Advantages and disadvantages of cold-rolled steel

Advantages of cold-rolled steel:
The molding speed is fast, the yield is high, and the coating is not damaged. It can be made into various cross-section shapes to meet the needs of the use conditions; Cold rolling can produce large plastic deformation of steel, thus improving the yield point of steel.

Disadvantages of cold-rolled steel:
1. Although there is no thermoplastic compression during the forming process, there is still residual stress on the section, which will inevitably affect the overall and local buckling characteristics of the steel;
2. The style of cold-rolled section steel is generally open section, which makes the free torsional rigidity of the section low. Torsion is easy to occur when bending, and flexural-torsional buckling is easy to occur when compression, and the torsional performance is poor;
3. The wall thickness of cold-rolled steel is small, and it is not thickened at the corner of plate connection, and the ability to bear local concentrated load is weak.