal at a temperature of 80 to 350°C a caking additive comprised of one or more of a heavy distillate o...

The present invention provides a high strength hot rolled steel sheet raised in Si content, wherein a conversion coating can be formed homogeneously over the entire surface of the steel sheet, no new step is added in the production of the steel sheet, and quality control is also facilitated, comprising, by mass%, C:...

A surface treated steel sheet has a surface treatment film including a metallic compound containing titanium, a metallic compound containing magnesium, a cationic urethane resin having at least one cationic functional group selected from primary to tertiary amino groups and quaternary ammonium bases, and a cationic ...

A mold device for press-forming a thin sheet, comprising a punch 1, a die 2, a blank-holding die 3, frictional force measuring means 4 mounted between the die and the blank-holding die, and hydraulic cylinders 5.

A method of separating and recovering carbon dioxide from byproduct gas etc. produced from a steelmaking plant by the chemical absorption method, characterized by utilizing or using low grade exhaust heat produced in the steelmaking plant, in a process which absorbs carbon dioxide from said gas by a chemical absorp...

A cooling method of steel plate able to raise a cooling uniformity in a steel plate conveyance direction comprising, at a front stage part of a cooling apparatus, not spraying while a front end region of steel plate is passing, spraying by successively increasing the cooling water rate from 80 to 95 vol% (Qfront) of...

A method for casting a molten steel which comprises decarburizing a raw molten steel to a carbon content of 0.01 mass % or less, subjecting the resultant molten steel to a pre-deoxidation treatment by the addition of Al, to thereby prepare a molten steel having a dissolved oxygen content of 0.01 to 0.04 mass %, and...

Provided is a steel material which may have excellent corrosion resistance in a sulfuric acid dew point corrosion circumstance by an exhaust gas originated from the burning of a high S containing fuel. A steel excellent in the resistance to sulfuric acid dew point corrosion which has a chemical composition, in...

This invention provides a high-strength hot-rolled steel sheet having strength of at least 980 N/mm2 at a sheet thickness of from about 1.0 to about 6.0 mm and excellent in hole expandability, ductility and ability of phosphate coating, which steel sheet is directed to automotive suspension components that are subje...

A molten zinc plated steel sheet superior in plating bondability and provided with both strength and shapeability is provided and a method of producing this molten zinc plating steel sheet by a continuous zinc plating production system which enables production at a low cost without modification of the system or addi...

A cooling control method which quickly controls the amounts of cooling water sprayed from top and bottom surfaces of the cooling apparatus when cooling steel plate to a predetermined cooling end temperature so as prevent shape deterioration of steel plate occurring due to the difference of cooling rates between the ...

The invention provides enameled products which are improved in the tight adhesion of steel substrate and porcelain enamel layer and are excellent in the resistance to sulfuric or hydrochloric acid dew point corrosion; and a glaze. An enameled product obtained by forming a porcelain enamel layer having a thickness of...

An induction heating apparatus for heating a traveling metal plate includes an induction coil for surrounding the metal plate. The induction coil includes an upper induction coil for being located above the metal plate and a lower induction coil for being located below the metal plate. The upper and lower inducti...

A method for cooling the opposite surfaces of a steel plate under clamp conveyance between a clamp roll pair with refrigerant jet flow from the upper/lower surface nozzle groups between the clamp roll pair in which the upper and lower surfaces of a steel plate is cooled uniformly and precisely down to a target tempe...

An induction heating apparatus for heating a traveling metal plate includes an induction coil for surrounding the metal plate. The induction coil includes an upper portion for being located above the metal plate and a lower portion for being located below the metal plate. The upper and lower portions of the inductio...

An aqueous polyurethane resin composition capable of forming a film excellent in corrosion resistance, alkali resistance, paint adhesion and lubricity on a zinciferous metal-plated steel strip comprises (a) a polyurethane resin comprising a polyester skeleton moiety and a polyether skeleton moiety and having a tensi...

A corrosion resistant surface-treated steel sheet suitable for an uncoated can accommodating an acidic food or beverage. The surface-treated steel sheet comprises: an alloy layer (1) on a surface of steel sheet (4) to be an inner wall of can (after being formed into can), wherein the alloy layer (1) contains, by ...

The present invention provides a high-strength cold-rolled steel sheet and a high-strength surface treated steel sheet 780 MPa or more in tensile strength, said steel sheets having excellent local formability and suppressed weld hardness increase and being characterized by: said steel sheets containing, in weight, C...

The present invention provides a gear, continuously-variable transmission, constant velocity joint, hub, or other steel part superior in surface fatigue strength compared with the past and method of production of the same, that is, provides a carbonitrided induction hardened steel part made of steel comprised of a s...

Production of hot dipped hot rolled steel strip by producing steel strip by casting by a thin slab continuous casting process and hot rolling, said steel strip containing, by mass%, C: 0.03% or more, Si: 0.02% or more, Mn: 0.15% or more, and Ca: 0.001% or more by heating it to a peak maximum steel strip temperature ...

A continuous annealing facility comprised of a heating zone, soaking zone, and cooling zone is used for continuous annealing of a steel strip having a Curie point (Tc) by an annealing temperature over Tc during which the heat treatment in the heating zone is divided into three regions, in a first heating zone, a rad...

The invention produces a grain-oriented electrical steel sheet having a primary recrystallization structure in which Goss-oriented crystal grains and crystal grains having a coincidence orientation relationship to the Goss orientation are aligned in the rolling direction. It is characterized heating a slab containin...

