Jiangsu Steel Group Co., Limited

Stainless steel manufacturer OEM & ODM

How Is Stainless Steel Cold Rolled Sheet Formed?

Inquiries : 153 - 2017/1/18 19:32:38

Stainless Steel Rolled Sheet is something which is very much in demand in the market. This is find in two types, Stainless Steel Hot Rolled Sheet and Stainless Steel Cold Rolled Sheet. We offer you both the materials but today we are going to discuss about the latter only. Cold rolled steel is essentially hot rolled steel that has had further processing.

Technically, cold rolled applies only to sheets that undergo compression between rollers. The steel is processed in cold reduction mills, where the material is cooled (at room temperature). It is then followed by annealing and/or tempers rolling. Once hot rolled steel has cooled, it is then rolled to achieve more exact dimensions and better surface qualities. Things like bars or tubes are "drawn," not rolled.

Four Advantages Of The Process:

•    Cold drawing increases the yield and tensile strengths, often eliminating further costly thermal treatments.
•    Turning gets rid of surface imperfections.
•    Grinding narrows the original size tolerance range.
•    Polishing improves surface finish.

The process of cold rolled sheet produces steel with closer dimensional tolerances and a wider range of surface finishes. Other cold finishing processes include turning, grinding and polishing and these are used to modify existing hot rolled stock into more refined products. The cold products provide a superior surface finish, superior in tolerance, concentricity and straightness when compared to hot rolled sheet.

The cold rolled product has low carbon content and it is typically annealed, making it softer than hot rolled sheet. Cold finished bars are typically harder to work with than hot rolled due to the increased carbon content. Better, more finished surfaces with closer tolerances, Stainless Steel Cold Rolled Sheet has smooth surfaces that are often oily to the touch. Tubes have better concentric uniformity and bars are true and square, and often have well-defined edges and corners.