A control method and system for sizing mill rolling

Abstract

This application relates to the field of rolling technology, and in particular to a control method and system for rolling in a reducing sizing mill. The method includes: acquiring historical rolling data of the reducing sizing mill's historical rolling process; obtaining factors affecting the steel pipe wall thickness and corresponding influencing factors based on the historical rolling data; calculating the correlation between multiple influencing factors and the steel pipe wall thickness; determining a set of characteristic influencing factors based on the correlation; constructing a steel pipe wall thickness prediction model based on the set of characteristic influencing factors and the corresponding steel pipe wall thickness; acquiring current rolling parameters; inputting the rolling parameters into the steel pipe wall thickness prediction model to obtain the current steel pipe wall thickness; calculating the wall thickness difference between the current steel pipe wall thickness and a preset wall thickness; and adjusting the rolling parameters based on the relationship between the wall thickness difference and the preset wall thickness difference interval. This invention solves the technical problem of "bamboo-like" defects in steel pipes causing wall thickness deviations that significantly reduce the quality and yield of rolled products.

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