Early warning method of head deviation of rough-rolled intermediate billet in steckel mill line

Abstract

The invention provides an early warning method of head deviation of a rough-rolled intermediate billet in a steckel mill line and belongs to the technical field of metallurgy automatic control. The method comprises the steps of calculating the mean value Davg of center line deviations D of an intermediate billet within N mm and the mean values Sosavg and Sdsavg of the distances Sos and Sds from the operating side and the driving side from corresponding sides of a steckel mill reeling furnace rabbet after removing the flying shear head set shearing length M mm from the head of the intermediatebillet according to the billet center line deviation and width deviation measured by a rough rolling outlet width gauge at the final pass; comparing the Davg with Dpermit, and giving a warning when the distance that the center line of the head of the intermediate billet ejected by an HMI deviates towards the operating side is greater than Dpermit or the distance that the center line of the head ofthe intermediate billet deviates towards the driving side is greater than Dpermit; and comparing Sosavg with Spermit, and giving a warning when the distance from the operating side where the head ofthe billet is ejected to the side of the rabbet is less than Spermit or when the distance from the driving side where the head of the billet is ejected to the side of the rabbet is less than Spermit.Through the early warning method, the situation that a steckel mill produces waste steel due to deviation of the head of the intermediate billet can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of metallurgical automation control, in particular to an early warning method for deviation of the head of a rough rolling intermediate slab in a coil rolling line. Background technique [0002] The deviation of the intermediate billet in rough rolling has always been a problem in hot continuous rolling production, especially when the coil is put into the coil rolling line, if the deviation of the intermediate billet head is serious, the head of the intermediate billet cannot enter the coiling How to give early warning information in time to take effective measures to avoid steel scrap in the coil rolling mill is a problem that needs to be solved in the coil rolling line. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an early warning method for deviation of the head of the rough rolling intermediate billet in the steckel rolling line. [0004]...

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Problems solved by technology

[0002] The deviation of the intermediate billet in rough rolling has always been a problem in hot continuous rolling production, especially when the coil is put into the coil rolling line, if the deviation of the intermediate billet head is serious, the head of the intermediate billet cannot enter the coiling The notch of the furnace, resulting in scrap steel, how to give early warning information in time after the intermediate billet deviation is found, so as to take effective measures to avoid scrap steel in the coil rolling mill is a problem that needs to be solved in the coil rolling line

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