0001]The present disclosure, hot-press-plated steel sheet, a method of manufacturing a hot press-plated steel sheet, a method of manufacturing hot press molded product, and a method of manufacturing a vehicle.
BACKGROUND
[0002]Recently, for the prevention of environmental protection and global warming, there is an increasing inhibit demand consumption of chemical fuels, this demand has affected to various manufacturing industries. For example, rather than the exception for the automobile that are essential to the day-to-day life and activities as a means of transportation, such as improvement of fuel consumption due to the weight of the vehicle body is being sought. However, it is not allowed on the product quality simply reduce the weight of the vehicle body in the automotive, it is necessary to ensure proper safety.
[0003]
　Many structures of an automobile, iron, is formed in particular steel, to reduce the weight of the steel sheet, it is important for reducing vehicle weight. However, it is not allowed to reduce the weight of the street simply steel described above, is also required to ensure the mechanical strength of the steel sheet. Such demand for steel plate, not automobile manufacturing industry alone, are similarly made in various manufacturing industries. Therefore, by increasing the mechanical strength of the steel sheet, the previously used even thinner than steel was capable of enhancing maintain or mechanical strength steel sheet, research and development have been conducted.
[0004]
　Materials generally have a high mechanical strength, in molding the bending or the like, tend to shape fixability is lowered, the case of processing into complex shapes, processing itself becomes difficult. As a means for solving the problems of the moldability, so-called "hot press method (hot pressing method, hot pressing method, die quenching method)" and the like. In the hot pressing process, the material is a molded object once heated to a high temperature, after molding by performing press working with respect to the softened material by heating and cooling.
[0005]
　According to this hot pressing process, since the once softened by heating to a high temperature material can be easily press working the material. Thus, this hot pressing, good shape fixability and high mechanical strength and both the molded article is obtained. Particularly when the material is of steel, the quenching effect due to cooling after molding, it is possible to increase the mechanical strength of the press-molded product.
[0006]
　However, when applying this hot pressing process in steel plate, for example by heating to a high temperature of 800 ° C. or higher, iron, etc. is oxidized scale (oxide) on the surface occurs. Therefore, after the hot pressing, the step of removing the scale (descaling process) is required, the productivity is lowered. Further, the member or the like which require corrosion resistance, it is necessary to the anticorrosive treatment and metallization to the member surface after machining, the surface cleaning step, the surface treatment step is required, also the productivity is lowered.
[0007]
　Examples of such productivity method for inhibiting the degradation of, and a method of applying a coating to the steel sheet. As is generally coated on the steel plate, various materials such as organic materials and inorganic materials are used. Of these zinc-plated steel sheet with a sacrificial corrosion protection action on the steel sheet, in view of the corrosion protection and the steel sheet production technology, widely used in the automobile steel sheets. The heating temperature in the hot pressing is aimed at a temperature higher than Ac3 transformation point of the steel to obtain a quenching effect. That is, the heating temperature is about 700 ~ 1000 ° C.. However, the heating temperature is higher than such boiling point of a metal material such as decomposition temperature or Zn-based organic material. When heated for this for hot pressing, there is a case where the plating layer on the surface is evaporated, causing significant degradation of the surface properties.
[0008]
　Thus, for the steel plate to perform hot pressing is heated to a high temperature use, for example, steel sheet metal coating having a boiling point of higher Al system than metal-coated organic material coated or Zn system, a so-called aluminum-plated steel sheet it is preferable to.
[0009]
　By applying a metal coating of the Al-based, it is possible to prevent the scale from adhering to the surface of the steel sheet, thereby improving the productivity because the process is not necessary, such as descaling process. Further, the metallization of the Al-based also improved corrosion resistance after painting because some corrosion protection. A method using an aluminum-plated steel sheet which has been subjected to metal coating of the Al-based steel having a predetermined steel composition to hot pressing is described in Patent Document 1.
[0010]
　However, when applying a metal coating of the Al-based, depending on the conditions of the previous pre-heating of the pressing in the hot pressing method, Al coating first melts, Al-Fe compound layer caused by Fe diffusion from subsequent steel . Its Al-Fe compound layer grows it may become Al-Fe compound layer to the surface of the steel sheet. Hereinafter the compound layer is referred to as the alloy layer. This alloy layer, since it is extremely hard, processing scratches are formed by contact with the mold during press working.
[0011]
　In contrast, Patent Document 2, the hot lubricity to prevent generation of processing flaws, for the purpose of improving the chemical conversion treatability and corrosion resistance, coating the aluminized steel sheet wurtzite type compound such as coating of ZnO a method of forming on the surface have been disclosed.
[0012]
　On the other hand, Patent Document 3, for the purpose of increasing the adhesion of the coating of ZnO during press molding, the hydroxide Zn, phosphate Zn, and one or more Zn compound selected from the group consisting of organic acids Zn a method of forming a film on the surface of the Al-plated steel sheet is disclosed. The method of Patent Document 2, an aluminum-plated steel sheet film of Zn compound is formed by the heat at the time of hot press forming, to produce a film of ZnO, forming a film of excellent ZnO adhesion, hot lubricity, it is possible to improve film adhesion, spot weldability, and corrosion resistance after painting.
[0013]
Patent Document 1: Japanese Patent 2000-38640 JP
Patent Document 2: WO 2009/131233 Patent
Patent Document 3: Japanese Patent 2014-139350 JP
Summary of the Invention
Problems that the Invention is to Solve
[0014]
　Here, plated steel sheets in Patent Documents 2 and 3, both excellent hot lubricity, it is possible to suppress the occurrence of processing defects. However, generally when the hot press-forming using a non-plated material or plated steel sheet part or the like comprising a vertical wall portion and the flange portion of the press-sliding hot press die-plated steel sheet slides wear occurs on the surface. Therefore, in the high surface pressure portion of the hot press forming as a wear corresponds occurring on the sliding surface of the mold, it is necessary to mold care. Although the mold wear is reduced by the plated steel sheet in Patent Documents 2 and 3 are expected, it failed to resolve similarly die wear and other non-plated or plated steel sheet even with Patent Documents 2 and 3 It was.
[0015]
　Accordingly, one aspect of the object of the present disclosure is to provide hot-press-plated steel sheet to suppress the occurrence of wear of the sliding surfaces of the hot press mold, and a manufacturing method thereof.
　Another embodiment of the subject of other of the present disclosure, a method for manufacturing the hot-using press-plated steel sheet, suppresses the occurrence of wear of the sliding surfaces of the hot press mold hot press molded product, and to provide a manufacturing method for a vehicle using a press-molded product produced by the method for producing a hot press molded product.
Means for Solving the Problems
[0016]
　The inventors have studied, the following was found. When forming a zinc oxide film layer on the surface of the aluminum plating layer (ZnO film), the surface properties of the aluminum plating layer having convex portions on the surface is reflected on the surface properties of the zinc oxide film. When aluminized steel sheet zinc oxide film layer formed on the surface and a hot press die surface is slid, I'll take the local pressure on the convex portion of the zinc oxide film, gold for hot pressing generating an abrasion on the sliding surface of the mold. The inventors have found that if form higher zinc oxide film smoothness is found that the occurrence of hot press die sliding surface wear can be suppressed.
[0017]
　Subject matter of the present disclosure are as follows.
[0018]
<1>
　and the steel plate, and plated steel body having a single-sided or aluminized layer provided on both surfaces of the steel sheet,
　provided on the surface of the aluminum plating layer side of the coated steel sheet body, the adhesion amount of attachment is Zn in an amount in terms of 7.1 ~ 19.8 g / m 2 and zinc-based metal soap coating,
　hot-press coated steel sheet having.
