Tension influence coefficient analysis method improving freedom degree rolling stability

Abstract

The invention provides a tension influence coefficient analysis method improving the freedom degree rolling stability and belongs to the technical field of control in the rolling process. By means ofthe method, the recessive relation between the rolling force and the tension and the rolling speed is obtained, the speed limit value is compared with the combination of the field practice, the speedlimit value is equally divided, each equally-divided speed value of outlet racks is obtained, and the speed value of each rack is obtained; then rolling force corresponding to different speed points and the allowed rolling force at the maximum speed are calculated, and the corresponding rolling force obtained after changing of the front tension and the rear tension of the racks is calculated; andfinally, the influence coefficient of the front tension and the rear tension of the racks are calculated. By means of the data statistic analysis method, the relation between the tension and the rolling force of all the racks is quantitatively analyzed, the tension adjusting suggestions of the racks are given, and the forceful support is provided for rolling stability of new products.

Description

technical field [0001] The invention relates to the technical field of rolling process control, in particular to a tension influence coefficient analysis method for improving rolling stability with degrees of freedom. Background technique [0002] Schedule Free Rolling (SFR, Schedule Free Rolling) was first proposed by Japan, with the purpose of using comprehensive flexible technology to ensure rigid production process connections and break the constraints of rolling plans on production. Domestic research on free-schedule rolling technology started relatively late, and the degree of freedom in rolling is related to equipment capabilities and process conditions, not unlimited freedom. [0003] In the actual production of cold tandem rolling, in order to improve rolling stability and obtain good product quality, a cold tandem rolling production line has clear requirements for the rolling plan. Considering the rolling model accuracy, self-learning efficiency and wear-in Strip ...

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Problems solved by technology

The above invention patents have carried out tension compensation for speed changes, but they have not introduced in detail the relationship between tension and rolling force when rolling different varieties and specifications, and cannot give clear guidance for tension adjustment in the initial rolling stage of new varieties.

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