A method of calibrating the guide plate at the entrance side of the hot strip finishing mill

Abstract

The invention discloses a method for calibrating a hot continuous rolling plate strip finishing mill inlet side guide plate. The method comprises the steps that the automatic position of the inlet side guide plate is controlled to be the first width; the opening degree of the side guide plate, the first distance from the inner side of a balance block of the operation side to the inner edge of a side guide plate of the operation side and the second distance from the inner side of a balance block of the transmission side to the inner edge of a side guide plate of the transmission side are measured; if the opening degree of the side guide plate is larger than or equal to the first width and smaller than or equal to the sum of the first width and the preset first error, and the absolute valueof the difference of the first distance and the second distance is smaller than or equal to the preset second error, calibration is not executed; and if not, the opening degree, controlled by the automatic position, of the operation side and the opening degree, controlled by the automatic position, of the transmission side are calibrated. The technical problem that in the prior art, as for calibration for a finishing mill inlet side guide plate, the centering degree cannot meet the standard, and thus rolling accidents frequently occur is solved; and the technical effects that the centering degree of the finishing mill inlet side guide plate is increased, the rolling accidents are reduced, and the rolling stability is improved are achieved.

Description

technical field [0001] The invention belongs to the technical field of control in the metallurgical industry, and in particular relates to a method for calibrating the guide plate on the entrance side of a hot continuous strip finishing mill. Background technique [0002] In the metallurgical industry, the hot strip rolling process generally includes a finishing mill, which is the most critical equipment and affects various control indicators of the finished product. The finishing mill generally includes work rolls, back-up rolls, roll adjustment devices, entrance side guide plates, loopers, etc. Among them, the finishing rolling unit includes a plurality of stands, and each stand includes an upper work roll and a lower work roll for rolling strip steel, and side guide plates, loopers, etc. are respectively arranged on both sides of the entrance of each stand. Located before the guide plate on the entrance side; the looper is a device used to support the strip steel, form a...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for calibrating the guide plate at the entrance side of the finishing mill for hot continuous strip rolling, which solves the problem in the prior art that the calibration of the guide plate at the entrance side of the finishing mill does not meet the standard due to the existing alignment, which leads to frequent rolling accidents question

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