<2>
　steel plate and the aluminum plating layer provided on one surface or both surfaces of the steel sheet, and plated steel body having a zinc oxide coating disposed on a surface of the aluminum plating layer,
　the oxide of the plated steel sheet body a zinc-based metal soap coating disposed on the surface of the zinc coating,
　comprising a
　deposition amount of attachment of the sum of said zinc oxide coating the zinc-based metal soap coating, Zn amount converted at from 7.1 to 19 .8G / m 2 hot-press-plated steel sheet is.
<3>
　heat according to the of the total adhesion amount of attachment of the zinc oxide film and the zinc-based metal soap film, more than half is adhered amount of attachment of the zinc-based metal soap film <2> during press-plated steel sheet.
<4>
　The zinc-based metal soap coating, Bisuokutan zinc, zinc octoate, a coating of at least one zinc-based metal soap is selected zinc laurate, and from the group consisting of zinc stearate <1> to < hot-press coated steel sheet according to any one of 3>.
<5>
　and the steel plate, and plated steel body having a single-sided or aluminized layer provided on both surfaces of the steel sheet,
　a zinc oxide coating disposed on the surface of the aluminum plating layer side of the coated steel sheet body
　have a and,
　hot-press-plated steel maximum value of skewness Rsk is less than 0 in the roughness curve of the surface of the zinc oxide film.
<6>
　steel plate and, on the aluminized layer side on the surface of the plated steel sheet body having an aluminum plating layer provided on one surface or both surfaces of the steel sheet, 7.1 to adhesion amount of adhering portions of Zn amount conversion 19.8 g / m 2 method for producing a hot-press coated steel sheet comprising a step of forming a zinc-based metal soap coating so that.
<7>
　and the steel plate, and one side or aluminized layer provided on both surfaces of the steel sheet, on the surface of the zinc oxide film of the plated steel sheet body having a zinc oxide film provided on the aluminum plating layer, wherein the total amount of adhesion of the deposited portion is 7.1 ~ 19.8 g / m with Zn amount in terms of the adhesion amount of attachment of the zinc oxide film 2 between heat of forming a zinc-based metal soap film to be method of manufacturing a press-plated steel sheet.
<8>
　In the step of forming the zinc-based metal soap coating of adhesion amount of attachment of the sum of the zinc oxide film and the zinc oxide film, deposited over half of the attachment portion of the zinc-based metal soap coating method for manufacturing a hot-press coated steel sheet according to the quantity <7>.
<9>
　Wherein the zinc-based metal soap coating was heated at 300 ° C. or higher, a manufacturing method of hot-press-plated steel sheet according to any one of <6> to <8>, comprising the step of the zinc oxide film.
<10>
　manufacturing method of hot-press coated steel sheet according to the maximum value is less than 0 <9> of the skewness Rsk of the roughness curve of the surface of the zinc oxide film formed by heating said zinc-based metal soap coating .
<11>
　are the zinc-based metal soap coating, Bisuokutan zinc, zinc octylate, zinc laurate, and coating of at least one zinc-based metal soap is selected from the group consisting of zinc stearate <6> - < method for manufacturing a hot-press coated steel sheet according to any one of 10>.
<12> <6>
　to a process for manufacturing a hot-press coated steel sheet by the method for producing a hot-press coated steel sheet according to any one of <11>, forming the zinc-based metal soap coating in the step of, among the surfaces of the aluminum plating layer side of the coated steel sheet body, in the hot pressing process on a surface in contact with the hot press die sliding surface of the post, at least the zinc-based metal soap coating process and, for producing a plated steel sheet for hot press to form
　a hot pressing step of hot press forming the hot-press coated steel sheet
　manufacturing method of the hot press-formed product having a.
<13> <10>
　hot hot manufacturing method of a press molded article of the manufactured hot-press-plated steel sheet for hot press forming by the method for producing a press-plated steel sheet according to.
<14>
　<12> or <13> a press-molded article produced by the production method of the hot press molded article according to manufacturing method for a vehicle for mounting a surface with a zinc oxide film toward the outside of the vehicle.
Effect of the invention
[0019]
　According to one aspect of the present disclosure, it is possible to provide hot-press-plated steel sheet to suppress the occurrence of wear of the sliding surfaces of the hot press mold, and a manufacturing method thereof.
　According to an aspect of the present disclosure, a method for manufacturing the hot-using press-plated steel sheet, hot press die of the sliding surface scratches suppressing hot press molded product occurs, and, it is possible to provide a manufacturing method for a vehicle using a press-molded product produced by the method for producing a hot press molded product.
BRIEF DESCRIPTION OF THE DRAWINGS
[0020]
[FIG. 1A] is a schematic sectional view showing an example of a hot-press coated steel sheet according to the present embodiment.
[FIG 1B] is a schematic sectional view showing a state in which the hot-plated steel sheet and the die for pressing to contact according to the present embodiment.
[FIG 2A] is a schematic sectional view showing an example of a conventional hot-press-plated steel sheet.
Is a schematic sectional view showing the FIG. 2B] how conventional and hot-press-plated steel sheet and the die are in contact.
3 is a process drawing showing an example of a conventional process from manufacture of the plated steel sheet to hot press forming.
4 is a schematic diagram showing a hot lubricity evaluation device.
DESCRIPTION OF THE INVENTION
[0021]
　Will now be described in detail in embodiments wherein an example of the present disclosure.
　Reference will now be described in detail preferred embodiments of the present disclosure.
　In the specification and drawings, components having substantially the same function and structure, may be omitted redundant description by referring to the figures.
　Further, the numerical range expressed using "to" means a range including numerical values described before and after "to" as the lower and upper limits.
　Also, the term "process" not only separate steps, even if that can not be clearly distinguished from other processes intended purpose of the process if it is achieved, are included in this term.
[0022]
　
　described plated steel sheet according to an embodiment of the present disclosure.
　For hot pressing plated steel sheet according to the present embodiment (hereinafter referred to as "coated steel sheet") includes a steel plate, one side or aluminized layer provided on both surfaces of the steel sheet (hereinafter referred to as "Al plating layer") a plated steel body having, plated steel sheet provided on the surface of the Al coating layer side of the body, 7.1 ~ 19.8 g / m deposition amount of attachment is at Zn amount conversion 2 and zinc-based metal soap coating, the a.
　In plated steel sheet according to the present embodiment, plated steel body, zinc oxide film provided on the Al plating layer (hereinafter referred to as "ZnO film") may have. However, if the plated steel sheet body has a ZnO film, the adhesion amount of attachment of the sum of ZnO film and a zinc-based metal soap coating, 7.1 ~ 19.8 g / m with Zn amount conversion 2 to.
[0023]
　Plated steel sheet according to the present embodiment, the above configuration suppresses occurrence of the sliding surface of the wear of the hot press molded when hot press mold (hereinafter referred to as "mold"). The plated steel sheet according to the present embodiment has been found by the finding described below.