A nonoriented magnetic steel sheet excellent in stampability and with a good and stable watt loss of the stress relief annealing and a method of production of the same are provided, that is, a nonoriented magnetic steel sheet containing, by mass%, Si: 1.5% or less, Mn: 0.4% to 1.5%, Sol. Al: 0.01% to 0.04%, Ti: 0.00...

The invention provides a method of producing a grain-oriented electrical steel sheet of the complete solid solution nitrided type that is good in glass film formation and excellent in magnetic properties, which method comprises: C: 0.025 to 0.09%, hot-rolling the steel slab containing Si: 2.5 to 4.0% and acid-solubl...

To predict, on a computer, rapture of a spot welding part in a structural member for an automobile, in details, when deformed by collision, as to spot welding for the member. [ORGANIZATION]   A fracture prediction device for a spot welded portion includes: an input means inputting all or any of a material strength,...

The present invention has as its object to provide hot dip galvannealed steel sheet using an ultra-low ' carbon steel sheet excellent in corrosion resistance, workability, and coatability as a sheet material and a method of production of the same. Further, the present invention has as its object the provision of a ...

The present invention provides hot dip plated high strength steel sheet for press forming use having a tensile strength of 380 MPa to less than 540 MPa, having a press formability able to be used for the automobile field, in particular fuel tank applications, and having superior secondary work embrittlement resistan...

The present invention provides a continuous casting apparatus of a slab able to suppress disturbances in the flow of molten metal in the continuous casting use mold and produce a good quality slab with few product flaws and a continuous casting method of the same, that is, a continuous casting apparatus 10 provided ...

A hydroformed product obtained by integrally working a metal pipe material by cold plastic working, which product (x) has a bent part at least at one location, (yl) has, at least at one location of the bent part, an expanded part of dimensions of a direction toward the outer side (or inner side) of the bend in a cro...

A steel sheet for a container includes a Ni plating layer or a Fe-Ni alloy plating layer formed on a surface of the steel sheet, the Ni plating layer including Ni of 5 mg/m2150 mg/m 2, and the Fe-Ni alloy plating layer including Ni of 5 mg/m2 ~ 150 mg/m2 , Sn of 300 mg/m2 ~3000 mg/m2 being plated on the Ni plating...

An object of the present invention is to provide a grain-oriented electrical steel sheet with low core loss and low magnetostriction and a method for producing the same. The grain-oriented electrical steel sheet is excellent in reduced core loss and magnetostriction while under a high flux density of 1.9T, comprises...

The presemt invention provides a process for production of an amorphous alloy at low cost by efficiently removing magnetic-property-degrading Al and Ti when using inexpensive Fe-B or scrap as an. amorphous alloy raw material. A process for production of an Fe- based amorphous alloy ribbon comprising, by mass, 2 to ...

The present invention provides a method .of -, production of grain-oriented electrical steel sheet greatly reducing the Watt loss of the grain-oriented electrical steel sheet and making the magnetostriction as small as possible, that is, a method of production of grain-oriented electrical steel sheet with small magn...

The oxide film thickness of the steel material surface (dH2o+d02) is made to become 15 nm or less where post-treatment after water-cooling is not needed by suitably setting the conditions of the water-cooling start temperature (Ti) , water-cooling end temperature (T0), steel material thickness (d), concentration of ...

A press-forming device includes a punch and a die, as a mold to be measured, and a strain measurement means arranged within the mold and measuring a strain amount generated by press-forming. The strain measurement means is positioned at the press-direction side relative to a radius end of a die shoulder on the mater...

When discretizing an analysis target part into plural elements and performing analysis, sheet thickness reduction rate or maximum principal strain at an equivalent position including a same element is compared by either a manner of combining two adjacent elements after the analysis or a manner of changing an element...

The present invention provides oriented magnetic steel plate with excellent coating adhesion, in particular coating edge peeling resistance, that is, oriented magnetic steel plate with excellent coating adhesion containing, by mass%, Si: 1.8 to 7% and having a primary coating having forsterite as its main ingredient...

A zinc-plated steel material coated with a composite film, which is excellent in all of corrosion resistance, unsusceptibility to blackening, coating adhesion, and alkali resistance unlike plated steel materials treated by conventional chromate-substitute techniques. The zinc-plated steel material coated with a comp...

ABSTRACT - The present invention provides conveying rolls ,and_ hearth rolls in a continuous annealing furnace for ' Ll '~ producing steel sheet having flame sprayed coatings on their surfaces wherein the flame sprayed coatings are comprised of cermet having a ceramic ingredient content of 80 vol% or less or a he...

The present invention provides a surface-treated metal material having a film formed on at least a portion of a surface of a metal material, the film containing at least polyurethane resin and silicon oxide, and a metal surface treatment agent used to obtain the surface-treated metal material. 1 he polyurethane...

The propagation speed of fatigue cracks in a HAZ is restricted, and the fatique strength of an as-welded joint can be improved, by limiting an area ratio of a ferrite micro-structure in the HAZ of the welded joint to 20 to 100% and the balance to one of a bainite, a martensite, a pearlite and a residual austenite mi...

In a lubricated hot rolling method using a lubricating oil which contains one kind or two or more kinds among an high-basic alkaline-earth metal phenate, high-basic alkaline-earth metal carboxylale, high-basic alkaline-earth salicylate, or high-basic alkaline-earth metal sulfonate having a basicity of 40 mgKOH/g or ...

A method of electric tinning includes: a first step of obtaining variation in tin ion consumption scheduled rates over time from a sheet passing schedule when an amount of oxygen to be blown is adjusted to control tin ion formation rates; a second step of segmenting the tin ion formation rates per predetermined time...

