Automatic rolling mill roll gap level adjusting method

Abstract

The invention relates to the technical field of metal material processing, and discloses an automatic rolling mill roll gap level adjusting method. Pressure measuring heads arranged below the two sides of a rolling mill are included and used for detecting the rolling pressure and conducting difference value calculation on the detection value, and accordingly, the rolling pressure deviation basis reference is obtained; and the pressure measuring heads are further used for conducting real-time detection on the rolling pressure on the two sides of the rolling mill when a rolling piece enters thetail throwing stage, difference value calculation is conducted, and the real-time rolling pressure deviation is obtained. According to the automatic rolling mill roll gap level adjusting method, in the rolling piece tail throwing process, the rolling piece deflection direction is automatically recognized according to the roll gap deviation adjusting amount, the roll gap deviation adjusting amountis transmitted to an AGC control system, the roll gap deviation AGC cylinder stretching-out amount is added on the basis of the original AGC cylinder stretching-out amount, accordingly, automatic control over deflection in the rolling piece tail throwing process is achieved, rolling breakage, tail throwing, rolling waste and other accidents caused by rolling piece deflection are reduced, the operation rate of the rolling mill is increased, meanwhile, the yield of a rolling line is increased, and the production cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a method for automatic level adjustment of a roll gap of a rolling mill. Background technique [0002] In the hot continuous rolling process, the adjustment of the roll gap level of the rolling mill is one of the core issues of production control. By correcting the roll gap deviation on both sides of the rolling mill (operation side and transmission side), the deviation of the rolled piece and the shape of the strip are corrected. . [0003] Angang's 1780mm hot tandem rolling finishing mill is a seven-stand continuous rolling process. The finishing rolling process can be roughly divided into three stages: strip threading, stable rolling, and tailing. After the head of the rolled piece is threaded in the finishing mill, the strip enters a stable rolling stage due to the forced alignment of the looper tension. When the strip is thrown, because the looper enters ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the existing rolling mill roll gap adjustment method proposed in the background technology, the present invention provides a method for automatic level adjustment of the rolling mill roll gap, which has the advantages of automatic adjustment, high precision, and no hysteresis, and solves the above-mentioned background technology. questions raised in

Images