Processing Method Of Cold Rolled Steel

Hot-rolled steel coil is used as raw material, and cold continuous rolling is carried out after pickling to remove the oxide skin, and the finished product is rolled hard coil. Because of the cold hardening caused by continuous cold deformation, the strength and hardness of rolled hard coil increase, and the toughness and plastic index decrease, so the stamping performance will deteriorate, and can only be used for simple deformed parts. Rolled hard coil can be used as raw material in hot dip galvanizing plant, because hot dip galvanizing units are equipped with annealing lines. The rolled hard coil weight is generally 6~13.5 tons, and the steel coil is continuously rolled for hot rolled pickling coil at room temperature. The inner diameter is 610mm.