[0024]
　First, analysis of the press-molded article and a mold coated steel sheet of Patent Document 2 (plated steel sheet ZnO film formed on the Al plating layer) was hot press molding, the following items were confirmed. ZnO film is coated steel sheet of Patent Document 2 had a protrusion along the surface properties of the Al coating layer (see FIG. 2A: in Figure 2A, 12 is the steel plate, 14 Al plating layer, 16 a ZnO film show.). When the plated steel sheet was hot press-forming, it'll take the local surface pressure on the convex portion of the ZnO film from the sliding surface of the mold and sliding, the top portion of the convex portion of the ZnO film is peeled off, Al plating layer was exposed. Further, the mold due material was adhered to the vicinity of the exposed Al plating layer. Therefore, Al of the exposed Al plating layer reacts with Fe mold to produce an intermetallic compound, it was found that the abrading at the sliding surface of the mold.
　In other words, the next it was found. 1) coated steel sheet of Patent Document 2, since the thin ZnO film is formed on the Al plating layer, the maximum value of the skewness Rsk of the roughness curve of the surface is greater than 0, the convex portion protruding surface is formed to have it. 2) protrusion that protrudes on the surface that contacts the mold and the point. 3) When the pressing pressure of the hot press forming is high, a high surface pressure is generated in the convex portion of the surface, thereby wear the sliding surfaces of the mold (see FIG. 2B: in FIG. 2B, 12 are steel plates, 14 Al plating layer, 16 ZnO film, 26 denotes a mold.).
[0025]
　Therefore, it, in order to suppress the wear of the sliding surfaces of the mold was found to be effective following. 1) To increase the smoothness of the ZnO film, applying a lubricant. 2) chemical conversion treatability after hot press forming, and considering corrosion resistance, the use of zinc-based metal soap containing Zn as a lubricant. It has specifically found the following.
[0026]
　Zinc-based metal soap, to be used in a lubricant application, allowing a larger amount of adhered surface texture hardly affected by plated steel sheet body of the base (Al plating layer or ZnO film), highly smooth zinc metal soap coating becomes possible to form (Figure 1A see 10 plated steel sheet in Figure 1A, 10A are plated steel body, 12 denotes a steel sheet, 14 Al plating layer, 16 ZnO film, 18 a zinc-based metallic soap coating .). The zinc-based metal soap coating, the heating before pressing hot press forming, the zinc is oxidized, as a result of organic matter other than zinc (fatty acids) was decomposed, the ZnO film. That is, when the press of the hot press forming becomes surface smoothness is high ZnO film of the plated steel sheet (for example, ZnO film of maximum is less than 0 the skewness Rsk of the roughness curve of the surface) and state is formed. Note that before hot press forming was heated to zinc-based metal soap coating may be ZnO film.
[0027]
　Because ZnO film on the outermost surface of the plated steel sheet is smooth, when the plated steel sheet to hot press forming, the surface pressure applied from the sliding surface of the mold and sliding the ZnO film is reduced. That is, the sliding surface of the ZnO film and the mold of the plated steel sheet is in surface contact, real contact area between the ZnO film and the mold sliding surface of the plated steel sheet is increased, the contact surface pressure is reduced. Therefore, peeling of the ZnO film is suppressed (see FIG. 1B: 10 is plated steel sheet in FIG. 1B, 10A are plated steel body, 12 is a steel sheet, 14 Al plating layer, 16 ZnO film, 18A zinc-based metal ZnO film formed from the soap film, 26 denotes a mold.). Since the separation of the ZnO film is suppressed it can be suppressed in response to contact between the mold and the Al plating layer to produce an intermetallic compound. As a result, the generation of the metal pipe compound causing wear of the mold is suppressed, wear of the sliding surface of a mold-plated steel slides are suppressed.
[0028]
　With the above findings, the inventors plated steel sheet according to the present embodiment, the above-described configuration were found to suppress the occurrence of hot press die of the sliding surface of the wear when hot press forming .
　Then, the inventors have also found the following things. Plated steel sheet according to the present embodiment hardly ZnO film formed from a zinc-based metal soap film is peeled off after during hot press forming and molding, and hardly occurs mold wear. Therefore, at high productivity, with a high chemical conversion treatability, excellent adhesion to Al plating layer and the ZnO film after molding, high corrosion resistance (i.e., corrosion resistance after painting) molded article is obtained having.
[0029]
　The following is a detailed description of the plated steel sheet according to the present embodiment.
[0030]

　plated steel body has steel plate and, the Al plating layer provided on one or both sides of the steel sheet. The plated steel sheet body may have a ZnO film provided on the Al plating layer.
[0031]
　(Steel sheet)
　The steel sheet (steel sheet before plating), for example, high mechanical strength (e.g., tensile strength, Fushimi point, elongation, diaphragm, hardness, impact value, fatigue strength, mechanical, such as creep strength it is preferable to use the formed steel plate to have to.) refers to properties about Do deformation and fracture. An example of a steel plate (steel sheet before plating) to achieve a high mechanical strength for use in coated steel sheet according to the present embodiment is as follows. Incidentally,% notation, especially if otherwise stated means mass%.
[0032]
　Steel sheet, by mass%, C: 0.1 ~ 0.6%, Si: 0.01 ~ 0.6%, Mn: 0.5 ~ 3%, Ti: 0.01 ~ 0.1%, and , B: 0.0001 ~ contain at least one or more of 0.1%, and it is preferable that the balance Fe and impurities.
[0033]
　C is to be contained in order to ensure the mechanical strength of interest. C is in the case of less than 0.1% is not sufficient improvement in mechanical strength can be obtained, the effect of containing C becomes poor. On the other hand, if C exceeds 0.6%, although it is possible to further cure the steel plate, melting cracking it is likely to occur. Therefore, C content is preferably set to 0.6% or less than 0.1%.
[0034]
　Si is one of the strength improving elements to improve mechanical strength, to be contained in order to ensure the mechanical strength of interest similarly to the C. Si is the case of less than 0.01%, hardly exhibits the strength improving effect is not sufficient improvement in mechanical strength can be obtained. Meanwhile, Si is also an easily oxidizable elements. Therefore, if the Si is more than 0.6%, when performing molten aluminum plating, decreased wettability, there is a risk that non-plating occurs. Therefore, Si content is preferably set to 0.6% or less than 0.01%.
[0035]
　Mn is one of the strengthening element to strengthen the steel, is also one of the elements to improve the hardenability. Furthermore Mn may also be effective in preventing hot embrittlement due to S which is one of the impurities. If Mn is less than 0.5%, these effects can not be obtained, the effect is exhibited by 0.5% or more. On the other hand, if the Mn exceeds 3%, there is a possibility that the strength too much residual γ phase is reduced. Therefore, Mn content is preferably 3% or less than 0.5%.
[0036]
　Ti is one of the reinforcement elements is also an element improving the heat resistance of the Al plating layer. When Ti is less than 0.01% is not obtained, the strength improving effect and oxidation resistance improving effect, these effects are exhibited at least 0.01%. Meanwhile, Ti is too much contained, for example, by forming a carbide or nitride, it is a steel may be softened. Particularly, when the Ti is more than 0.1% is likely to not be obtained the mechanical strength of interest. Therefore, Ti content is preferably 0.1% or less than 0.01%.
[0037]
　B has the effect of improving the strength by acting upon quenching. If B is less than 0.0001%, the lower such strength improving effect. On the other hand, if B exceeds 0.1%, the embrittlement to form inclusions, which may lower the fatigue strength. Therefore, B content is preferably 0.1% or less than 0.0001%.
[0038]
　In this steel sheet, it may contain impurities which cause mixed with such other manufacturing processes.
