Method for determining edge drop control regulation efficacy coefficient of cold-rolled silicon steel

Abstract

The invention provides a method for determining an edge drop control regulation efficacy coefficient of cold-rolled silicon steel. By means of the method, a five-rack cold-rolled silicon steel single-taper work roller shifting rolling mill is used as a target, a minimum strip steel edge drop serves as a target function, a finite element analysis method for a silicon steel material is adopted, and by setting an elastic plastic material, arranging a contact boundary, dividing model grids, setting boundary conditions and working out N-R iteration nonlinearly, the edge drop control regulation efficacy coefficient for effectively and accurately calculating the roller shifting adjustment quantity is obtained. By adopting the method, the accuracy of the insertion adjustment quantity of a conical section of a work roller can be improved, the defect that the edge portion of strip steel is thinned is quickly and effectively controlled, the quality of finished cold-rolled silicon steel is improved, the rate of the average edge thinning value, smaller than or equal to 10[u]m, of silicon steel products can reach 100%, and the rate of the average edge thinning value which is smaller than or equal to 8 microns can reach 98.5%. According to the method, original control equipment can be used, maintenance is easy, and investment of technology import funds is reduced.

Description

technical field [0001] The invention belongs to the field of cold-rolling process control, and in particular relates to a method for determining the efficiency coefficient of edge drop control and regulation of a single-taper work roll shifting mill for cold-rolling 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. The lateral thickness difference is an important quality index of silicon steel products, which determines the lamination coefficient of silicon steel. Therefore, in order to improve the efficiency of motors and transformers, the requirements for the lateral thickness difference of silicon...

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Problems solved by technology

[0004] There are almost no patents and literatures on the process of regulating the efficiency coefficient of edge drop control at home and abroad. The regulation efficiency coefficient is often proposed as an important factor in strip shape control and has been introduced in related literature, but as a process for adjusting the efficiency coefficient in edge drop control The method has not yet been introduced in the relevant literature, and it can be said that it has always been the core technology and has not been made public.

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