Control method for dynamic setting of crown wedge of cold-rolled silicon steel

Abstract

The invention relates to a cold-rolled silicon steel convexity and wedge shape dynamic setting control method. The method includes the steps that (1) a convexity and wedge shape preset control model is built; (2) the roller bending and pressing inclination of a rack S1 is adjusted; (3) the roller bending and pressing inclination of a second rack S2 and the roller bending and pressing inclination of a third rack S3 are adjusted; and (4) a convexity and wedge shape closed loop control model is built, wherein convexity and wedge shape closed loop control is achieved by adjusting the roller bending and pressing inclination of the rack S1 according to the convexity and wedge shape deviation actually measured by an outlet edge dropping instrument of a fifth rack S5, and please see the computational formula in the specification, wherein deltaF<w,1>=W<5m,a0>*K<ws,5>. According to the cold-rolled silicon steel convexity and wedge shape dynamic setting control method, convexity and wedge shape dynamic setting control over rolling mill inlet and outlet instrument detecting strip steel fracture surface measured data is used, and influences of the convexity and wedge shape deviation on the final intra-plate deviation quality are effectively restrained; and the outlet edge dropping instrument is used for cooperating with feedback control, the strip steel transverse thickness uniformity control accuracy in the cold-rolled silicon steel production process is improved, the lamination rate and the permeability of silicon steel products are accordingly improved, and the aim of improving the finished product quality and market competitiveness is achieved.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a method for dynamically setting and controlling the crown wedge shape of cold-rolled silicon steel suitable for a five-roll mill. Background technique [0002] In recent years, due to the huge market demand for home appliances, automobiles, electronics and other products, the strip production industry has developed rapidly. At the same time, as most strip users shift from low-end to high-end, higher requirements are placed on the cross-sectional shape of the strip. For the production process of cold-rolled silicon steel, the lateral thickness difference is an important quality index of silicon steel products, which determines the lamination coefficient of silicon steel. In addition to the requirement of edge thinning to achieve a certain accuracy, the shape control of the exit section also plays a decisive role. , especially the crown and wedge quality of strip steel also...

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Problems solved by technology

[0004] The invention provides a dynamic setting control method of the crown wedge shape of cold-rolled silicon steel. The crown wedge shape dynamic setting control method of the actual measurement data of the steel strip section is detected by the crown meter at the entrance and exit of the rolling mill, and the deviation between the crown and wedge shape of the incoming material is effectively suppressed. The impact of poor quality on the same plate at the end; the use of the outlet edge drop meter with feedback control solves the problem of low control accuracy of the strip transverse thickness uniformity in the production process of cold-rolled silicon steel, so as to improve the lamination rate and magnetic permeability of silicon steel products. To achieve the purpose of improving the quality of finished products and market competitiveness

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