[0039]
　Such steel sheets are formed by chemical components, are hardened by heating due to the hot press method, it is possible to have a mechanical strength of at least about 1500 MPa. This way it is a steel sheet having a high mechanical strength, be processed by hot pressing method, it is possible to perform hot pressing in a state softened by heating, it can be easily molded. Further, the steel sheet has a high mechanical strength can realize, can be thus also maintaining or improving the mechanical strength as the thin to reduce weight.
[0040]
(Al plating layer)
　Al plating layer is formed on one surface or both surfaces of the steel sheet before plating. Al plating layer, for example, are formed on one surface or both surfaces of the steel sheet by hot dipping, forming method is not limited thereto.
[0041]
　Composition of the Al plating layer, the Al may only contain 50% or more. Elements other than Al is not particularly limited, it may be actively contain a Si for the following reasons.
[0042]
　The inclusion of Si, Al-Fe-Si alloy layer is formed at the interface of the plating and base steel, it is possible to suppress the formation of brittle Al-Fe alloy layer generated during hot dipping. If Si is less than 3%, thicker growth Al-Fe alloy layer at the stage of applying the aluminum plating, and promote plating layer cracking during processing, it may adversely affect the corrosion resistance. On the other hand, Si is when more than 15%, there is a possibility that the volume of the layer containing Si conversely decreases the workability and corrosion resistance increased plating layer. Accordingly, Si content of the Al plating layer is preferably 3 to 15%.
[0043]
　Al plating layer prevents corrosion of the steel plate. Also, Al plating layer, when processed by the method hot pressing is a plated steel sheet, be heated to a high temperature, the surface is oxidized scale (iron oxides) is not generated. By preventing scale formation in the Al coating layer, the step of removing the scale, the surface cleaning step, can be omitted and surface treatment process, thereby improving the productivity of the molded article. Also, Al plating layer, the plating layer and other metallic materials with an organic material (e.g., Zn-based materials) high boiling point and melting point than the plating layer due. Therefore, when molding by hot press forming, since the plating layer is never evaporate, it is possible to hot press forming at a high temperature. Therefore, further enhance the formability in hot press forming, it becomes possible to easily molded.
[0044]
　By heating at the time of hot dipping and hot pressed, Al plating layer may be Fe alloyed in the steel sheet. Therefore, Al-plated layer is not necessarily limited to component composition is formed by the constant single layer becomes partially intended to include alloyed layer (alloy layer).
[0045]
(ZnO
　film) ZnO film (film containing ZnO) is optionally formed on the surface of the Al plating layer of the plated steel sheet body. In particular, in the case of forming a zinc-based metal soap coating on a part of the surface of the Al coating layer side of the coated steel sheet body, ZnO film is preferably formed on the entire surface of the Al plating layer of the plated steel sheet body. In the region where the ZnO film is the outermost surface layer of the plated steel sheet, this ZnO film, the plated steel sheet, hot lubricity, chemical conversion treatability, corrosion resistance is imparted.
[0046]
　Method of forming a ZnO film is not particularly limited, for example, can be formed on the Al plating layer by the method described in Patent Documents 1 and 2.
[0047]
　Adhesion amount of attachment of the ZnO film (hereinafter, simply referred to as "adhesion amount") is per side of the steel sheet, 0.5 ~ 7 g / m with Zn amount conversion 2 is preferably set to. Deposition amount of ZnO coating 0.5 g / m with Zn amount conversion 2 is greater than or equal, in the area in contact with the other sliding surface of the mold in the hot press forming may be effectively exhibited lubricity improving effect it can. On the other hand, the adhesion amount of ZnO coating 7 g / m with Zn amount conversion 2 when exceeding the too thick thickness of the Al plating layer and ZnO film, weldability, paint adhesion may deteriorate.
　Deposition of ZnO coating, per side of the steel sheet, 1 ~ 4g / m in Zn amount conversion 2 particularly preferably about lubrication during hot pressing in the region in contact with the other sliding surface of the mold in the hot press forming sexual also be secured, it becomes further favorable weldability and coating adhesion.
　In this connection, the measurement method of the adhesion amount of ZnO coating, utilizing fluorescent X-ray method. Specifically, the fluorescent X-ray method, the adhesion amount of ZnO coating (Zn content equivalent) using several standard sample is known to prepare a calibration curve, the Zn strength of the sample to be measured of the ZnO film in terms of adhesion amount, determine the coating weight of the ZnO film.
[0048]

　zinc-based metallic soap coating (film containing a zinc-based metal soap) are provided on the surface of the Al coating layer side of the coated steel sheet body. Specifically, if the ZnO film on the Al plating layer of the plated steel sheet body is not provided, a zinc-based metal soap coating is provided on the surface (entire surface) of the Al plating layer. On the other hand, if the ZnO film is provided on the Al plating layer of the plated steel sheet body, zinc-based metal soap coating is provided on at least a portion of the surface of the ZnO film.
[0049]
　Metallic soap of zinc-based metal soap coating, a fatty acid (e.g., having 7 to 20 carbon atoms or less of a fatty acid) and zinc metal salts (fatty acid zinc salts). Fatty acids are saturated fatty acids, unsaturated fatty acids
may be either.
　In particular, from the viewpoint of forming a high zinc-based metal soap coating smoothness, metallic soap of zinc-based metal soap coating is preferably a liquid metal soap at room temperature (25 ° C.).
　Specific examples zinc-based metal soap film, for example, Bisuokutan zinc, zinc octylate, zinc laurate, and the coating of at least one zinc-based metal soap is selected from the group consisting of zinc stearate and the like suitably .
[0050]
　Zinc-based metal soap coating, to form with a zinc-based metal soap lubricant applications, a highly smooth coating. On the other hand, zinc-based metal soap coating, for example, by more than 300 ° C. heating (hot press forming press prior to the heating, or hot press-forming before the pre-heating), the zinc is oxidized, other than zinc organic (fatty acids) is decomposed, the ZnO film. In other words, the region where the zinc-based metal soap coating of the plated steel sheet body is provided, by heating, the regions coated with ZnO film from zinc-based metal soap coating.
[0051]
　By heating the smoothness of a high zinc-based metal soap coating, it is possible to form (ZnO film satisfying the maximum value Rsk <0 the skewness Rsk of the roughness curve of the example surface) highly smooth ZnO film . This smoothness high ZnO film, when the plated steel sheet to hot press forming, the wear of the sliding surface of a mold-plated steel slides are suppressed.
[0052]
　Here, if the plated steel sheet body does not have a ZnO film (i.e., the case of forming a zinc-based metal soap film on the surface of the Al plating layer of the plated steel sheet body), the adhesion amount of attachment of the zinc-based metal soap coating, It is too little or too much, affected by the surface properties of the plated steel sheet body of the base (Al plating layer), with the smoothness of the zinc-based metal soap film, a ZnO film to be formed from a zinc-based metal soap coating smoothness is lowered. Accordingly, the adhesion amount of attachment of the zinc-based metallic soap coating (hereinafter, simply referred to as "adhesion amount") is, 7.1 ~ 19.8 g / m with Zn amount conversion 2 and, preferably 8.82 1-16. 3G / M 2 a. Further, the adhesion amount is in Zn amount conversion, 8.9 ~ 19.8 g / m 2 , 9.2 ~ 19.8 g / m 2 , or 9.5 ~ 19.8 g / m 2 at any range it may be.
