The present invention relates generally to storage spaces and more particularly to a method of fabricating a glass fused corrugated steel storage spaces which provide structural and functional advantages.
BACKGROUND OF THE INVENTION
Conventional storage spaces include storage tanks and silos which have numerous configurations in lieu of its holding capacities and the shapes, and sizes they are available in. Yet, these storage spaces, which have multiple applications, have numerous problems to be addressed.
State of the art includes use of bolted Glass-Fused-Steel tanks or silos for applications like bio-digester, and grain storage. The major drawback of this class of tanks is requirement of high thickness of material in its construction because of which tanks are not economical. Other drawback includes low wind velocity and low seismic zone capability of the tanks.
There are few class of conventional storage spaces which are constructed with corrugation of steel, but they are not glass-fused thus failing to achieve the properties of glass viz., high food grade and high product life, non-corrosion or non- rusting for centuries.
Further, tanks made of corrugated Zincalume Steel with glass liner are available, but they are best suited for industrial material storage which can be

categorized between basic liquid and grain storage. Thus lags to cater every industrial storage need.
There is need for a storage space which can serve every industrial storage need overcoming all the drawbacks described in the state of the art storage spaces.
OBJECTIVE OF THE INVENTION
These objectives are provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This objective are not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
An important objective of the invention aims at providing a compact solution for the shortcomings of the aforesaid storage spaces.
Principle objective of the invention is to provide a method of fabricating a glass fused corrugated steel storage spaces.
Another objective of the invention is to provide a material for fabricating storage spaces, which is cost-effective yet efficient.
Yet another objective of the current invention is to provide a material to build storage spaces, which has a long life and has very low maintenance.

Further objective of the current invention is to provide a material to make multi-purpose storage space.
Object of the present invention is not limited to the above mentioned problem. Other technical problems that are not mentioned will become apparent to those skilled in the art from the following description.
SUMMARY OF THE INVENTION
In one aspect, the invention encompasses a method of fabricating a glass fused corrugated steel silos and tanks. Accordingly, the method of fabricating a glass fused corrugated steel silos and tanks, comprising the steps of corrugating steel sheet, forming corrugated steel sheet to a substantially curved shape, fusing glass particles to the corrugated steel sheet, and assembling plurality of glass fused corrugated steel sheets to form silos and tanks. The fusing comprising forming a successive buildup of glass layers on the corrugated steel sheet, drying formed glass layers for 10-15 minutes approximately at 80-90°C, firing dried glass layers to a temperature of at least about 850°C and less than the temperature of the glass for 10-15 minutes, and cooling said glass fused corrugated steel ensuing glass coating on the formed corrugated steel sheet.
In another aspect, the invention encompasses forming creases across the corrugations to provide flexibility of the structure by bending at the creases.
DETAILED DESCRIPTION OF THE INVENTION

The following description is provided to assist in a comprehensive understanding of exemplary embodiments of the invention and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention.
The terms and words used in the following description are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention.
It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.
This invention is directed to a method of fabricating a glass fused corrugated steel silos and tanks reducing the material cost yet not compromising on the strength.
A method of fabricating a glass fused corrugated steel silos and tanks, comprising the steps of corrugating steel sheet, forming corrugated steel sheet

to a substantially curved shape, fusing glass particles to the corrugated steel sheet and assembling plurality of glass fused corrugated steel sheets to form silos and tanks. The fusing comprising forming a successive buildup of glass layers on the corrugated steel sheet, drying formed glass layers for 10-15 minutes 5 approximately at 80-90˚C, firing dried glass layers to a temperature of at least about 850˚C and less than the temperature of the glass for 10-15 minutes, and cooling said glass fused corrugated steel ensuing glass coating on the formed corrugated steel sheet. The fusing of glass with steel enhances the properties of latter. Since single steel is vulnerable to environmental conditions, fusing of steel 10 with glass increases the strength, widens the acceptable bracket of PH value for alkaline solutions, and inflates the resistance to abrasion.
The method of fabricating glass fused corrugated steel silos and tanks,
also includes the steps of cutting steel sheet to the requisite measurement,
joining of plurality of steel sheets, and punching of holes in the steel sheet,
15 before corrugating the steel sheet. Further step includes shot blasting the
corrugated steel sheet before forming.
In a preferred embodiment after corrugating steel sheets, the sheets are formed to crease across the corrugations to provide flexibility of the structure by bending at the creases.
20 Steel according to the invention has considerable formability and good
glass fusing property to enable glass fusing. The steel under consideration can be
6

