Cold and hot rolled plates are not only a kind of rolling plate, it is a generic term for cold and hot rolled plates, that is to say, cold and hot rolled plates include two kinds of cold rolled plates and hot rolled plates, and the following two kinds of rolling plates are not prevented.
The cold and hot rolled plate is divided into two kinds according to the manufacturing method, including the hot rolling and cold rolling, including the thin cold plate and the 4.5-100 mm thick plate with a thickness of 0.5.10-885 mm 72938. It is required to withstand the corrosion of oxalic acid, sulfuric acid - ferric sulphate, nitric acid, nitric acid, hydrofluoric acid, sulfuric acid - copper sulfate, phosphoric acid, formic acid, acetic acid and other acids. It is widely used in chemical industry, food, medicine, paper, petroleum, atomic energy and other industries, as well as construction, kitchen utensils, tableware, vehicles, household appliances and other parts.
In order to ensure that the mechanical properties, such as yield strength, tensile strength, elongation and hardness of all kinds of cold and hot rolled plates meet the requirements, the steel plate must be annealed, solid solution treatment, aging treatment and other heat treatment 5.10 18.104.22.168 special symbols before delivery. The corrosion resistance of cold and hot rolled plate depends on its alloy composition (Cr, Ni, Ti, Si, Al, Mn and so on) and its internal structure. According to the structural characteristics of steel grades, they can be classified into 5 types: Austenitic, austenitic ferrite, ferrite, martensite and precipitation hardening.
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