[0053]
　On the other hand, (the case of forming a zinc-based metal soap film on the surface of the words, ZnO film of the plated steel sheet body) plated steel sheet body may have a ZnO film, the adhesion amount of the zinc-based metal soap coating, the coated steel sheet body of the base in both the ZnO film to be formed from ZnO film and a zinc-based metal soap coating, the surface of the ZnO film it is necessary to consider so that smooth. Accordingly, the plated steel sheet deposition amount of the total zinc-based metal soap coating the coating weight of the ZnO film of the body (total adhesion amount of ZnO film and a zinc-based metal soap coating of the plated steel sheet body) is 7 Zn amount conversion. 1 ~ 19.8 g / m 2 and, preferably 8.82 ~ 16.3 g / m 2 and. Further, the adhesion amount is in Zn amount conversion, 8.9 ~ 16.3 g / m 2 , 9.2 ~ 16.3 g / m 2 , or 9.5 ~ 16.3 g / m 2 at any range it may be.
[0054]
　If plated steel body has a ZnO film (i.e., the case of forming a surface on zinc-based metal soap coating ZnO film of the plated steel sheet body), enhancing the surface smoothness of the ZnO film formed from a zinc-based metal soap coating from the viewpoint, among the adhesion amount of the sum of zinc oxide film and ZnO film, it is preferable that the adhesion amount of the zinc-based metallic soap coating more than half.
[0055]
　In this connection, the measurement method of the adhesion amount of the zinc-based metal soap coating, for example, utilizing fluorescent X-ray method. Specifically, the fluorescent X-ray method, a calibration curve adhesion amount of the zinc-based metal soap coating (Zn content equivalent) using several standard sample is known, the Zn strength of the sample to be measured in terms of the adhesion amount of the zinc-based metal soap film, obtaining the adhesion amount of the zinc-based metal soap coating.
[0056]
　Here, zinc-based metal soap coating, of the surface of the Al coating layer side of the coated steel sheet body may be formed at least on the surface in contact with the hot press die sliding surface of the.
　Specifically, for example, if ZnO film is formed on the Al plating layer of the plated steel sheet body, zinc-based metal soap coating, when the plated steel sheet was hot press molded by hot pressing mold, resulting it is that it is at least formed on the surface of the vertical wall portion and a plated steel sheet comprising a flange portion of the press-molded product (Al plating layer or ZnO film of the plated steel sheet body) to be. Plated steel sheet portion to be the vertical wall portion of the press-molded product, and the flange portion, the surface of the mold (e.g., "holder portion and the shoulder portion for holding the steel sheet" in the upper die holder portion for holding the "steel plate in the lower die and reference for a portion to be molded while sliding on the shoulder ") (Fig. 3 (8)), in order to mold wear is liable region it occurs.
　On the other hand, when no ZnO film is formed on the Al plating layer of the plated steel sheet body, zinc-based metal soap coating may be preferably formed on the entire surface of the Al coating layer.
[0057]
　Plated steel sheet according to the present embodiment described above is used for hot press forming in a state having a zinc-based metal soap coating, heating the zinc-based metal soap film advance, the hot press forming in a state where a ZnO film it may be used to.
　That is, the plated steel sheet according to the present embodiment includes a steel plate, a plated steel body having a single-sided or Al plating layer provided on both surfaces of the steel plate, provided on the surface of the Al coating layer side of the coated steel sheet body ZnO has a coating, the as hot-press-plated steel maximum value of skewness Rsk is less than 0 in the roughness curve of the surface of the ZnO film may be used in the hot press forming.
[0058]
　Here, the skewness Rsk of a roughness curve, measured according to JIS B 0601 (2001 years). Specifically, the skewness Rsk of a roughness curve according to IS B 0601 (2001 years), measured under the following measurement conditions.
[0059]
- Measurement conditions -
Measuring device: Mitutoyo Ltd., "surface roughness-profile measuring instrument Form Tracer"
measured length L: 9.6 mm
cut-off wavelength [lambda] c: 0.8 mm
probe tip shape: tip angle 60 ° cone
touching needle tip radius: 2 [mu] m
measurement speed: 1 mm / sec
[0060]
　Here, the skewness Rsk of the roughness curve is defined in JIS B 0601 (2001 years), is an index representing the peaks and valleys of the symmetry with respect to the average line of the roughness curve. This Rsk is positive is (0
　method for producing a coated steel sheet according to the present embodiment, on the surface of the Al coating layer side of the coated steel sheet body, having a step of forming a zinc-based metal soap coating.
　Specifically, for example, if the ZnO film on the Al plating layer of the plated steel sheet body is not provided, a manufacturing method of a plated steel sheet includes a step of forming a zinc-based metal soap film on the surface of the Al coating layer. On the other hand, when the ZnO film is provided on the Al plating layer of the plated steel sheet body, method for manufacturing a coated steel sheet includes a step of forming at least a portion of zinc-based metal soap film on the surface of the ZnO film.
[0062]
　When plated steel body has no ZnO film (i.e., the case of forming a zinc-based metal soap film on the surface of the Al plating layer of the plated steel sheet body), an adhesion amount of the zinc-based metal soap coating with Zn amount in terms 7 .1 ~ 19.8 g / m 2 and, preferably 8.82 ~ 16.3 g / m 2 and.
　On the other hand, if the plated steel sheet body has a ZnO film (i.e., the case of forming a surface on zinc-based metal soap coating ZnO film of the plated steel sheet body), the total zinc-based combined with coating weight of ZnO film of the plated steel sheet body adhesion amount of the metal soap coating the (total adhesion amount of ZnO film and a zinc-based metal soap coating of the plated steel sheet body), 7.1 ~ 19.8g / m in Zn amount conversion 2 and preferably from 8.82 to 16 .3G / M 2 a. However, from the viewpoint of enhancing the surface smoothness of the ZnO film formed from a zinc-based metal soap coating, of coating weight of the total of the ZnO film and zinc oxide film, and the adhesion amount of the zinc-based metallic soap coating over half it is preferable to.
[0063]
　In the step of forming a zinc-based metal soap coating, spray coater, using well known coating apparatus of the roll coater, die coater or the like, by applying a zinc-based metal soap itself, to form a zinc-based metal soap coating. Other, sponge, by utilizing an electrostatic oiling device or the like, may be formed of zinc-based metal soap coating. In the application, it may adjust the viscosity of the zinc-based metal soap in an organic solvent. Then, after applying a zinc-based metal soap, if necessary, for example, a coating of zinc-based metal soap 300 ° C. or higher, and dried over 2 minutes, zinc-based metal soap film is formed.
[0064]
　Here, in the step of forming a zinc-based metal soap coating, the type of zinc-based metal soap, the formation region of the zinc-based metal soap coating is as described above.
[0065]
　Method for producing a coated steel sheet according to the present embodiment, a zinc-based metal soap coating was heated at 300 ° C. or higher, it may have a step of the ZnO film. That is, by heating, the oxidation of zinc of the zinc-based metal soap film, ZnO film by decomposing organic substances other than zinc (fatty acids), which satisfies the skewness Rsk is Rsk <0 of the roughness curve of the ZnO film (e.g. surface ) and after, the plated steel sheet obtained may be used in the hot press forming.
　The heating of the zinc-based metal soap coating the ZnO coating, 300 ° C. or higher, it is preferably carried out in two or more minutes condition.
[0066]

　method for producing a hot press molded product according to this embodiment, the plated steel sheet according to the present embodiment by hot press molding, a method for production of moldings.