An aqueous polyurethane resin composition capable of forming a film excellent in corrosion resistance, alkali resistance, paint adhesion and lubricity on a zinciferous metal-plated steel strip comprises (a) a polyurethane resin comprising a polyester skeleton moiety and a polyether skeleton moiety and having a tensi...

The invention deals with a process for manufacturing a hot-dip galvannealed steel sheet having a TRIP microstructure, and comprising, by % by weight, 0.01 ≤ C ≤ 0.22%, 0.50 ≤ Mn ≤ 2.0%, 0.5 < Si ≤ 2.0%, 0.005 ≤ Al ≤ 2.0%, Mo < 0.01%, Cr ≤ 1.0%, P < 0.02%, Ti ≤ 0.20%, V ≤ 0.40%, Ni ≤ 1.0%, Nb ≤ 0.20%, the balance of ...

The invention deals with a hot-dip galvanized or galvannealed steel sheet wherein, the composition of the steel sheet comprises, by weight: 0.01 ≤ C ≤ 0.22%, 0.50 ≤ Mn ≤ 2.0%, 0.2 ≤ Si ≤ 3.0%, 0.005 ≤ Al ≤ 2.0%, Mo < 1.0%, Cr ≤ 1,0%, P < 0.02%, Ti ≤ 0.20%, V ≤ 0.40%, Ni ≤ 1.0%, Nb ≤ 0.20%, the balance of the composi...

The present invention provides a grain-oriented electromagnetic steel sheet product having a superior corrosion resistance, annealing resistance, film tension, and the like in insulating treatment based on a phosphate not containing chromium and a treatment agent of r the same, so provides grain-oriented electrical ...

An enameling work capable of securing adhesion, blister/black speck resistance and fishscale resistance even when pretreatment or ground coating is omitted, which work is a steel sheet which contains by mass C: 0.0001 to 0.040%, Si: 0.0001 to 0.50%, Mn: 0.001 to 2.00%, P: 0.0001 to 0.10%, S: 0.0001 to 0.060%, Al: 0....

A cooling apparatus of thick-gauge steel plate having a plurality of pairs of constraining rolls, each comprising a top roll and bottom roll, constraining and conveying hot rolled thick-gauge steel plate and a plurality of spray nozzles spraying water on the top and bottom surfaces of the thick-gauge steel plate con...

Disclosed is a forging steel having excellent cool and hot forging properties. The forging steel comprises the following components (by mass): C: not less than 0.001% and less than 0.07%; Si: 3.0% or less; Mn: 0.01-4.0%; Cr: 5.0% or less; P: 0.2% or less; S: 0.35% or less; Al: 0.0001-2.0%; N: 0.03% or less; and one ...

A unidirectional magnetic steel sheet excellent in iron loss to conventional is produced by dividing the iron loss of a unidirectional magnetic steel sheet into which strain is introduced by laser beam application into the hysteresis loss and the eddy current loss and quantitatively and adequately controlling the di...

A rapidly-solidified non-oriented electrical steel sheet having high magnetic flux density and low core loss is provided. The method of producing the non-oriented electrical steel sheet excellent in magnetic properties comprises casting a steel strip by using a traveling cooling roll surface(s) to solidify a s...

A steel plate exhibiting a high Young"s modulus in the direction of rolling as determined by the static tensile method, which has a composition substantially containing by mass C: 0.005 to 0.200%, Si: 2.50% or below, Mn: 0.10 to 3.00%, N: 0.0100% or below, Nb: 0.005 to 0.100%, and Ti: 0.002 to 0.150% and satisfying ...

A method of production of an ultralow carbon cast slab characterized by adding Ti to molten steel decarburized to a carbon concentration of 0.01 mass% or less, further adding at least one of Ce, La, and Nd, and using an immersion nozzle to inject the above molten steel from a tundish to a casting mold for continuous...

A method using a continuous annealing furnace where a cooling method of a cooling zone including part or all of the temperature range of the steel sheet of 600 to 250°C following the heating for recrystallization is one or more of gas cooling, effusion cooling, and cooling pipe cooling, or a joint cold rolled steel ...

The present invention provides a new bending apparatus and bending method of a tube material which makes it possible to achieve all of bending by a large bending radius not requiring large scale equipment or die, bending resistant to wrinkling and buckling at an inner side of the bending, and bending with a high pro...

The invention provides a hot-forging micro-alloyed steel and a hot-rolled steel which achieve excellent fracture-splitability and machinability, without impairing productivity or mechanical properties and without addition of Pb or the like. It also provides a component made of hot-forged micro-alloyed steel. The ho...

The present invention provides a surface treated steel sheet for electronic components simultaneously satisfying the solder wettability, whisker-proof property, and stability of appearance with aging while not containing hazardous substances with environmental impact such as lead and chromium and a method of product...

NA

The present invention provides hot forging use non heat-treated steel where controlled cooling after shaping by hot forging is used to make the main structure of the steel martensite even without subsequent reheating and heat treatment by quenching and tempering and thereby give a steel part with a high strength and...

An induction heating apparatus for controlling the temperature distribution for heating a metal plate irrespective if it has a small thickness, is magnetic or nonmagnetic, and capable of coping with a change in the width of the plate, or meandering of the plate. The apparatus heats a metal plate 1 by induction heati...

A vehicular metal absorber for efficientialy absorbing by a short stroke the impact energy received from legs of a pedestrian at the time of a collision between a pedestrian and an automobile, reducing the residual crush, and protecting the legs of the pedestrian, that is, a long vehicular metal absorber comprising ...

The present invention provides hot rolled steel plate for spiral pipe superior in low temperature toughness, thick in gauge, for example, having a plate thickness of 14 mm or more, and having a high strength of the API-X65 standard or more spiral pipe and a method of production of the same, that is, steel plate cont...

