Steel is an Alloy of Iron and Carbon. Steel is divided as Low Carbon(Mild Steel) , Medium Carbon and High Carbon Steel based on Carbon content & Killed, Semi killed and Rimming Steel based on deoxidation process. Application of Steel involves in various Automobile, White Goods and Structural applications. Steel is an Alloy of Iron and Carbon. Steel is divided as Low Carbon(Mild Steel) , Medium Carbon and High Carbon Steel based on Carbon content & Killed, Semi killed and Rimming Steel based on deoxidation process.Application of Steel involves in various Automobile, White Goods and Structural applications.

Pig Iron, Wrought Iron and secondary scrap.

Coils rolled from Slabs above Recrystallisation Temperature are called as Hot Rolled Coils.

CRCA is Cold Rolled Close Annealed material. Applications of CRCA includes various Automobile, White Goods applications.

Roller Bearing cages, Outer & Inner panels of Cars ( door, roof, bonnet, fender, Body side, Floor, Dash, etc.) , Muffler & Silencer, Motorcycle & Scooter panels, Fuel tank of vehicles.

Hot Rolled coils are Pickled in hydrochloric acid, Cold Rolled in successive passes, Electrolytically cleaned, Annealed in batch type furnaces in hydrogen atmosphere and Skin passed with application of rust preventive oil to make CRCA in different grades and textures ( Bright & Matt )

Matt : Surface Roughness is 0.6 to 1.4microns.
Bright : Surface Roughness is less than 0.5 microns. Matt finish is used for Painting & drawing applications and Bright finish is for plating application.

Cold rolling is the mechanical working of the Steel below Recrystallisation Temperature to achieve close thickness tolerances, better surface finish. Various grades rolled in flat form are D, DD, EDD, IF grade, High Tensile strength.

Cold Rolled steel will have closed thickness profile and good surface texture & flatness compared with Hot Rolled Steel.Hot Rolled Steel is rolled above Recrystallisation Temperature and Cold Rolled steel is of below Recrystallisation Temperature. Hot Rolled coils are available above 1.60 mm to 10.00 mm thickness & Cold rolled sheets are available up to 0.10 mm to 4.00 mm Worldwide.

Hot Rolled Slitting is removal of uneven edges & Saw edge of the Hot rolled Coil for smoothening cold rolling operation.

Pickling is the process of Acid cleaning of the sheet which removes Scale ( Fe2O3) from the surface of the strip. These Oxide layers are to be essentially removed for smooth cold rolling operation & better surface quality. Hydro Chloric Acid is generally used in Pickling process.

Auto gauge control(AGC), Auto Shape control, X-Ray gauge, Universal crown & IMR Shifting to have better thickness tolerances, good shape in comparison to other Rolling mills.

Electrolytic cleaning process is capable of removing micro fines of Iron & Dirt and other unwanted foreign particles from cold rolled steel strip surface. This can not be obtained from conventional cleaning processes.

Silicated Alkali with other additives like surfactants etc. is used to achieve required level of cleanliness.

Annealing is the process of Heat Treatment in which internal stresses of highly cold worked material are relieved. Steps of annealing include stress releaving, recrystalaization and grain growth. Batch type annealing and Continuous Annealing are two types of Annealing

Inert atmosphere of H2 gas has good conductivity than N2 gas.This provides good surface appearance of the strip and Consistency of property.

Kathabar process is the process of Cooling the Annealed coils to Room Temperature by Circulation of controlled dehumidified air in closed atmosphere. This process prevents Rust formation by humidity control in closed atmosphere.

Skinpass is the process of removing Yield Point Elongation of Annealed sheet. This is done for improving Surface finish & Flatness of the Strip. During this stage texture of steel is defined with application of rust preventive oil and also shape control of the required gauge by stress leveler.

Hot dip galvanizing is the process of applying a zinc coating to Cold rolled steel strip by immersing the material in a bath consisting primarily of molten zinc. The simplicity of the galvanizing process is a distinct advantage over other methods of providing corrosion protection. Galvanizing forms a metallurgical bond between the zinc and the underlying steel , creating a barrier that is part of the metal itself. In India Galvanized steel is generally used in Roofing, Refrigerator door & body panels and manufacture of various parts Home appliances.

Material removal from rolls ( Used in cold rolling Mill ) with the help of grinding wheel is Roll grinding.

EDT means Electrical discharge texturing machining. In this method material removal from rolls by means of controlled electrical discharges between the tool electrode and the work piece ie Rolls. Its function is to make the surface of the rolls from Bright to Matt Finish.

CRS is Cold Rolled Slitter & CTL is Cut to Length. CRS is being done for trimming the sheet to the required Width in close tolerance. CTL is being done for cropping the sheet to the required length.

The process of forming or ribbing a flat sheet of material into a consistent, symmetrical profile to increase that material's strength to weight ratio up to 30% over the conventional material. The forming of sheet metal into a series of straight, parallel alternate ridges and grooves with a rolling mill equipped with matched roller dies or a press brake equipped with specially shaped punch and die.