Calibration method and device of centering precision of side guide plates of finishing mill

Abstract

The invention relates to the technical field of hot milling, particularly to a calibration method and device of the centering precision of side guide plates of a finishing mill. The method comprises the following steps: measuring a distance A between the inner side of a first guide plate and the inner side of a first memorial arch; measuring a distance B between the inner side of a second guide plate and the inner side of a second memorial arch; calculating the value of A-B; and calibrating the opening value for the first guide plate, and the opening value for the second guide plate. The device comprises first distance measuring equipment, second distance measuring equipment and treating equipment, wherein the first distance measuring equipment is connected with the treating equipment; the second distance measuring equipment is connected with the treating equipment; the treating equipment is used for calculating the value of A- B, and calibrating the opening value for the first guide plate, and the opening value for the second guide plate. Through the adoption of the calibration method and device of the centering precision of the side guide plates of the finishing mill, provided by the invention, the accurate calibration of the first guide plate and the accurate calibration of the second guide plate are realized, so that the actual centering precision of the side guide plates meets site production requirements, and the stability of strip threading in finishing milling and tail throwing in finishing milling is improved; therefore, milling accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of hot rolling, in particular to a calibration method and device for centering accuracy of side guide plates of a finishing mill. Background technique [0002] The entrance of each finishing mill of the hot continuous rolling finishing unit is equipped with a guide device. The main structure of the guide device is composed of a side guide plate and an upper guard plate. The side guide plate consists of the first guide plate (ie, the operating side guide plate), the second guide plate (that is, the drive side guide plate) and an intermediate beam. The opening and closing of the first guide plate and the second guide plate are respectively controlled by a separate hydraulic cylinder, and each hydraulic cylinder must be equipped with a position control device. The middle beam is located at a fixed position between the first guide plate and the second guide plate (generally at the position of the rolling center...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention solves the technical problem of inaccurate calibration of the side guide plate in the prior art by providing a calibration method and device for the centering accuracy of the side guide plate of the finishing mill, and realizes accurate calibration of the opposite side guide plate

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