Cold rolled steel plate

Cold rolling is a steel plate that is further thinned to a target thickness under room temperature conditions and below the recrystallization temperature. 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 generally do not have a heating process before rolling. However, due to the small thickness of the strip, plate shape problems are prone to occur. Moreover, the finished product is obtained after cold rolling. Therefore, in order to control the dimensional accuracy and surface quality of the strip, many tedious processes are used. Cold rolling production lines are long, have many equipments, and have complex processes. As users' requirements for strip dimensional accuracy, flatness and surface quality increase, cold rolling mills have more control models, l1 and l2 systems, and flatness control methods than hot rolling units. Moreover, the temperature of the rolls and strips is also one of the more important control indicators. By definition, steel ingots or billets are difficult to deform and process at room temperature. Most steel products are rolled by hot rolling. However, because the surface of steel easily generates iron oxide scale at high temperatures, the surface of hot-rolled steel will be rough and the size will fluctuate greatly. Therefore, steel with smooth surface, precise dimensions and good mechanical properties is required. Hot-rolled semi-finished products or finished products are used as raw materials and then cold rolled. Produced by rolling method. Cold rolled steel plate production process

Type use 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.