The present invention provides high strength hot" rolled steel plate for line-pipes superior in low temperature toughness, and a method of production of the same, containing, by mass%, C: 0.01 to 0.1%, Si: 0.05 to 0.5%, Mn: 1 to 2%, P: ≤0.03%, S: ≤0.005%, 0: ≤0.003%, Al: 0.005 to 0.05%, N: 0.0015 to 0.006%, Nb: 0.00...

In a metal plate material hot molding apparatus for press molding a heated metal plate material (1), supply piping (6) for a cooling medium is provided in a mold (2, 3), and ejection holes (4) penetrating from a molding surface of the mold (2, 3) to the supply piping (6) are provided. Discharge piping (7) for the c...

High strength hot rolled steel sheet excellent in burring, elongation, and ability of phosphate coating, and having a tensile strength of at least 590 N/mm2, characterized by being a steel composition containing, by mass %, C: 0.02 to 0.08 %, Si: 0.50% or less, Mn: 0.50 to 3.50 %, P: 0.03 %or less, S: 0.01 %or less,...

The present invention provides a high strength galvannealed steel sheet, comprising high strength steel sheet containing , by niass%, C: 0.05 to 0.15%, Si: 0.3 to 2.0%, Mn: 1.0 to 2.8% P: 0.03% or less, S: 0.02% or less, Al: 0.005 to 0.5%, and N: 0.0060% or less and a balance of Fe and unavoid...

The present invention provides high burring, high strength steel sheet excellent in softening resistance oi the weld heat affected zone and a method of production oi' the same, that is, high burring, high strength steel sheet excellent in softening resistance of the weld heat affected zone containing, by wt%, C: 0.0...

The present invention provides high gauge steel sheet with excellent elongation and hole expandability having a tensile strength of 500 MPa or more and a method of production of high strength thin-gauge steel sheet with excellent elongation and hole expandability enabling production of this on an industrial scale, t...

The present invention stably provides a high-strength hot-dip galvanized steel sheet having a high tensile strength and no non-plated portions and being excellent in workability and surface properties even when the employed equipment has only a reduction annealing furnace and a steel sheet containing relatively larg...

The present invention provides ultralow carbon thin gauge steel sheet and a method for producing the same where coalescence and growth of inclusions in the molten steel are prevented and the inclusions are finely dispersed in the steel sheet, whereby surface defects and cracks at the time of press forming are preven...

At the time of casting the thin cast slab 6 by continuously supplying molten steel M of the ferritic stainless steel or the magnetic steel between a pair of cooling rolls 1, 1 arranged parallel to each other to make it solidified, a crown quantity Cw (&mu m) regulated by the formula (I) in the case of the ferritic s...

High-strength steel sheet excellent in hole-expandability and ductility, characterized by; comprising, in mass%, C: not less than 0.01 % and not more than 0.20 %, Si: not more than 1.5 %, Al: not more than 1.5 %, Mn: not less than 0.5 % and not more than 3.5 %, P: not more than 0.2 %, S: not less than 0.0005 % and n...

The present invention provides an alloyed molten zinc plated steel sheet having an area of the Fe and Zn alloy phase in the unformed parts in the plating layer of less than 10% of the area of the steel sheet as a whole and superior in strength and shapeability and a method of producing this alloyed molten zinc plati...

The present invention provides a method of cleaning steel sheet, said method of cleaning steel sheet feeding a cleaning solution activated by ultrasonic waves of a frequency of 0.8 MHz to 3 MHz to a surface of steel sheet at an angle inclined by 1 to 80° with respect to a line perpendicular to the surface of the ste...

The present invention provides a method for remoralAXQ of boron from metal silicon inexpensively and extremely efficiently by a simple method, specifically, heating metal silicon containing boron as an impurity to its melting point to 2200°C to place it in a molten state, then adding a solid mainly comprised o...

The present invention provides a hot dip galvanized composite high strength steel sheet excellent in shapeability and hole enlargement ability and a method of production of the same, that is, a hot dip galvanized composite high strength steel sheet excellent in shapeability and hole enlargement ability containi...

A steel plate superior in fatigue crack propagation resistance used for welded structural members of buildings, ships, bridges, construction machines, offshore structures, etc., containing, by wt%, C: 0.03 to 0.2%, Si: 0.01 to 1.6%, Mn: 0.5 to 2%, P: 0.02% or less, S: 0.02% or less, Al: 0.001 to 0.1%, and N: 0.001 t...

An apparatus for controlled cooling of hot steel plate while constraining and conveying the plate by constraining rolls horizontally which is inexpensive and enabling continuous control of the cooling ability over a broad range, that is, a cooling apparatus for spraying hot steel plate hot rolled and transferred bet...

A cast iron and a cast iron semi-finished product excellent in workability characterized by being comprised of cast iron of an ingredient system of white cast iron inside of which particles of spheroidal or, flattened graphite with outside surfaces partially or completely covered with ferrite are dispersed independe...

The present invention provides methods for: producing high-purity ferroboron by using inexpensive mass-produced steel as a base iron; and producing a mother alloy for an iron-base amorphous alloy and an iron-base amorphous alloy, the alloys having excellent properties, by using the ferroboron thus produced as a raw ...

A condition setting calculation device (104) compares an actual performance value of a material characteristic transmitted from a material characteristic data providing device (101) via a network (105) with a standard value, and corrects forming conditions such as a forming speed and a blank-holder pressure in accor...

An iron bath type smelting reduction furnace includes a side wall lining that is formed of a plurality of refractories, and the refractory is an MgO-C brick of which the carbon content is 1 mass% or more and less than 5 mass%.

