Cold rolled coils are rolled from hot rolled coils at room temperature and below recrystallization temperature. They include plates and coils. Many domestic steel mills, such as Baosteel, Wuhan Iron and Steel Co., and Anshan Iron and Steel Co., can produce color coated coils. Among them, sheet delivery is called steel plate, also known as box plate or flat plate; long, coiled delivery is called steel strip, also known as coiled plate.
Cold rolling performance: Mainly using low carbon steel grades, requiring good cold bending and welding performance, as well as a certain stamping performance.
Cold rolling process: Because there is no heating in the production process, there are no defects such as pitting and oxide scales which often occur in hot rolling, and the surface quality is good and the finish is high. Moreover, the size accuracy of cold rolled products is high, and the properties and structure of products can meet some special requirements, such as electromagnetic properties, deep drawing properties and so on
Cold Plate: Cold Plate is a hot rolled strip of common carbon structural steel, which is further cold rolled into a steel plate with a thickness less than 4 mm. Because there is no oxide scale produced during rolling at room temperature, the surface quality of cold plate is good and the dimension accuracy is high. In addition to annealing treatment, the mechanical and technological properties of cold plate are better than those of hot rolled thin plate. In many fields, especially in the field of household appliances manufacturing, the price of cold rolled thin plate replaced by hot rolled thin plate is higher than that of ordinary thin plate and slightly lower than that of galvanized steel plate. Its surface is smooth and smooth, and easy to rust when damped. It needs to be painted in time to prolong its service life. Most of them are used in air supply systems in fan, HVAC and other fields. The cold rolled sheet steel is widely used in Changlindong fan, and the product has beautiful appearance.
Cold-rolled strips have a wide range of applications, such as automobile manufacturing, electrical products, locomotives and vehicles, aviation, precision instruments, canned food, etc
Cold-rolled sheet has good properties, that is, through cold rolling, thinner and more accurate cold-rolled strip and steel plate can be obtained. It has high flatness, high surface finish, clean and bright surface, easy to be coated and processed, a wide range of varieties and uses. At the same time, it has the characteristics of high stamping performance, non-aging and low yield point. Therefore, cold-rolled sheet has a wide range of applications, mainly in application. In the automobile, printing barrel, construction, building materials, bicycles and other industries, but also the production of organic coated steel plate is the best choice.
Cold rolling can be divided into general use or stamping use:
Cold rolled sheet GB700-88 rolled coil SPCC-1B has low yield point, wide stamping plasticity zone, good shape stability and bright annealed soft sheet SPCC-SD yield point is low, stamping plasticity zone is wide, shape stability is good, stamping performance of cold rolled deep drawing steel strip SPCD is better, and it is not suitable to produce slip line cold rolled ultra deep drawing steel strip SPCE with excellent stamping formability and can reduce the width and width of cold stamping pass. Rolled plate
Types of cold rolling: annealing into ordinary cold rolling; galvanizing unit with pre-annealing treatment device to process galvanizing; basically do not need to process the face plate