Automatic control method for roll gap deviation of rough rolling R2 reversible mill

By constructing the adjustment interval number and comprehensively considering a variety of data, the automatic online control of the roll joint deviation of the rough rolling reversible rolling mill is solved, and the problem of insufficient automatic control efficiency and accuracy in the existing technology is improved, and the accuracy of sickle bending control is improved.

CN119702713AActive Publication Date: 2025-03-28SHANGHAI MEISHAN IRON & STEEL CO LTD
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Patent Information

Application Number
CN202311259128.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-27
Publication Date
2025-03-28
Estimated Expiration
2043-09-27

AI Technical Summary

Technical Problem

The prior art is difficult to achieve effective automatic control of roll joint deviation of rough rolling reversible rolling mills, resulting in invalid adjustment or incorrect adjustment, and operation depends on labor, and insufficient efficiency and accuracy.

Method used

By collecting the head and tail center offset data of the slab head and tail, side guide plate pressure data, etc. of each pass of the R1 and R2 rolling mill, the number of adjustment intervals is constructed, and comprehensively considered based on the incoming plate shape, the inter-pass plate shape and adjacent strip steel plate shape, the automatic online control of the roll joint deviation of the R2 roll mill is achieved.

Benefits of technology

The precise automatic control of the roll joint deviation of the rough rolling reversible rolling mill is achieved, reducing the heavy and repetitive labor of manual operations, and improving the accuracy of sickle bending control by about 10%.

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Abstract

The invention relates to an automatic roll gap deviation control method for a rough rolling R2 reversible mill. The automatic roll gap deviation control method comprises the steps of collecting data, setting the number of adjustment intervals, calculating and adjusting the first roll gap deviation adjustment amount, calculating and adjusting the second roll gap deviation adjustment amount, calculating and adjusting the third roll gap deviation adjustment amount and the like. According to the on-line automatic control method for the roll gap deviation of the rough rolling R2 reversible rolling mill, the roll changing unit of a working roll of the rough rolling R2 rolling mill is taken as a whole, and the number of adjustment intervals (namely the strip steel with the width, the width reduction amount and the thickness of an intermediate billet similar to each other) is constructed; actual data of slab head and tail center offset of each pass, pressure data of side guide plates on two sides of each pass and the like are collected, overall consideration and all-directional adjustment are performed according to the shape of a supplied material, the shape of a plate between the passes, the shape of an adjacent strip steel and the like, automatic control over the roll gap deviation of the rough rolling reversible mill is achieved, and meanwhile camber control precision can be improved by about 10%.
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