Anti-tail out automatic control system of hot continuous rolling thin strip steel

Abstract

The invention discloses an anti-tail out automatic control system of hot continuous rolling thin strip steel, mainly comprising a signal detection device, a programmable logic controller (PLC) and a control actuating mechanism; the roll forces on both sides detected by a roll force sensor are compared in the PLC to obtain a deviation signal, after being processed by a signal filtering processing unit, the deviation signal subtracts the roll force deviation value maintained by a current rack when a previous rack throws steel, and then an initiating threshold value and action direction are judged through a judging unit for regulating the initiating threshold value and a judging unit for regulating the action direction, when the deviation value is up to the threshold value, the action direction can be judged out according to the positive and negative of the difference value, in addition, under the condition of satisfying linkage, a roll seam horizontal regulation signal is output throughan UP or DOWN terminal within the range of horizontal regulation amplitude limiting value of the roll seam between the linkage and a protection unit to control the actuating mechanism to control the horizontalness of the roll seam. In the invention, the adaptation of a rolling mill system at the tail end of strip steel is improved, thereby reducing operating trouble of strip steel, improving the stability of strip steel rolling process, and solving the problem that artificial manual regulation is not in time.

Description

technical field [0001] The invention belongs to the technical field of metallurgical electric automation control, in particular to an automatic control system for preventing tail drift of hot continuous rolling thin strip steel. Background technique [0002] The stability of the hot-rolled strip rolling process directly affects the quality of the strip product. During the production process, crescent defects at the end of the hot-rolled strip, deviation of the strip, and collision between the end of the strip and the guide plate device The interruption of the production process is an important reason for the low stability of the strip rolling process. The final phenomenon is the flying of the strip tail, commonly known as "flicking". Strip tailing in hot continuous rolling mill is an abnormal production phenomenon, which usually occurs in the production of thin gauge, hard material, wide rolled piece and silicon steel. When tailing phenomenon occurs in production, especially...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an automatic control system for hot continuous rolling thin strip anti-flick, which can automatically adjust the roll gap level value of the stand according to the variation of the rolling force deviation of the stand, and control the run-off of the tail of the strip. Offset, reduce the operation failure of the strip, improve the stability of the strip rolling process, and solve the problem of untimely manual adjustment

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