Cold rolling is made from hot-rolled coils as raw materials, which are rolled at room temperature and below the recrystallization temperature. Cold-rolled steel plates are steel plates produced through the cold rolling process, referred to as cold plates. The thickness of cold-rolled plates is generally between 0.1–8.0mm. The thickness of cold-rolled steel plates produced by most factories is less than 4.5mm. The thickness and width of cold-rolled plates are determined according to the equipment capabilities of each factory and market demand.
Compared with hot-rolled steel plates, the thickness of cold-rolled steel plates is more accurate and the surface is smooth and beautiful.
Cold-rolled plates and strips are widely used, such as automobile manufacturing, electrical products, rolling stock, aviation, precision instruments, food cans, etc. Cold-rolled thin steel plate is the abbreviation of ordinary carbon structural steel cold-rolled plate. It is also called cold-rolled plate, commonly known as cold plate, and is sometimes mistakenly written as cold-rolled plate. Cold plate is made of ordinary carbon structural steel hot-rolled steel strip, which is further cold-rolled into a steel plate with a thickness of less than 4mm. Since rolling at room temperature does not produce iron oxide scale, the cold plate has good surface quality and high dimensional accuracy. Coupled with annealing treatment, its mechanical properties and process performance are better than hot-rolled thin steel plates. In many fields, especially In the field of home appliance manufacturing, it has gradually been used to replace hot-rolled thin steel plates.