Edge drop control method of cold-rolled non-oriented silicon steel

Abstract

The invention provides an edge drop control method of cold-rolled non-oriented silicon steel. The edge drop control method includes that a cold rolling five frame and all six roller rolling mill is utilized as an object; an objective function is that the horizontal thickness difference of the non-oriented silicon steel is minimum; the complete set of working roller forecast and feedback and working roller bending compensation control method for edge thinning control of the non-oriented silicon steel is established through introduction of an efficiency effected function array. According to the edge drop control method of the cold-rolled non-oriented silicon steel, the original control device is fully utilized; the maintenance is easy; the technology import capital investment is saved; meanwhile the influence on the flatness control accuracy can be effectively reduced and the horizontal thickness control accuracy of the non-oriented silicon steel can be improved to enable the horizontal thickness difference to decrease from 25 microns to 8 microns below and accordingly the laminated rate of the non-oriented silicon steel finished product and the qualified rate of the quality of the finished product are improved and a new solution is provided to adapt to the edge drop control presetting and feedback of industrial application.

Description

technical field [0001] The invention belongs to the field of steel rolling automatic control, in particular to an edge drop control method for cold rolling non-oriented silicon steel. Background technique [0002] Cold-rolled silicon steel, as a high-efficiency, energy-saving, and large-volume excellent soft magnetic functional material that is prioritized by the country, is the top priority in the adjustment of the variety structure of my country's iron and steel industry. It is widely used in fields such as electric power, electromechanical, post and telecommunications, and military industry. Electromagnetic properties and lateral thickness difference are important quality indicators of cold-rolled non-oriented silicon steel. The lateral thickness difference determines the lamination coefficient of silicon steel. Therefore, in order to improve the efficiency of motors and transformers, users not only have strict requirements on the electromagnetic properties of silicon ste...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an edge reduction control method suitable for cold-rolling non-oriented silicon steel in a universal crown mill with the function of traversing the middle roll and work roll, that is, UCMW (Universal Crown mill with Middle and Work shifting roll). Solve the problem of low control accuracy of strip transverse thickness uniformity in the production process of silicon steel, thereby increasing the lamination rate of non-oriented silicon steel, and achieving the purpose of improving the qualified rate of finished cold-rolled silicon steel

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