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The difference between cold rolled steel coil and hot rolled steel coil
Cold rolled steel coil uses hot-rolled coils as raw materials and is rolled under recrystallization, but it is generally understood as rolling using normal temperature rolled materials. In Europe and the United States, 3 to 6 continuous rolling mills are mostly used as cold rolling equipment, including plates and coils, which can be produced by many domestic steel plants such as Laiwu Steel. Among them, the delivery in sheets is called cold rolled steel sheet, also called box plate or flat plate; the delivery in coils with very long length is called cold rolled steel coil.
Cold rolled steel coil is the general name of general carbon steel cold rolled steel coil. Cold rolled steel coil is made of ordinary carbon steel hot rolled steel coil, which has been deepened and cold rolled into a thick steel plate with a thickness of less than 4 mm. Because cold rolled at room temperature does not cause iron oxide scale, cold rolled steel coil has good process performance, high precision specifications, and quenching solution, its physical properties and use performance are better than hot rolled steel coil. In many industries, It is very much in the home appliance manufacturing industry, and it has been slowly using it to replace hot rolled steel coil.
Hot rolled steel coil is made of slab as raw material, and after heating, it is made into strip steel by rough rolling mill and finishing mill. The hot steel strip from the final rolling mill of the finishing rolling is cooled to a set temperature by laminar flow, and then coiled into a steel coil by the coiler. The cooled steel coil undergoes different finishing operations according to the different needs of users. Line processing becomes steel plate, flat coil and slit steel strip products. Because hot rolled steel coil products have excellent properties such as high strength, good toughness, easy processing and forming, and good weldability, Beibei is widely used in manufacturing industries such as ships, automobiles, bridges, construction, machinery, and pressure vessels.
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