A taphole structure of a melting furnace includes: a sleeve made of a fire-resistant brick, which is disposed inside a tapping hole provided in a furnace wall brick; and a ramming material which fills a gap between the sleeve and the tapping hole for fixing the sleeve.  In addition, a repair method of the taphole...

It was learned that in an insulation heating coil used for continuously heating a running steel sheet, the conventional insulated structure of the induction heating coil was selected focusing on the heat resistance and insulation ability of the insulation itself and cannot prevent a drop in insulation ability due to...

In a method for producing a reduced iron pellet, when a powder formed article including iron oxide and carbon is heated and reduced in a rotary hearth furnace, a formed article produced using a raw material, in which an average diameter of the iron oxide is 50 microns or less and a ratio of carbon monoxide to carbon...

NA

A shaft furnace for producing pig iron by charging an iron source of high metallization rate whose average metallization rate is 95% or greater and a solid fuel containing 70 to 100 mass% of blast furnace coke in layered state or mixed state from the furnace top onto a bed of coke filling a lower region of the furna...

An immersion nozzle that attains an enhancement of durability; and a method of continuous casting including the step of preheating the immersion nozzle. The immersion nozzle is one for use in a method of continuous casting for molten metal, characterized in that the immersion nozzle at at least its area of outer cir...

A method for controlling cooling of a steel sheet characterized by controlling the end-of-cooling temperature in a cooling process from the Ae3 or above temperature of the steel sheet, during which; preliminarily obtaining enthalpies (Hy and Ha) of an austenite phase and ferrite phase respectively at some tempera...

The present invention relates to an apparatus for cooling hot steel plate applied for controlled cooling of hot steel plate, obtained by hot rolling, while processing it constrained by constraining rolls and obtaining a steel material excellent and uniform in shape characteristics and provides a method of arranging ...

A press-forming device has a punch (2), a die (7) which relatively moves with respect to the punch (2), ai strain amount measuring means (8) which is provided inside a member to be controlled and measures a strain amount of the aforesaid ...

An aluminum type plated steel sheet which excels in discoloration resistance, and weldability, which does not decorate after re-heating and which can prevent increasing of strength, and a heat shrink band using the same are provided. The heat shrink band is made of an aluminum type plated steel sheet consisting o...

The present invention relates to a steel material giving more effective case hardening for improving the fatigue strength and is characterized by containing, by mass%, C: 0.01 to 0.3%, Si: less than 0.1%, Mn: 0.4 to 3%, Cr: 0.5 to 3%, and Al: 0.01 to 0.3%, further containing one or both of Mo: 0.2 to 1.5% and V: 0.0...

A composition plan creating apparatus creating a composition plan for mixing a plurality of kinds of composition raw materials includes a simulator (201, 202) calculating supply-demand conditions of the composition raw materials and properties after mixing, an input data obtaining unit (301), a model building unit (...

The possibility of breaking of a material is quantitatively evaluated by the comparison of the relationship between data obtained by a numerical analysis using a finite-element technique and a breaking limit stress line, using a breaking limit stress line, which has been provided by converting the hole expansion rat...

The present invention provides a Fe-B-Si system amorphous alloy thin strip excellent in high magnetic flux density, thermal stability, amorphous formability improved workability and low core loss. The present invention further provides a Fe-B-Si system amorphous alloy thin strip which has the reduced cost without us...

A cooling system that cools hot rolled long steel bar, provided with a plurality of chambers that are arranged along the longitudinal direction of the rolled steel bar. Each of the plurality of chambers is provided with a blow outlet that, facing from the chamber to the rolled steel bar, blows out compressed air f...

This cold-rolled steel sheet includes, in terms of mass %, C: not less than 0.05% and not more than 0.095%, Cr: not less than 0.15% and not more than 2.0%, B: not less than 0.0003% and not more than 0.01%, Si: not less than 0.3% and not more than 2.0%, Mn: not less than 1.7% and not more than 2.6%, Ti: not less than...

Disclosed is a steel for high-frequency hardening, which contains, in mass%, not less than 0.40% but not more than 0.75% of C, not less than 0.002% but not more than 3.0% of Si, not less than 0.20% but not more than 2.0% of Mn, not less than 0.002% but not more than 0.1% of S, more than 0.10% but 3.0% or less of Al,...

A hot forming die for a press forming apparatus press-forms a heated metal plate (work material) (4) and cools the work material by ejecting a cooling medium onto the work material. The hot forming die has a main supply path (10a) through which the cooling medium passes, a plurality of branch supply paths (10b) bran...

The present invention provides high burring, strength steel sheet excellent in softening resistance of the weld heat affected zone and a method of production of the same, that is, high burring, high strength steel sheet excellent, in scftecing resistance of the weld heat affected zone containing, by wt%, C: 0.01 to ...

A method for pretreating a sintering material Using as a material at least two types of iron ore containing coarse grains and fine powder, using a first granulator to make the fine powder stick to coarse grains forming core grains so as to produce S-type granules, and using a second granulator to granulate only fine...

A grain-oriented electrical steel sheet has a tension film that does not include chromium.  In the present invention, the tension film, including a phosphate and silica as constituents, includes a manganese compound and a potassium compound.  The mole ratio K/Mn of potassium to manganese in the film is set to a cert...

NA

A rolling method, and an apparatus therefor, capable of improving a fundamental unit of rolling rclls, dimensional accuracy and roiling stability, and having high productivity are described. The rolling method, and the apparatus therefor, reverse roll a to-be-rolled material having a dog bone-like shape and rough ro...

