The production of cold-rolled ASTM A167 304 stainless steel plate is not only "cold rolling", but also includes annealing, pickling, grinding, etc. before cold rolling. After cold rolling, leveling, straightening, shearing, stacking plates, etc. After cold rolling, it is actually the whole process from the start of hot rolling to the production of cold rolled finished products.
Due to the characteristics of stainless steel and the special requirements for product quality, the cold rolling production process has the following characteristics:
1. Stainless steel is a kind of high alloy steel, which has a large resistance to rolling deformation. In order to carry out high-efficiency and high-precision rolling, a high-rigidity rolling mill should be used, generally a multi-roll cold rolling mill;
2. When the ASTM A167 304 stainless steel plate is cold rolled on the reversing rolling mill, the head and tail wound on the coiler will not be pressed down and become waste;
3. In the production process of stainless steel, the raw materials should be annealed, the intermediate annealing should be carried out in the cold rolling process, and the final product should be annealed, so annealing is an important part of production. However, there are many types of stainless steel, and the properties of various steels are different. The purpose, method and requirements of heat treatment are different from general heat treatment. There is a unique system process;
4. Cold-rolled stainless steel is a high-grade steel. The requirements for surface quality are very strict. Not only the metallurgical defects caused by the previous process are not allowed to remain, but also the obvious defects caused by the cold rolling process are not allowed.