A method and device for controlling the thickness of a hot-rolled strip, an electronic device and a medium

CN116603870BActive Publication Date: 2026-06-26BEIJING SHOUGANG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING SHOUGANG CO LTD
Filing Date
2023-05-13
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

During hot rolling, the high temperature at the tail end of the slab leads to a low thickness hit rate at the tail end of the finished product, and traditional control methods cannot effectively solve the problem of thin tail thickness.

Method used

By acquiring information on the steel grade of the strip and the rolling speed of the finishing mill, the strip ejection speed and rate are determined, and the strip ejection process at the tail end is controlled to keep the tail end temperature within a preset temperature threshold. Combined with the bite speed compensation of the roughing mill and the roll gap control of the finishing mill, the temperature and thickness of the tail end are optimized.

Benefits of technology

It improves the hit rate of strip thickness at the tail end, enhances the consistency of thickness at the head and tail, improves the quality of finished products, and avoids downstream welding difficulties and strip breakage risks.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116603870B_ABST
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Abstract

The application discloses a kind of control method, device, electronic equipment and medium of hot-rolled strip thickness, the method includes: obtaining the steel grade information of strip steel and the rolling speed of finishing mill group to strip steel;Determine the speed of steel throwing of the tail section of strip steel based on the steel grade information by finishing mill group;Based on the rolling speed, the speed of steel throwing and the preset conversion time, the speed of steel throwing rate of finishing mill group is determined, to reduce the rolling speed to the speed of steel throwing based on the speed of steel throwing rate;When tail section enters finishing mill group, the tail section of strip steel is thrown based on the speed of steel throwing, so that the temperature of tail section is within the preset temperature threshold value.The method can make the thickness of strip steel tail close to the target value of finished product, improve tail thickness hit rate.
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