[0067]
　Specifically, for example, a manufacturing method of the hot press molded product is a method of manufacturing a plated steel sheet according to the present embodiment, in the step of forming a zinc-based metal soap coating, the surface of the Al coating layer side of the coated steel sheet body These types, on the face in contact with the hot press die sliding surface of, after forming at least the zinc-based metal soap coating, the produced hot-press coated steel sheet for hot press forming. In this case, zinc-based metal soap coating of the plated steel sheet after a ZnO film by heating before pressing, plated steel sheets are pressed.
[0068]
　Further, for example, in the manufacturing method of the hot press-formed product, in the production method of a plated steel sheet according to the present embodiment, the zinc-based metal soap coating was heated at 300 ° C. or higher, skewness Rsk of the roughness curve of the surface is 0 < the plated steel sheet manufactured through the process of the ZnO film satisfying Rsk may be hot press-forming.
[0069]
　The method of manufacturing a hot press-formed article according to the present embodiment, the hot press forming method, for example, by blanking (punching) optionally, a plated steel sheet is softened by heating to a high temperature. Then, using a mold, and molding the softened plated steel sheet by press, then cooled. Thus, in the hot press forming, by temporarily softening the plated steel sheet can be easily performed subsequent pressing. Further, the hot press molded press formed product is hardened by heating and cooling, a higher than about 1500MPa tensile strength molded article.
[0070]
　As the heating method when hot press forming is normally the electric furnace, in addition to the radiant tube furnace, infrared heating, conduction heating, it is possible to adopt a heating method by induction heating or the like.
[0071]
　Al plating layer of the plated steel sheet is melted when heated to the melting point or higher, the mutual diffusion of Fe at the same time, Al phase, Al-Fe alloy phase, changes to Al-Fe-Si alloy phase. The melting point of the Al-Fe alloy phase and Al-Fe-Si alloy phase is high, is about 1150 ° C.. Intermetallic compounds contained in the Al-Fe alloy phase and Al-Fe-Si alloy phase is a plurality of types, high-temperature heating, or a long time to heat, it will change to a more Fe concentration of high alloy phase.
[0072]
　State preferred Al plating layer as a press molded article, while alloyed to the surface, and a state not high Fe concentration in the alloy phase. When the Al that is not alloyed remaining, only this portion is rapidly corroded, corrosion resistance after coating is deteriorated, undesirably coating blistering tends extremely to occur. On the other hand, if too high Fe concentration in the alloy phase, decreases the corrosion resistance of the alloy phase itself, corrosion resistance after coating is deteriorated and the coating film blistering tends to occur. That is, the corrosion resistance of the alloy phase is dependent on the concentration of Al alloy phase. Therefore, in order to improve the corrosion resistance after painting, to control the state of alloying under the heating conditions with the Al deposition amount.
[0073]
　The heating method when hot press forming, the average heating rate in the temperature range up to peak metal temperature of from 10 ° C. lower temperature from 50 ° C., it is preferable to 10 ~ 300 ° C. / sec. The average rate of Atsushi Nobori influences the productivity in hot press forming the plated steel sheet. When the average heating rate is less than 10 ° C. / sec, it takes time to softening of the hot-press-plated steel sheet. On the other hand, if it exceeds 300 ° C., although softening is fast, sometimes it alloyed Al plating layer causes significantly powdering. Typical average heating rate in the case of atmospheric heating is about 5 ° C. / sec. The average heating rate of more than 100 ° C. / sec can be achieved by electrical heating or high-frequency induction heating.
[0074]
　On the other hand, the maximum temperature, it is necessary to hot press forming in the austenite single-phase region, is often a temperature of usually about 900 ~ 950 ° C. are employed. In the hot press molding, the maximum temperature is not particularly limited, it is difficult not preferable to provide a sufficient quenching hardness is less than 850 ° C.. Also, Al plating layer is also required to be Al-Fe alloy phase. From these viewpoints, the maximum temperature is preferably set to 850 ° C. or higher. On the other hand, when the maximum temperature is higher than 1000 ° C., excessively proceeds and alloying of Fe concentration in Al-Fe alloy phase which may lead to a decrease in corrosion resistance after painting to rise. From these viewpoints, the upper limit of the maximum temperature was the Atsushi Nobori rate, can not be said sweepingly because it depends on the amount of deposition of Al, even in consideration of economic efficiency, it is preferable to set the maximum temperature and 1100 ° C. or less .
[0075]
　Then, in the hot press forming, the plated steel sheet which has been heated to a high temperature, press molded by a die. Thereafter, by cooling, press-molded article having a desired shape is obtained.
[0076]
　Here, one example of a conventional process from manufacture of the plated steel sheet to hot press molding are as follows.
　First, the steel plate (FIG. 3 (1): in FIG. 12 shows a steel plate) on one or both sides of, to form an Al plating layer (FIG. 3 (2): in FIG. 14 shows the Al plating layer).
　Next, the surface of the Al coating layer to form a ZnO film (FIG. 3 (3):. 3 in. 16 shows a ZnO film)
　Next, taking up the plated steel sheet obtained coiled (Fig. 3 (4): 3 of 20 denotes a plated steel sheet coiled (plated steel sheet body in the present embodiment))..
　Then, pull the plated steel sheet coiled, blanking (punching) to (3 (5) to 3 (6): 3 of 22 indicates a blank).
　Next, a heating furnace, heating the blank (FIG. 3 (7): 3 of 24 indicates a heating furnace.).
　Next, the upper die and the pair of molds of the lower die, and breath the heated blanks, molded and hardened (Fig. 3 (8): 3 in 26A upper mold, 26B denotes a lower mold).
　Then, by removing from the mold, press-molded product of interest is obtained (FIG. 3 (9): 3 of 28 shows a press-formed product)
[0077]
　On the other hand, in the normal process of the manufacture of the plated steel sheet to hot press forming, zinc-based metal soap coating after Al plating layer formed between each step or respective steps until the heated plated steel sheet (blank) in form. Specifically, zinc-based metal soap coating is 1) after the Al coating layer formed, is formed on the surface of the Al plating layer of the plated steel sheet body (blank or the like after blanking) (Note that the entire surface of the Al coating layer when forming a zinc-based metal soap coating, the formation of the ZnO film may be omitted.), or, 2) after the formation of the ZnO film, the ZnO film of the plated steel sheet body (blanking after the blank, etc.) forming a zinc-based metal soap film on the surface.
[0078]
　The area where the zinc-based metal soap coating, although the entire surface of the Al plating layer or ZnO film is preferable as long as it is a on the face in contact with the hot press die sliding surface of the. Surface plated steel sheet is in contact with the hot press die sliding surface of, for example, plated steel sheet comprising a vertical wall portion and the flange portion of the resulting press-molded article (Al plating layer or ZnO film of the plated steel sheet body) it is a surface. Specifically, for example, the surface plated steel sheet is in contact with the hot press die sliding surface of the "holder portion and the shoulder portion for holding the steel sheet" in the upper mold, to hold the "steel plate in the lower die holder the surface of the parts and plated steel sheet in contact with the shoulder "(plated steel sheet body) (FIG. 3 (8) see Figure 3 in 26A1 upper die holder portion, 26A2 shoulder portion of the upper mold, 26B1 lower mold holder of, 26B2 indicates the shoulder of the lower mold.).
[0079]
　The heating of the plated steel sheet before pressing may be performed while the zinc-based metal soap coating, a zinc-based metal soap coating may be performed after the ZnO film.
[0080]

　The hot press forming method according to the present embodiment, various of the press-molded product can be produced. Then, the manufactured press-plane ZnO film has been formed, particularly excellent corrosion resistance (i.e., painting corrosion resistance). Therefore, when producing a press-molded article for a vehicle, the manufactured press-surfaces of a ZnO film mounted toward the outside of the vehicle, it is preferable to produce the vehicle.
