Safety calibration method for roll gap of hot rolling mill

Abstract

The invention discloses a safety calibration method for a roll gap of a hot rolling mill. The method specifically comprises the following steps: sequentially verifying the position of a stepped plateof the rolling mill, elevation data of the rolling mill and rolling force data of the top and bottom of the rolling mill, and completing calibration of the roll gap of the rolling mill after verification passes. Through a rolling mill calibration state detection program designed by a PLC system, in the rolling mill calibration process, man-made or equipment potential problems can be found according to actual conditions, and an automatic roll gap calibration program is immediately interrupted; the method is simple, practical and easy to implement on site; and potential problems of rolling millcalibration are rapidly detected, an equipment fault diagnosis basis is provided, malignant accidents caused by calibration are effectively reduced, the production safety in the industrial field is improved, and therefore economic benefits are remarkable.

Description

technical field [0001] The invention belongs to the technical field of rolling mill roll gap calibration, and more specifically, the invention relates to a method for safe calibration of hot rolling mill roll gap. Background technique [0002] At present, the iron and steel industry, especially the hot rolling manufacturing unit, organizes production according to the rolling production unit planning mode. In order to ensure the surface quality of the product and rolling stability, it is necessary to replace the work rolls of the rolling mill according to the rolling cycle. After replacing the work rolls, according to the matching roll diameter data, the rolling mill needs to perform automatic roll gap calibration again. After the calibration is completed, the rolling mill has the basic production conditions. [0003] The automatic calibration of the roll gap is a sequential control standard cycle process, that is, the theoretical calculation of the roll gap is performed acco...

AI Technical Summary

Problems solved by technology

[0003] The automatic calibration of the roll gap is a sequential control standard cycle process, that is, the theoretical calculation of the roll gap is performed according to the roll diameter data issued by the secondary system, and the calibration process of the automatic conditions of the rolling mill is carried out at the same time. However, in actual use, there have been Mismatched roll diameter data, or the position of the adjustment block of the elevation line of the rolling mill is abnormal, resulting in the rolling mill roll being broken during the calibration process of the rolling mill, or the internal mechanical equipment of the rolling mill being seriously damaged, resulting in serious accidents and huge losses

Images