In a vertical furnace, a hot metal is economically produced at a low fuel ratio by using an iron-containing dust and/or iron scraps and a small particle solid fuel while keeping high combustion efficiency and avoiding so-called "shelving". In a vertical furnace into which an iron-containing dust and/or iron scraps a...

A low anisotropic Cr-Ni-based stainless steel hot-rolled sheet, which has texture with (100), (110), (111), (311) and (211) ND plane intensity from 0.5 to 1.5 in an inverse pole figure measured for a 1/4 section of the sheet thickness, and which is produced by continuously casting molten Cr-Ni-based stainless steel ...

A melt-reducing facility for directly producing molten iron or molten /iron by throwing iron bearing material, carbon and flux into furnace bodies and blowing pure oxygen and/or an oxygen-rich gas therein, wherein a waste heat boiler and a power-generating facility are connected to a plurality of furnace bodies ...

An operation support device is equipped with a display device (16) for displaying a setting screen including: a work instruction information setting field for setting work instruction information associated with a work instruction; and an applicable condition setting field provided with a menu for setting applicable...

The present invention provides a method of production of grain-oriented electrical steel sheet comprising making a slab heating temperature 1280oC or less, annealing hot rolled sheet by (a) a process of heating it to a predetermined temperature of 1000 to 1150°C to cause recrystallization, then annealing by a temper...

Reheating a grain-oriented electrical steel slab comprising predetermined components to 1280°C or more and a solid solution temperature of inhibitor substances or more, hot rolling, annealing, and cold rolling it, decarburization annealing it, nitriding it in a strip running state, coating an annealing separator, a...

A smelting reduction apparatus for producing a molten metal under a slag by charging a metal raw material, a carbon material and a flux into a furnace having a rectangular horizontal section, and blowing oxygen and/or oxygen-enriched gas into the slag through lower tuyeres provided in the furnace side walls and a me...

Grain-oriented electrical steel sheet superior in core loss characteristic containing Si: 0.8 to 7 mass% and having a secondary recrystallized texture with a {110}<001> orientation as the main orientation, characterized in that average deviation angles a, p, and y from the {110}<001> ideal orientation of the seconda...

A method for producing a grain-oriented electrical steel sheet having a B8 value satisfying the relation 1.80 < B8 (T) < 1.88, by as a starting material, a coil obtained by heating a slab formed from molten steel and hot rolling the slab or obtained by direct casting from the molten steel, the molten steel having a ...

A steel substrate has on at least one surface thereof a Ni plating layer containing 150 mg/m2 to 1,000 mg/m2 of Ni. A phosphoric acid coating of 0.1 mg/m2 to 100 mg/m2 in terms of P content and at least one of a Zr coating of 0.1 mg/m2 to 500 mg/m2 in terms of Zr content and a phenol resin coating of 0.1 mg/m2 to ...

It is an obj ect of the present invention to provide a coated steel sheet, properties of which such as tape peeling resistance, solvent resistance, alkali resistance and abrasion resistance are improved. A coated steel sheet coated with a composite coat, wherein said composite coat comprises a compounded resin (A)...

A dimension measurement system is provided. The dimension measurement system includes a speech I/O device fit in an ear canal of a worker, generating a voice signal from vibration in the air emitted from an eardrum of the worker and propagated inside the ear canal, and outputting the voice signal and an information ...

The present invention provides a steel plate cooling method, in controlled cooling of thick-gauge steel plate, which uniformly cools steel plate over its entire length and eliminates plate warping, that is, a method of conveying and cooling the top and bottom surfaces of steel plate in a high temperature state after...

The invention provides a method for producing pearlitic rail by subjecting to at least rough hot rolling and finish hot rolling a billet comprising, in mass%, C: 0.65-1.20%, Si: 0.05-2.00%, Mn: 0.05-2.00%, and a remainder of iron an unavoidable impurities, wherein the finish hot rolling is conducted by rolling at a ...

The present invention provides a metal material given a chrome-free surface treatment satisfying all of the requirements of corrosion resistance, heat resistance, fingermark resistance, conductivity, coatability, and blackening resistance at the time of working, which was difficult to achieve with conventional chrom...

A dual-purpose installation for continuous annealing and hot dip plating wherein at least a continuous annealing furnace, a coating pot, a coating device and a water quenching device are arranged in the form of a processing line along the traveling direction of a steel sheet, characterized by having a baypass device...

The present invention provides an iron-base amorphous alloy thin strip excellent in soft magnetic properties, an iron core manufactured by using said thin strip, and a mother alloy for producing a rapidly cooled and solidified thin strip. More specifically, the present invention is an iron-base amorphous alloy thin ...

A means for treating the end faces of a core which is used for an electrical apparatuses and etc., to give insulation extremely superior in effect of improvement of the insulation, corrosion resistance, adhesiveness, heat resistance, and magnetic properties at a low temperature in a short time without cleaning for r...

One aspect of the steel sheet having high Young"s modulus includes in terms of mass %, C: 0.0005 to 0.30%, Si: 2.5% or less, Mn: 2.7 to 5.0%, P: 0.15% or less, S: 0.015% or less, Mo: 0.15 to 1.5%, B: 0.0006 to 0.01%, and Al: 0.15% or less, with the remainder being Fe and unavoidable impurities, wherein one or both o...

NA

The present invention provides a rolling mill of s plate or a sheet which eliminates rolling trouble due to warping of the rolled material and wavy shaped flatness defects running through the plate or sheet width direction such as "waviness", "full waves, and "small waves" by providing a pair of a top and bottom wor...

