Temper mill working roller bending force adjusting method and device

Abstract

The invention relates to the technical field of steel rolling and discloses a temper mill working roller bending force adjusting method and device. The method includes the steps of obtaining a current equivalent roller channeling value S1 of a temper mill working roller, an equivalent roller channeling value S0 of the temper mill working roller before the roller channeling value is adjusted, an equivalent width of strip steel B, a regulation effect D (B) of roller bending force for the roller gap convexity under the condition of the equivalent width B and a 6-time symmetrical polynomial roller shape curve; obtaining a calculation equation of the roller bending force adjustment amount of the temper mill working roller according to the roller shape curve, S1, S0, B and D (B) ; adjusting the roller bending force of the temper mill working roller according to the adjustment amount obtained through the calculation equation. According to the temper mill working roller bending force adjusting method and device, a solution for solving the problem of changes of the roller gap convexity due to changes of the roller channeling values of the temper mill working roller through the 6-time symmetrical polynomial roller shape curve is first put forward, the changes of the roller gap convexity due to the changes of the roller channeling values of the working roller are effectively compensated, the control effect of the temper mill on strip shapes is improved, and the strip shape pass rate of tempered products is increased.

Description

Technical field [0001] The invention relates to the technical field of steel rolling, and is mainly applicable to a method and device for adjusting the bending force of a work roll of a leveler. Background technique [0002] The leveler is an important equipment for controlling the shape quality of thin strip steel products. It plastically deforms hot-rolled or cold-rolled strip steel to eliminate strip wave shape, thereby improving the shape quality of strip steel products. In order to improve the effect of the leveler to improve the shape quality, it is necessary to design the roll profile curve for the work roll of the leveler. Through a comprehensive analysis of the quality control mechanism of the flatness and the actual profile shape of the product, it is determined that the most effective roll shape curve of the work roll of the leveler is a high-order symmetric polynomial roll curve, which is generally called a 6th-order symmetric polynomial. Roller curve. [0003] In ad...

AI Technical Summary

Problems solved by technology

Since there is no solution to the problem that the roll gap convexity will also change due to the change of the roll shift value of the work roll of the skin pass mill based on the roll shape of the high-order symmetric polynomial curve, resulting in the pass rate of the first plate shape in the skin pass process reduction of

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