Vertical roller gap calibrating method

Abstract

The invention relates to a vertical roller gap calibrating method. The method comprises following steps: according to the central line of a vertical roller inlet rack roller and the central line of a vertical roller outlet rack roller, the rolling central line is determined; the measuring roller gap of an operation side vertical roller is measured, that is, the shortest distance between the rolling central line and the operation side vertical roller is obtained; and the measuring roller gap of a drive side vertical roller is measured, that is, the shortest distance between the rolling central line and the drive side vertical roller is obtained. According to the measuring roller gap of the operation side vertical roller, the measuring roller gap of the drive side vertical roller and the calibrating formula, a calibration roller gap of the operation side vertical roller after the vertical roller is replaced and a calibration roller gap of the drive side vertical roller after the vertical roller is replaced are determined; and according to the vertical roller gap calibrating method, calibration is accurate, the method is easy, time is saved, the human intervention factor can be reduced, the product quality can be obviously improved, and the large camber capable of generating the width and the vertical roller area is avoided.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method for calibrating roll gaps of vertical rolls. Background technique [0002] The width and camber of the hot-rolled strip have always been important indicators that affect product quality, and the accuracy of the vertical roll gap is an important factor that directly affects the width of the strip and the camber. The accuracy of the vertical roll mill is mainly determined by the calibration method of. The previous calibration method used the center line of the lower middle beam as the center line of the vertical roll. Since the middle beam is a detachable equipment, there is a deviation between the rolling center line and the lower middle beam center line due to vibration and wear during the long-term production process. , resulting in a certain error between the operating side and the driving side during calibration, and the need to manually re-measure the calibrat...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for calibrating the roll gap of vertical rollers, which solves or partly solves the problem in the prior art that the center line of the lower middle beam is used as the center line of vertical rollers, which causes a certain error between the operation side and the driving side when the calibration is performed. Technical problems, achieved accurate calibration, simple method, time saving, reduced human intervention factors, significantly improved product quality, and avoided technical effects caused by the width and large camber in the vertical roll area

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