The present invention provides an amorphous alloy ribbon superior in magnetic characteristics and lamination factor by defining the slip property of the amorphous alloy ribbon surface in a specific range, that is, an amorphous alloy ribbon superior in magnetic characteristics and lamination factor produced by the si...

See the attachment

The present invention provides a high corrosion resistance hot dip galvannealed steel material comprised of a Zn-based hot dip plated steel material achieving both a higher corrosion resistance of the plated layer itself by the added elements and sacrificial protection of iron metal by the plated layer or workabilit...

A process for producing a grain-oriented magnetic steel sheet in which slab heating is conducted at a temperature of 1,350°C or lower and the annealing of a hot-rolled sheet is conducted: (a) in a step in which the hot-rolled sheet is heated to a given temperature of 1,000-1,150°C to cause recrystallization and then...

The present invention provides a method of production of hot dip galvannealed steel sheet excellent in high strength/high ductility and the alloying degree, characterized in that a pickled hot rolled steel sheet or annealed and pickled cold rolled steel sheet containing C: 0.02 to 0.2% and Mn: 0.15 to 2.5% as main i...

This hot-dip Sn-Zn system coated steel sheet includes: a steel sheet; and a hot-dip coating layer which is formed on a surface of the steel sheet and contains 1 to 8.8 mass % of Zn and the remainder including 91.2 to 99.0 mass % of Sn and inevitable impurities, wherein a ratio of an endothermic value of melting heat...

A system for prevention of stirred up dross in continuous hot-dip plating bath of a metal sheet characterized by placing flow regulating members partially separated from each other under a sink roll at the two side wall surfaces of a hot-dip plating bath which axial ends of the sink roll face so that said members co...

This hot-rolled steel sheet contains, in terms of mass%, C: 0.015% or more to less than 0.040%; Si: less than 0.05%; Mn: 0.9% or more to 1.8% or less; P: less than 0.02%; S: less than 0.01%; Al: less than 0.1%; N: less than 0.006%; and Ti: 0.05% or more to less than 0.11%, with the remainder being Fe and inevitable ...

A stainless steel wire having a flux core for welding zinc-based alloy coated steel sheet having an outer metal sheath coating a core of flux wherein in total having in mass (%) as percentage to the total mass of the wire: C: 0.01- 0.05 %, Si: 0.1- 1.5 %, Mn: 0.5- 3.0 %, Ni: 7.0- 10.0 %, Cr: 26.0- 30.0 %, wherein an...

A roll diagnosis method for diagnosing a roll pair arranged facing each other on opposite sides of a billet passage of a continuous casting machine, the method including the steps of: measuring, a plurality of numbers of times at intervals of time, a spacing between the roll pair when a dummy bar passes through t...

In a process of producing sintered ore, part or all of iron ore fines containing combined water such as pisolite ore or Marra Mamba ore used as a sintering raw material is pre-reduced by using a reducing gas such as blast furnace gas in a reducing furnace such as a fluidized bed, whereby the combined water in the ir...

The present invention has as its object the provision of hot rolled steel sheet (hot coil) for line pipe use in which API5L-X80 standard or better high strength and low temperature toughness and ductile fracture arrest performance are achieved and a method of production of the same. For this purpose, the hot rolled...

The present invention provides a pickling method of steel sheet and pickling system of steel sheet able to efficiently remove oxide scale from steel sheet. That is, it provides a continuous pickling method of steel sheet having a step A of pickling the steel sheet in a pickling tank, a step B of blowing gas toward...

A dust fall estimating method is provided which includes: a wind direction and speed information inputting step of acquiring time-series measured values of wind direction and speed for a predetermined period of time, dividing categories of wind direction and speed into m and n sub categories, respectively, based on ...

The invention provides a pallet position identification device that can stably and accurately identify the positions of pallets in a sintering machine over a long period of time, and an air leakage detector for a sintering machine eguipped with the pallet position identification device that can stably and accurately...

A liquid phase diffusion bonded pipe joint comprised of metal pipes or a metal pipe and a joint pipe joined by liquid phase diffusion bonding, and a method of production of the same, the liquid phase diffusion bonded pipe joint comprised of a metal joint provided with a tapered slanted part press-fit into an end of ...

NA

The invention provides a carbon steel sheet including C: 0.20% to 0.45% by mass, Si: 0.05% to 0.8% by mass, Mn: 0.85% to 2.0% by mass, P: 0.001% to 0.04% by mass, S: 0.0001% to 0.006% by mass, Al: 0.01% to 0.1% by mass, Ti: 0.005% to 0.3% by mass, B: 0.0005% to 0.01% by mass and N: 0.001% to 0.01% by mass, in which ...

[Document Type] ABSTRACT OF THE DISCLOSURE A forming simulation method of an elastic-plastic material, which includes: calculating an element equivalent nodal force vector from stress tensor using a finite element method for one or a plurality of finite elements of a target configuration of the elastic-plastic mate...

A repair method of the present invention for a wall surface of a coke oven carbonization chamber at a bottom edge thereof, the repair method repairing a damaged part of the wall surface close to an oven bottom of the coke oven carbonization chamber, includes: measuring an oven bottom profile, by measuring a vertical...

The present invention provides a method of estimating a load generated when a coke is extruded from a coke oven is provided, which includes evaluating an extrusion load when coke cakes pass over a narrow furnace width portion in which a distance between furnace walls is narrowed by a projection portion that exists o...

An electrical steel sheet provides: a steel strip (1) for an electrical steel sheet; and an insulating film (2) formed at a surface of the steel strip (1) and containing metal phosphate and organic resin. At least a part of the metal phosphate includes at least one kind of crystal structure selected from a group co...