any low carbon (de-carbonised) steel having titanium as one of the constituent. In a particular embodiment steel of Grade ST30 can be employed. The glass has 99% glass composition and the remaining contains one or both of chemicals and polymers added to improve thermal expansions of steel. In a particular 5 embodiment glass can be a porcelain enamel, also called as vitreous enamel which is a solid, smooth and shiny cover of silicate mixed with demineralization water and stirred up to 6-8 hours and applied to the corrugated steel sheet through either high and low pressure plasma spraying, spray forming, or laser glazing techniques.
10 The corrugated glass fused steel according to the invention is produced
by considering steel having considerable formability and fusing property. Said steel can take glass fusion for a longer time. Corrugation increases the strength thereby reduces the material cost thus more competitive. And also said corrugated glass fused steel has very high strength which is high enough to
15 withstand the pressure of the tank as well as the stored content.
The corrugated glass fused steel according to the present invention has advantages such as competitiveness, longevity, and better durability. Other advantages include very high abrasion resistance with very good formability and very good chemical resistance with high corrosion resistance capable of 20 withstanding as high as 2000 hours of salt spray test. And also said corrugated glass fused steel is ecologically safe.
7

The storage silos and tanks made of corrugated glass fused steel of the present invention can be used for various storage applications including but not limited to fluid storage applications viz., storing of water or oil, solid storage applications viz., storage of limestone, cement, fly-ash, wood waste, sand and gravels, granules etc., agriculture storage applications viz., storage of cereals, grains, liquid manure, dung water, liquid fertilizers, silage etc., and other storage applications including tanks for WWTPS, tanks for biogas stations, gasholder, fermenters, soot, salt etc.
Although but one preferred embodiment of the invention has been illustrated, it will be obvious to those skilled in this art that other embodiments may be readily designed within the scope and teachings thereof.

we claim,

A method of fabricating a glass fused corrugated steel silos and tanks,
comprising the steps of:
corrugating steel sheet;
forming corrugated steel sheet to a substantially curved shape;
fusing glass particles to the formed corrugated steel sheet, the fusing
comprising forming a successive buildup of glass layers on the corrugated
steel sheet, drying formed glass layers for 10-15 minutes approximately
at 80-90°C, firing dried glass layers to a temperature of at least about
850°C and less than the temperature of the glass for 10-15 minutes, and
cooling said glass fused corrugated steel ensuing glass coating on the
formed corrugated steel sheet; and
assembling plurality of glass fused corrugated steel sheets to form silos
and tanks.
2. The method of claim 1 further comprising forming creases across the corrugations to provide flexibility of the structure by bending at the creases.
3. The method of claim 1, wherein said steel sheet is a low carbon steel having titanium as one of a constituent.
4. The method of claim 2, wherein said steel is of grade ST30.
5. The method of claim 1, wherein said glass has 99% glass composition and the remaining contains one or both of chemicals and polymers.
6. The method of claim 5, wherein said glass is a porcelain enamel.

7. The method of claim 1, wherein the glass coating is applied to the corrugated steel sheet as a plasma spray.
8. A glass fused corrugated steel for production of silos and tanks, prepared by a process comprising the steps of:
corrugating steel sheet; and
fusing glass particles to the formed corrugated steel sheet, the fusing comprising forming a successive buildup of glass layers on the corrugated steel sheet, drying formed glass layers for 10-15 minutes approximately at 80-90°C, firing dried glass layers to a temperature of at least about 850°C and less than the temperature of the glass for 10-15 minutes, and cooling said glass fused corrugated steel ensuing glass coating on the formed corrugated steel sheet.
9. The glass fused corrugated steel of claim 1 further comprising forming creases across the corrugations to provide flexibility of the structure by bending at the creases.
10. The glass fused corrugated steel of claim 1 wherein the glass coating is applied to the corrugated steel sheet as a plasma spray.