[0081]
　Specifically, for example, manufactured by hot press forming method according to the present embodiment, the press-formed product which is exposed when mounted on a vehicle (e.g., center pillar outer, door outer roof rail outer, side panels, fenders, etc.) to. Then, when attached to these press-molded product in a vehicle, as side "surface ZnO film has been formed," faces the outside of the vehicle (e.g., so as to be exposed from the vehicle), attaching the press-molded product in the vehicle.
Example
[0082]
　Then, while indicating examples further illustrate the present disclosure. The present disclosure is not limited to the following examples.
[0083]

　In cold-rolled steel sheet thickness shown in Table 1 (mass%, C: 0.21%, Si : 0.12%, Mn: 1.21%, P: 0.02%, S: 0.012%, Ti: 0.02 %, B: 0.03%, Al: 0.04%, balance: and Al plated with Sendzimir method on both surfaces of Fe and impurities). Annealing temperature was about 800 ° C., Al plating bath contains 9% of Si, it contained Fe eluted from the other cold rolled steel sheet. The Al basis weight after plating was adjusted by gas wiping method, after the Al basis weight per surface shown in Table 1, and cooled. Then, the formed Al plating layer, chemical (CI Kasei Co., Ltd. NanoTek Slurry, zinc oxide grain particle size = 70 nm) was coated by a roll coater, baked at about 80 ° C., the adhesion amount shown in Table 1 to the formation of ZnO film. There was thus obtained the test material coated steel sheet.
[0084]

　In cold-rolled steel sheet thickness shown in Table 1 (mass%, C: 0.21%, Si : 0.12%, Mn: 1.21%, P : 0.02%, S: 0.012% , Ti: 0.02%, B: 0.03%, Al: 0.04%, balance: and Al plated with Sendzimir method on both surfaces of Fe and impurities). Annealing temperature was about 800 ° C., Al plating bath contains 9% of Si, it contained Fe eluted from the other cold rolled steel sheet. The Al basis weight after plating was adjusted by gas wiping method, after the Al basis weight per surface shown in Table 1, and cooled. Then, the formed Al plating layer, chemical (CI Kasei Co., Ltd. NanoTek Slurry, zinc oxide grain particle size = 70 nm) was coated by a roll coater, baked at about 80 ° C., the adhesion amount shown in Table 1 forming a ZnO film of (Zn amount conversion). Then, on the ZnO film, a zinc-based Bisuokutan zinc as a metal soap (manufactured by DIC "Zn-OCTOATE 22% solventless") was applied by a roll coater, a coating weight of zinc-based metal soap film shown in Table 1 form did. There was thus obtained the test material coated steel sheet.
[0085]

In Table 1 are shown the thickness of the cold-rolled steel sheet (mass%, C: 0.21%, Si : 0.12%, Mn: 1.21%, P : 0.02%, S: 0.012% , Ti: 0.02%, B: 0.03%, Al: 0.04%, balance: and Al plated with Sendzimir method on both surfaces of Fe and impurities). Annealing temperature was about 800 ° C., Al plating bath contains 9% of Si, it contained Fe eluted from the other cold rolled steel sheet. The Al basis weight after plating was adjusted by gas wiping method, after the Al basis weight per surface shown in Table 1, and cooled. Then, the formed Al plating layer, the Bisuokutan zinc (manufactured by DIC "Zn-OCTOATE 22% solventless") was applied by a roll coater as zinc-based metal soap, coating weight of zinc-based metal soap film shown in Table 1 It was formed. There was thus obtained the test material coated steel sheet.
[0086]

　The properties of the test material coated steel sheet produced as described above were evaluated by the following method. The average heating rate during heating to 920 ° C. was set to 7.5 ° C. / sec.
[0087]
(1) Hot lubricity
　using an evaluation device for a hot lubricity shown in Figure 4, was evaluated hot lubricity test material of plated steel sheet. Evaluation device for a hot lubricity shown in FIG. 4 includes a near-infrared heating furnace 100, and a mold having upper 102A and the lower die 102B. Upper die 102A and the lower mold 102B has a convex portion having a width 10mm extending in a direction perpendicular to the drawing direction of the plated steel sheet by sandwiching the test material at the top surface of the projection of each other, predetermined pressing a load is applied. Furthermore, the evaluation device for a hot lubricity, plated steel sheet was heated in a near-infrared heating furnace 100, and a thermocouple (not shown) for measuring the temperature of the plated steel sheet at the time of sandwiching the mold be provided there. In FIG. 4, 10 denotes a test piece of the plated steel sheet.
　Using an evaluation device for a hot lubricity shown in FIG. 4, the near-infrared heating furnace 100, a nitrogen atmosphere, was heated 920 ° C. sample material of 30 mm × 500 mm, the test material was approximately 700 ° C. , (while the words test piece slid in the mold) while applying a pressing load of 3kN in a mold having upper 102A and the lower die 102B, to measure the pulling force is withdrawn. Incidentally, the pull-out length is 100 mm, pulling rate was 40 mm / s. Then, to determine the hot friction coefficient (= (pulling load) / (pressing load)).
[0088]
(2) Mold wear amount
　mold wear amount was determined by analyzing the surface shape difference "mold hot lubricity measuring device" in (1) before and after the evaluation test of the hot lubricity. Specifically, by using a profile measuring instrument contact, by measuring the profile of the mold surface at the sliding portion of the front and rear sliding, it was measured mold wear amount. Incidentally, the mold wear amount was an average value of the upper and lower dies of the wear amount.
[0089]
(3) the surface properties of the test piece
　for the surface properties of (1) test specimen (the ZnO film) after evaluation test of the hot lubricity was evaluated maximum value of skewness Rsk of the roughness curve in the positive and negative. Skewness Rsk of a roughness curve, in the method described above, and the second-sectional measurement in the rolling direction and the direction perpendicular to the rolling direction of the material. Using the maximum value of the values therein as an evaluation value. It should be noted that the notation and in the table, "+" indicates a "0
　In the hot press forming from the production of plated steel sheet until the (hot press) (see FIG. 3), the object to form a zinc-based metal soap coating (timing) and conditions (forming method, the adhesion amount, whether the heating step of the zinc-based metal soap coating the ZnO film, forming portion) was changed as shown in Table 2, manufacturing a press molded article (dish-shaped molded article) did. However, the target for forming a zinc-based metal soap coating case of the surface of the Al plating layer, formed of ZnO film was not performed.
　In the hot press forming (hot press), similarly to the evaluation test of the hot lubricity, after heating the coated steel sheet to 900 ° C., 700 ° C., and pressed under the conditions of a pressing load of 3 kN.
　The type of the steel sheet, the conditions for forming the Al plating layer, forming conditions, the type of zinc-based metal soaps of ZnO film were the same conditions as in Example 1.
[0095]
　And, it was carried out the following evaluation.
　1) to prepare a test material of the plated steel sheet of the same conditions as the resulting molded article was evaluated in the hot lubricity using this test piece.
　2) in the same manner as in the evaluation of the die wear amount, "holder portion and the shoulder portion for holding the steel sheet" in the mold (upper die, "holder portion and the shoulder portion for holding the steel sheet" in the lower mold)) Wear the amount was measured.
　3) in the same manner as in the evaluation of the surface properties of the test material was evaluated surface properties of the molded article (the vertical wall portion and the flange portion).