Provided is a process for simulating water quality which includes: an analysis step for analyzing the concentrations of individual compound components of waste water flowing into a biological reaction tank; a COD conversion step for converting the concentrations of the individual components analyzed above into the C...

Hot dip galvanized steel sheet excellent in shapeability and plateability comprised of high strength steel sheet containing, by mass%, C: 0.05 to 0.25%, Si: 0.3 to 2.5%, Mn: 1.5 to 2.8%, P: 0.03% or less, S: 0.02% or less, Al: 0.005 to 0.5%, N: 0.0060% or less and the balance of Fe and unavoidable impurities...

A method of charging a raw material into a sintering machine which effectively suppresses an avalanche phenomenon or undercharge phenomenon and enables stable segregation of a sintering material by granularity even when the distribution of granularity of the sintering material changes is provided. The method feeds ...

The present invention is steel for surface hardening for machine structural use which contains, by mass%, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and 0: 0.0001 to 0.0050%, ...

The invention provides a wire rod with a composition at least including: C: 0.90-1.30 mass%; Si: 0.1-1.2 mass%; Mn: 0.1-1.0 mass%; Al: more than 0.1% mass% and less than 0.6 mass%; P: 0-0.02 mass%; S: 0-0.02 mass%; N: 10-60 ppm; O: 10-40 ppm; and the balance including Fe and inevitable impurities, wherein 97% or mor...

The present invention provides a fuel for sintering iron ore which is less expensive than the conventionally used sintering use fuel and excellent in combustion efficiency and which enables improvement of the productivity and product yield of the sintered ore and reduction of the amount of exhaust of nitrogen oxides...

Provided is a coated steel sheet which is improved in properties such as the adhesion of a coating to a base material, the resistance of the coating to a press oil, etc. The coated steel sheet coated with a composite coating and is characterized in that the composite coating comprises(A) particles of an ethylene-uns...

Disclosed is a hot-worked steel material having excellent machinability and an excellent impact value. Specifically disclosed is a hot-worked steel material which comprises the following components (by mass): C: 0.06-0.85%; Si: 0.01-1.5%; Mn: 0.05-2.0%; P: 0.005-0.2%; S: 0.001-0.35%; Al: 0.06-1.0%; and N: 0.016% or ...

Production of a high-strength electromagnetic steel sheet with a tensile strength as high as 500 MPa or greater, exhibiting not only wear resistance but also magnetic characteristics excelling in magnetic flux density and iron loss. There is provided a process for producing a high-strength electromagnetic steel shee...

The invention provides a boron steel sheet including C: 0.20% by mass to 0.45% by mass, Si: 0.05% by mass to 0.8% by mass, Mn: 0.5% by mass to 2.0% by mass, P: 0.001% by mass to 0.04% by mass, S: 0.0001% by mass to 0.006% by mass, A1: 0.005% by mass to 0.10% by mass, Ti: 0.005% by mass to 0.20% by mass, B: 0.0010% b...

The present invention provides a carbonaceous refractory, and a method of production of the same, which prevents a drop in the molten pig iron corrosion resistance, molten pig iron penetration resistance, and other properties of carbonaceous refractories required for blast furnace bottom refractories and, further, r...

A surface temperature of a slab is decreased down to 600 °C or lower between start of continuous casting (step S2) and start of slab reheating (step S3). The surface temperature of the slab is held at 150 °C or higher between the start of the continuous casting (step s2) and the start of the slab reheating (step S3...

A steel plate having a high gathering degree of {222} plane which has an Al content of less than 6.5% by mass, characterized in that: (1) the gathering degree of the {222} plane of aFe phase and/or ?Fe phase to the surface of the steel plate is 60 to 99% and/or (2) the gathering degree of the {200} plane of aFe phas...

A producing method of a grain-oriented electrical steel sheet includes forming a preferentially-deformable portion at an end region of a steel sheet so as to be parallel with the rolling direction of the steel sheet; coiling the steel sheet; and performing a final annealing to the steel sheet after disposing the ste...

A silicon steel material is heated in a predetermined temperature range depending on contents of Al, N, Mn, S, and Se (step S1) and a cumulative reduction and the final temperature of rough rolling and the final temperature of finish rolling are set to fall within predetermined ranges and hot rolling is performed (s...

Provided is a precoated metal plate that can maintain photocatalytic contamination resistance and self-cleaning functionality over a long period of time. A surface-treatment liquid and a method for suitably manufacturing the precoated metal plate are also provided. The precoated metal plate has two or more photocata...

This high-carbon pearlitic steel rail having excellent ductility, includes: in terms of percent by mass, C: more than 0.85% to 1.40%; Si: 0.10% to 2.00%; Mn: 0.10% to 2.00%; Ti: 0.001% to 0.01%; V: 0.005% to 0.20%; and N: less than 0.0040%, with the balance being Fe and inevitable impurities, wherein contents of Ti ...

The present invention provides a very thin steel sheet and production method thereof that, in a very thin steel sheet of 0.4 mm or less thickness, enable production at low addition of special elements, simultaneous achievement of both good workability and anti-aging property, and stable passing of even wide coil in ...

Provided is a process for producing a multilayer-coated metal sheet having no coating defects and having high adhesion. The process for producing a multilayer-coated metal sheet comprises the step of simultaneous multilayer coating in which an upper-layer coating material and an underlayer coating material each in a...

A predetermined portion of a plated steel sheet (K) is rapidly cooled to a Martensite-transformation starting temperature (Ms point) or less by a partial rapid cooling stage (11), the rapidly cooled portion of the plated steel sheet (K) is recuperated to a temperature higher than the Martensite-transformation starti...