Production method of cold rolling thin slab with size of 2.75->0.165*1000mm

Abstract

The invention provides a production method of a cold rolling thin slab with a size of 2.75->0.165*1000mm. The method comprises the following steps: planning standard production according to working conditions; regulating the technical parameters of rolling oil in the rolling process; regulating the roughness and roll shape of a roller; using the roller in a sequence from small to large on a rolling pass so as to finally obtain the finished cold rolling thin slab, wherein the cold rolling thin slab has the specified size of 2.75->0.165*1000mm and the deformation of 94%. The production method has the effects that the cold rolling thin slab with the size of 2.75->0.165*1000mm has a bright and clean surface and has high cleanness; after rolling, the steel coil has no corrosion within one month; simultaneously, the production efficiency is increased by above 30%, production cost is reduced by 260 yuan per ton, the yield of the thin slab is improved, the loss of steel coil transportation isreduced, and manpower resources are saved.

Description

technical field [0001] The invention relates to a production method of 2.75->0.165*1000mm cold-rolled sheet. Background technique [0002] The original cold-rolled sheet technology is limited to foreign rolling principles and theories, and the general total deformation is less than 85%. When rolling thin plates or thin plates with deformation > 85%, intermediate annealing is used to overcome work hardening and reduce deformation resistance. The disadvantages of this process method are: [0003] 1. Two rolling processes are required, annealing is required after the first rolling process, and the second rolling process is carried out after cooling, which takes a long time and low efficiency, which increases the production cost; [0004] 2. The yield rate is low. The winding core during the first rolling process and the pressure sticking during annealing all affect the yield rate. Contents of the invention [0005] Aiming at the structural deficiencies in the prior a...

AI Technical Summary

Problems solved by technology

[0003] 1. Two rolling processes are required, annealing is required after the first rolling process, and the second rolling process is carried out after cooling, which takes a long time and low efficiency, which increases the production cost;

[0004] 2. The yield rate is low. The coil core during the first rolling process and the pressure sticking during annealing all affect the yield rate.

Images