[0096]
　Hereinafter, Table 2, showing in Examples 9-16, Comparative Example 9, the details of Example 1 in the list.
　In Table 2, the adhesion amount of the zinc-based aliphatic metallic soap coating column (Zn amount equivalent), Example 9, "zinc to form a zinc-based aliphatic metal soap film on the surface of the Al coating layer adhesion amount of aliphatic metal soap film itself (Zn weight basis) indicates, in examples 10 to 16 forming the zinc-based aliphatic metal soap film on the surface of the ZnO film "ZnO film and a zinc-based aliphatic metal soaps adhesion amount of the total coating a (Zn amount conversion) shown.
[0097]
[Table 2]

[0098]
　Table 2, as shown in Examples 9-16, during the period from the manufacture of the plated steel sheet before pressing hot press forming (hot press), the surface of the Al plating layer or ZnO film, a zinc-based metal soap coating by forming the, along with improved hot lubricity, it was confirmed that can be reduced the wear of the sliding surface of the mold.
　As shown in Examples 9-10, even when ZnO film by heating the zinc-based metal soap film, sure you can similarly, with improved hot lubricity, can reduce the wear of the sliding surface of the mold did.
　As shown in Examples 14 to 16, the surface of the plated steel sheet comprising a vertical wall portion and the flange portion of the molded article (Al plating layer or ZnO film of the plated steel sheet body), forming at least a zinc-based metal soap coating it is confirmed that it is possible to be reduced wear on the sliding surface of the mold.
　Then, in Examples 9-16, the peeling of the ZnO film on the surface of the molded article is not observed, the chemical conversion treatment of the resulting molded product, corrosion resistance was confirmed to be able to improve.
[0099]
　Incidentally, as shown in Comparative Example 9, on the surface of the mold (the shoulder portion and the holder portion of the "upper and lower dies which plated steel slides during breath), also form a zinc-based metal soap coating, thermal during lubricity improver, and reduce wear of the sliding surface of the mold and it was confirmed that not observed.
　However, as shown in reference example 1, so as not to cause the film out, continuously supplying a metal soap by improvement of hot lubricity, and wear reduction of the sliding surface of the mold was observed.
[0100]
　Having described in detail preferred embodiments of the present disclosure with reference to the accompanying drawings, it is to be understood that the present disclosure is not limited to such an example. It would be appreciated by those ordinarily skilled in the art that belongs present disclosure, within the scope of the technical idea described in the claims, it is intended to cover various changes and modifications also should be understood that such modifications and changes belong to the technical scope of the present disclosure for these.
[0101]
　Incidentally, disclosure of Japanese Patent Application No. 2016-256016 its entirety is incorporated herein by reference.
　All documents described herein, patent applications, and technical standards, each individual publication, patent application, and that the technical specification is incorporated by reference to the same extent as if marked specifically and individually, It incorporated by reference herein.

WE CLAIM

And the steel sheet, the plated steel body having a single-sided or aluminized layer provided on both surfaces of the steel plate,
　provided on the plated steel sheet body of the aluminum plated layer side on the surface, the adhesion amount of adhering portions of Zn amount conversion 7.1 ~ 19.8 g / m 2 and zinc-based metal soap coating,
　hot-press coated steel sheet having.
[Requested item 2]
　Steel plate and the aluminum plating layer provided on one surface or both surfaces of the steel sheet, and plated steel body having a zinc oxide coating disposed on a surface of the aluminum plating layer,
　the zinc oxide film of the plated steel sheet body , a zinc-based metal soap coating disposed on the surface
　with a
　deposition amount of attachment of the sum of said zinc oxide coating the zinc-based metal soap coating, in amount of Zn in terms 7.1 ~ 19.8 g / m 2 hot-press-plated steel sheet is.
[Requested item 3]
　Of the total adhesion amount of attachment of the said zinc oxide film and the zinc-based metal soap coating, hot press-according to claim 2 or half a adhesion amount of attachment of the zinc-based metal soap coating plated steel sheet.
[Requested item 4]
　The zinc-based metal soap coating, Bisuokutan zinc, zinc octylate, zinc laurate, and the claims 1 to 3 is a coating of at least one zinc-based metal soap selected from the group consisting of zinc stearate hot-press coated steel sheet according to any one.
[Requested item 5]
　Steel plate and the plated steel plate body having a single-sided or aluminized layer provided on both surfaces of the steel sheet,
　a zinc oxide coating disposed on the surface of the aluminum plating layer side of the coated steel sheet body
　has,
　the hot pressing plated steel maximum value of skewness Rsk is less than 0 in the roughness curve of the surface of the zinc oxide film.
[Requested item 6]
　Steel plate and, on the aluminized layer side on the surface of the plated steel sheet body having an aluminum plating layer provided on one surface or both surfaces of the steel sheet to 7.1 at a coverage of attachment is Zn amount conversion 19.8g / m 2 manufacturing method of hot-press coated steel sheet comprising a step of forming a zinc-based metal soap coating so that.
[Requested item 7]
　And the steel plate, and one side or aluminized layer provided on both surfaces of the steel sheet, on the surface of the zinc oxide film of the plated steel sheet body having a zinc oxide film provided on the aluminum plating layer, the zinc oxide film total deposition of coating weight 7.1 ~ 19.8 g / m with Zn amount in terms of the adhesion amount of attachment of the 2 hot press for plating having a step of forming a zinc-based metal soap film to be method of manufacturing a steel plate.
[Requested item 8]
　In the step of forming the zinc-based metal soap coating of adhesion amount of attachment of the sum of the zinc oxide film and the zinc oxide film, more than half the amount of adhered attachment of the zinc-based metal soap coating method for manufacturing a hot-press coated steel sheet according to claim 7.
[Requested item 9]
　Said zinc-based metal soap coating was heated at 300 ° C. or higher, a manufacturing method of hot-press-plated steel sheet according to any one of claims 6 to claim 8 comprising the step of the zinc oxide film.
[Requested item 10]
　Method for manufacturing a hot-press coated steel sheet according to claim 9 the maximum value of the skewness Rsk of the roughness curve of the surface of the zinc oxide film formed by heating said zinc-based metal soap coating is less than 0.
[Requested item 11]
　The zinc-based metal soap coating, Bisuokutan zinc, zinc octylate, zinc laurate, and the claims 6 to claim 10 which is film of at least one zinc-based metal soap selected from the group consisting of zinc stearate method for manufacturing a hot-press coated steel sheet according to any one.
[Requested item 12]
　The method for manufacturing a hot-press coated steel sheet according to any one of claims 6 to claim 11 comprising the steps of producing a plated steel sheet for hot press, the step of forming the zinc-based metal soap coating the one on the surface of the aluminum plating layer side of the coated steel sheet body, on the surface in contact with the hot press die sliding surface of the hot press process after, to form at least said zinc-based metal soap coating process and, for producing a plated steel sheet for hot press Te
　, and hot pressing step of hot press forming the hot-press coated steel sheet
　manufacturing method of the hot press-formed product having a.
[Requested item 13]
　Hot Hot manufacturing method of a press molded article of the manufactured hot-press-plated steel sheet for hot press forming by the method for producing a press-plated steel sheet according to claim 10.
[Requested item 14]
　Manufacturing method of the claim 12 or claim 13 press-molded article produced by hot method of manufacturing a press molded article according to attach the face with a zinc oxide film toward the outside of the vehicle the vehicle.