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

A control method and technology for oriented silicon steel, applied in rolling mill control devices, metal rolling, metal rolling, etc., can solve the problems of low control accuracy of strip transverse thickness uniformity

Active Publication Date: 2013-12-25
ANGANG STEEL CO LTD
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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

Method used

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

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Embodiment Construction

[0058] Such as figure 1 As shown, the position of the existing specific point is selected at 15mm from the edge, and the position of the reference point is selected at 115mm from the edge. Taking electrical steel with a thickness of 0.5mm rolled by a 1500mm UCMW rolling mill in a cold-rolled silicon steel plant as an example, the strip width is 1250mm, and the edge drop value is known EH =125μm, the distance from the edge drop start point to the strip edge is 40mm. Single side taper roller taper design such as image 3 As shown, the difference between the roll flattening amount of the taper part and the roll flattening amount of the roll body part PV =0-20μm, the taper of the Taper roller can be calculated according to the formula:

[0059]

[0060] According to the strip width SW=1250mm, the distance TSP=[1500-1250+2(EW+10)] / 2=175mm from the taper starting position to the edge of the roll can be determined.

[0061] In order to effectively evaluate the effect of edge...

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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...

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Application Information

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IPC IPC(8): B21B37/16
Inventor 张岩王军生刘宝权秦大伟柴明亮高健费静侯永刚宋君吴萌
Owner ANGANG STEEL CO LTD
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