Method for inhibiting continuous hot-dip galvanizing and aluminizing unit coiling overflow edge

Abstract

The invention relates to an inhibition method for continuous hot-dip galvanizing and aluminizing unit coiling overflow edge. The inhibition method for the continuous hot-dip galvanizing and aluminizing unit coiling overflow edge is aimed to solve the problem that an existing hot-dip galvanizing and aluminizing unit has serious product defects in a coiling overflow situation. The inhibition method for the continuous hot-dip galvanizing and aluminizing unit coiling overflow edge includes that firstly, an outlet section controller reads the switch time of a trimming coiling device from an alignment mode to an automatic mode, a set threading speed at the outlet section and strip steel thickness and calculates the running length of the strip steel during a non-control state period and the winded circle number of the strip steel on the coiling machine under the non-control state; secondly, the outlet section controller reads the roller diameter of a NO.9 tension roller, the sampling value of a coder, a gear ratio and a system sampling time, calculates the accumulated running distance of the head of the strip steel at the outlet section in the threading process and sets conditions for controlling actions of a trimming coiling device detection unit; finally, when the ratio of the tension detection value to the set value is higher than a preset ratio, the trimming coiling device is controlled to switch to the automatic mode. The inhibition method for the continuous hot-dip galvanizing and aluminizing unit coiling overflow edge is suitable for industrial automatic control.

Description

technical field [0001] The invention belongs to the field of industrial automation control, and in particular relates to a method for suppressing the coil overflow edge of a continuous hot-dip galvanized aluminum unit. Background technique [0002] Existing data and technology information retrieval of well-known domestic steel mills show that the quality defects of cold-rolled products are divided into three types: shape overflow, weld overflow, and coiling tension is too small or fluctuating according to their causes. The reasons for the former two are mainly due to the poor shape quality of the hot-rolled incoming materials and two different specifications of products before and after the weld, while the latter is mainly caused by the imperfect design of the strip tension control program during coiling. The measures to be taken are that when the overflow edge is found to be serious, the speed should be manually reduced first, and the manual centering adjustment should be a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing hot-dip galvanized aluminum unit causes serious product defects when sending coil overflow

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