A control system for rolling plate thickness

Abstract

The invention discloses a roll plate thickness control method which comprises the following steps: feeding a steel plate into a rolling mill and performing first-pass rolling; monitoring the thicknesses of the steel plate in real time by use of a thickness meter before and after rolling; when the thickness meter measures that thickness real-time data of the steel plate before rolling exceeds set data of thickness before rolling by 2% but less than 5%, performing decelerated production by use of a rolling mill unit; when the thickness meter measures that thickness real-time data of the steel plate before rolling exceeds set data of thickness before rolling by more than 5%, halting the rolling mill unit. A thickness meter control system is used for feeding back test data to an industrial control module; when the roll plate thickness is measured to be out of a set value range, the rolling mill realizes operation from automatic deceleration to stoppage, steel band breakage caused by thickness fluctuation is avoided, the production cost is effectively saved, and especially the roll plate thickness control method is capable of better monitoring the roll plate thickness and facilitating operations of operating personnel on the basis of the thickness meter.

Description

[0001] The patent application for the present invention is a divisional application of the Chinese invention patent application with the application number 201410640385.8 and the filing date of November 13, 2014. The invention title of the original application is "A Control Method and Control System for the Thickness of a Rolled Plate". technical field [0002] The invention relates to a steel strip production equipment, in particular to a control system for rolling plate thickness. Background technique [0003] When the existing reversible rolling mill is cold-rolled to produce steel strips, in the first pass of production, there is a thickness gauge before and after the rolling mill. The steel strip enters the rolling line, and the crew starts the first pass of rolling. During the process, when the thickness of the raw material steel strip fluctuates, it is easy to cause abnormal accidents such as broken strips and flying plates, which greatly increase the production cost ...

AI Technical Summary

Problems solved by technology

[0003] When the existing reversible rolling mill is cold-rolled to produce steel strips, in the first pass of production, there is a thickness gauge before and after the rolling mill. The steel strip enters the rolling line, and the crew starts the first pass of rolling. During the process, when the thickness of the steel strip of the raw material fluctuates, it is easy to cause abnormal accidents such as broken strips and flying plates, which greatly increase the production cost of the enterprise.

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