Stainless steel cold rolling production unit and production method thereof

Abstract

The invention discloses a stainless steel cold rolling production unit comprising an uncoiling section, a first annealing and acid pickling section, a cold continuous rolling section, a second annealing and acid pickling section and a coiling section, wherein the uncoiling section, the first annealing and acid pickling section, the cold continuous rolling section, the second annealing and acid pickling section and the coiling section are sequentially arranged in the rolling section. The uncoiling section comprises a first uncoiling machine, a second uncoiling machine, a first shearing machineand a welding machine, wherein the first uncoiling machine, the second uncoiling machine, the first shearing machine and the welding machine are sequentially arranged. The first annealing and acid pickling section comprises a first annealing furnace, a shot blasting machine and a first acid pickling device, wherein the first annealing furnace, the shot blasting machine and the first acid picklingdevice are sequentially arranged. The cold continuous rolling section comprises a cold continuous rolling unit and a degreasing and washing device, wherein the cold continuous rolling unit and the degreasing and washing device are sequentially arranged. The second annealing and acid pickling section comprises a second annealing furnace and a second acid pickling device, wherein the second annealing furnace and the second acid pickling device are sequentially arranged. The coiling section comprises a second shearing machine, a first coiling machine and a second coiling machine, wherein the second shearing machine, the first coiling machine and the second coiling machine are sequentially arranged. The invention further discloses a method for producing stainless steel by means of the stainless steel cold rolling production unit. The stainless steel cold rolling production unit has the beneficial effects that a hot rolling annealing and acid pickling unit, a cold continuous rolling unit and a cold rolling annealing and acid pickling unit are integrated, a combined unit is formed, and continuous batch production from hot rolled black plate roll fed materials to cold rolled finished products is achieved.

Description

technical field [0001] The invention relates to the technical field of cold rolling, in particular to a stainless steel cold rolling production unit and a production method thereof. Background technique [0002] At present, the direct rolling annealing and pickling process is widely used at home and abroad to produce stainless steel cold-rolled products. The direct rolling annealing and pickling process is developed on the basis of the traditional hot rolling annealing and pickling process and cold rolling annealing and pickling process. The feature is: the single-stand cold rolling mill or cold tandem rolling mill is integrated with the annealing and pickling unit to form a combined unit. The direct rolling annealing pickling process is divided into black coil direct rolling annealing pickling process and white coil direct rolling annealing pickling process according to whether the incoming material has been pickled or not. The incoming material of black coil direct rollin...

AI Technical Summary

Problems solved by technology

Although direct rolling of white coils can produce thin stainless steel products, since the annealing and pickling unit for direct rolling of white coils and the hot rolling annealing and pickling unit are independent of each other, the white coils produced by the hot rolling annealing and pickling unit need to be transported by the workshop crane to At the entrance of the direct rolling, annealing and pickling unit, the steel coil car is coiled and the uncoiler is uncoiled and threaded. Therefore, from the perspective of the entire production process, this process has a long production cycle, low production efficiency and high production costs.

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