Calibration method for roller gaps of rolling machine

Abstract

Disclosed is a calibration method for roller gaps of a rolling machine. The calibration method includes: resetting a magnetic scale and a press head of an AGC (automatic gauge control) of the rolling machine, leveling the roller gaps by pressure control, checking deviation of the roller gaps on the operating side and two driving sides of the rolling machine; stopping the rolling machine, closing the roller gaps, calibrating the rolling force of the rolling machine and resetting the roller gaps when the deviation of the operating side and the two driving sides of the rolling machine is normal; checking whether the sum of rolling force of the operating side and the driving sides of the rolling machine is smaller than the calibrated rolling force or not after the roller gaps are reset, checking whether the deviation of the rolling force of the operating side and the two driving sides of the rolling machine is normal or abnormal, leveling the roller gaps of the rolling machine again if the deviation of the rolling force is abnormal, then checking the deviation of the rolling force of the rolling machine again; resetting the roller gaps of the rolling machine and opening the same to the set value if the deviation of the rolling force is checked to be normal, thereby completing calibration. When in use of the calibration method for the roller gaps of the rolling machine, calibration time is saved, the accident lasting and equipment fault due to failure of calibration are reduced, and operation rate and precision in production are increased.

Description

technical field [0001] The invention relates to the technical field of rolling mill control in the metallurgical industry, in particular to a calibration method for rolling mill roll gaps. Background technique [0002] In the metallurgical industry, hot-rolled thin plates are generally composed of 6 or 7 finishing mills. The finishing mill is the most critical equipment in the control of various indicators of the finished product. The key indicators such as the temperature and thickness of the finished product are controlled by the finishing mill. Yes, controlling these indicators requires a large number of parameter values ​​such as: the cooling water flow rate of each rolling mill, the speed of the rolling mill, the tension of the rolling mill, the rolling force of the rolling mill, etc. These parameters must be calibrated before rolling production to obtain a basic value. All the calibrated data are sent to the secondary control system controlled by the model. According ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the traditional calibration method cannot meet the technical requirements of some products, and to provide a calibration method for the redundant rolling mill roll gap of the last stand rolling mill

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