A roll configuration method for hot continuous rolling finishing mill

Abstract

The invention relates to a roll shape collocation method for a hot continuous rolling finishing mill, and belongs to the technical field of steel rolling. The roll shape collocation method comprises aroll shape collocation strategy for working rolls and supporting rolls and a working roll channeling strategy. A key technology comprises the following steps that: the working rolls F1 to F3 of an upstream rack adopt CVC roll shapes, and the supporting rolls adopt CVC roller shapes; and the working rolls F4 to F6 of a downstream rack adopt parabola roll shapes, and are kept channeling, and the corresponding supporting rolls adopt VCR (Variable Contact Roll) shapes. According to the roll shape collocation method for the hot continuous rolling finishing mill, by roll shape and collocation optimization of a finishing rolling unit roll system, the convexity hit ratio of a cold-rolled base plate is increased, shape defects of a band steel plate are eliminated, and the rolling mileage of the working rolls is prolonged; and the roll shape collocation method has good economical and social benefits.

Description

technical field [0001] The invention belongs to the technical field of steel rolling, is suitable for producing cold-rolled substrates in a conventional hot continuous rolling production line, and in particular relates to a roll configuration method for a hot continuous rolling finishing mill. Background technique [0002] Cold-rolled sheets are widely used in the manufacture of automobiles, electrical appliances, aircraft, precision instruments, etc., and have the remarkable feature of high dimensional accuracy. As the raw material of cold-rolled plate, in order to adapt to this characteristic, the subsequent process also has higher requirements on the quality of cold-rolled plate shape (convexity). Optimizing the roll profile and configuration of the hot tandem rolling mill is one of the efficient means to improve the shape quality of the hot-rolled strip. On the one hand, a reasonable roll system roll shape and configuration can make the strip extend uniformly in the lon...

AI Technical Summary

Problems solved by technology

[0003] The 1700mm conventional hot continuous rolling production line is under the existing roll type and configuration of the roll system. Due to the small thickness of the cold-rolled substrate, many specification changes, and relatively large rolling force, uneven wear and wear of the work rolls within the unit rolling plan occurs during production. Faster, resulting in short rolling kilometers (<20 kilometers), poor strip shape at the end of rolling, etc., affecting the quality of cold-rolled substrate products and production line operating rate

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