1。 Common cold rolled steel sheet (SPCC). Ordinary cold-rolled steel sheet refers to the thick steel tube or plate with specified wall thickness that is continuously cold-rolled by the cold rolling mill. There is no safety protection on the surface, which is very easy to oxidize and rust. Therefore, in the application.
Before sheet metal processing, safety protection measures such as spraying and electroplating process shall be taken to process sheet metal.
2. Galvanized steel sheet. There are two kinds of galvanized steel plates. It is electro galvanized steel sheet (SECC). The thick steel plate is made of electro galvanized steel plate through deoiling, pickling passivation, electroplating process and various post-treatment processes. It has processability, excellent corrosion resistance and decorative art appearance. Electro galvanized steel plate is widely used in the processing of computer sheet metal chassis, and the other is hot-dip galvanized steel plate (SGCC). Hot dip galvanized steel coil is formed by infiltrating the semi-finished products processed by hot-dip galvanizing passivation or cold rolling, cleaning and quenching into the solution zinc bath with an ambient temperature of about 460 ° C, inlaying a zinc layer on the steel plate, and then aging treatment, leveling and chemical treatment. The raw materials of State Grid Corporation of China are harder than SECC materials, with poor plasticity (the design scheme prevents deep pumping), thicker zinc layer and poor arc welding ability.
3。 stainless steel. Stainless steel plate has good physical properties. Different components of stainless steel can achieve different characteristics. Therefore, it has been widely used in the field of sheet metal processing.
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