Hot rolled stainless steel and cold rolled stainless steel are the forming process of section steel or steel sheet.Cold rolling and hot rolling are different processes.Stainless steel cold rolled plate is simply a relatively thin steel plate, between (0.31-4.0mm), 4mm more than there is rarely cold rolled plate, surface 2B surface, bright.Stainless steel hot rolled plate is the thicker steel plate that we usually say, thin plate also has hot rolled plate, the surface is industrial face, not bright, thick plate (thickness is greater than 4mm) and thin plate (thickness is 0.5~4mm) two kinds.

Cold rolling of stainless steel

Cold rolling production processes generally include raw material preparation, pickling, rolling, degreasing, annealing, finishing, etc.Cold rolling is rolling under recrystallization temperature, with hot rolling products as raw materials, raw materials before cold rolling to remove phosphorus, in order to ensure the surface of cold rolling products clean.Cold rolling is widely used in all kinds of cold stamping parts, cold rolling cold extrusion profile, cold coil spring, cold drawing wire, cold heading bolt and so on.

Advantages:

1. molding speed, high yield, and do not damage the coating.

2. plastic deformation ability, steel yield point is high.

3. cold rolling surface no scale, good quality, product size accuracy.

Disadvantages:

1. cold-rolled stainless steel formed steel wall thickness is small, the ability to withstand local concentrated load is weak.

2. Residual stress still exists in the section after molding, which makes the buckling characteristics of steel worse.

3. Low toughness, easy to appear when bending, bending and bending buckling when compression, poor anti-torsion performance, the price is more expensive.

Hot rolling of stainless steel

Hot rolling is rolling above the recrystallization temperature.Because its production makes craft to make its application is in civil respect more, wait like appliance of tableware hutch, general home appliance.

Advantages:

1. It can destroy the casting structure of steel ingot, refine the grain of steel, and eliminate the defects of microstructure, so as to make the steel structure compact.

2. Good toughness and ductility, low price.

3. The torsional resistance of hot-rolled stainless steel section is better than that of cold-rolled stainless steel section.

Disadvantages:

1. The residual stress caused by uneven cooling causes poor deformation, stability and fatigue resistance.

2. hot rolled steel plate mechanical properties are far less than cold processing.