A method and device for early warning of strip deviation on a cold-rolled galvanizing line

Abstract

The embodiment of the invention discloses an early-warning method and device for deviation of strip steel on a cold rolled galvanizing line. The method comprises the following steps: acquiring strip steel position deviation values from N furnace-front deviation correcting sensors in M furnace-front deviation correcting sensors when the strip steel runs on the cold rolled galvanizing line so as to obtain N strip steel position deviation values of N positions in front of an annealing furnace; determining whether the N strip steel position deviation values are within the corresponding preset deviation range; and if any one of the N strip steel position deviation values is beyond the corresponding preset deviation range, sending out strip steel deviation early-warning information, wherein for the N furnace-front deviation correcting sensors, preset deviation ranges are correspondingly set. With the adoption of the method and the device, the technical problem of low capacity of correcting the deviation in the annealing furnace on the cold rolled galvanizing line can be solved; the deviation degree of the strip steel in the annealing furnace can be reduced, and moreover, the strip steel deviation in the annealing furnace can be timely handled, so that stable travelling of the strip steel in the annealing furnace is ensured, and as a result, the galvanizing line output and the product quality can be improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a strip deviation warning method and device on a cold rolling galvanizing line. Background technique [0002] The annealing furnace is an important equipment of the cold rolling galvanizing line, and the stable operation of the strip steel in the furnace is the basic requirement to ensure the output and product quality of the galvanizing line. The deviation of the strip in the furnace refers to the phenomenon that the centerline of the strip deviates from the centerline of the furnace roll during operation. [0003] In the prior art, by setting a deviation correction device in the annealing furnace, the deviation correction device includes a deviation correction sensor and a deviation correction frame to correct the deviation of the strip steel in the annealing furnace. However, if the deviation correction frame reaches the limit, it will trigger a shutdown, from The output i...

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Problems solved by technology

[0004] In view of the above problems, the embodiment of the present invention provides a strip deviation warning method and device on a cold-rolled galvanizing line, which can give an early warning to the strip deviation before the strip enters the annealing furnace, so as to solve the existing Poor rectification ability in the annealing furnace on the rolling galvanizing line technical problem

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