Control method for transverse integrative optimization of shape of cold rolled steel strip
An overall optimization and control method technology, applied in the field of cold-rolled strip steel, can solve problems such as inability to guarantee product shape requirements, high product defective rate, and large local shape deviation, and achieve the effect of improving the quality of shape control
Inactive Publication Date: 2013-11-20
WISDRI ENG & RES INC LTD
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And utilize above-mentioned plate shape statistics method, when plate shape data meets product plate shape requirement on statistics (such as ), it cannot guarantee that the shape of all strips meets the shape requirements of the product (in this case, δ i <10I are all established)
[0007] In the existing cold-rolled strip production process, technicians usually use the method of multivariable optimization control model to calculate the online adjustment amount of each plate shape control mechanism. The control method is: through the adjustment of the adjustment mechanism, the actual The square sum of the deviation between the shape and the target shape is the minimum value. Here, the shape deviation of each bar is treated equally, but the part with a large shape deviation has not been effectively dealt with, so the exit of the rolling mill is generated. The partial deviation of the plate shape in the plate shape is too large, and the product defective rate is high
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[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0039] The overall optimization control method for cold-rolled strip shape transverse direction based on the invention can be used in four-roller, six-roller single-stand or multi-stand cold tandem rolling units. The following takes a single-stand six-high rolling mill as an example. The products that can be rolled by the six-high rolling mill include ordinary plates, high-strength steel, some stainless steel and silicon steel. In this embodiment, medium and high-grade silicon steel is rolled, and the machine type is UCM rolling mill. The strip shape control means include roll tilting, positive and negative bending of work rolls, positive and negative bending of intermediate rolls,...
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The invention discloses a control method for transverse integrative optimization of the shape of a cold rolled steel strip. The method includes steps of A, measuring to obtain output shape parameters of the rolling mill; B, calculating an optimal regulating variable of a regulating mechanism according to the output shape parameters and target shape parameters; and C, adjusting the rolling mill according to the optimal regulating variable calculated by a calculating and controlling module. The control method for transverse integrative optimization of the shape of the cold rolled steel strip effectively solves the technical problems of large deviation of partial shape and high defective rate caused by use of the traditional shape control method, and the shape control quality of the cold rolled strip steel can be enhanced remarkably.
Description
technical field [0001] The invention relates to the field of cold-rolled steel strips, in particular to a method for overall optimal control of the shape of cold-rolled strip steel in transverse direction. Background technique [0002] With the rapid development of domestic and foreign strip product manufacturing industries, downstream users have increasingly high requirements for the shape quality of cold-rolled strip products, especially for industries such as high-end automobiles and high-end IT product manufacturing. Therefore, the quality of cold-rolled strip shape has become one of the main technical indicators for evaluating strip products. [0003] During the rolling process of cold-rolled strip steel, the strip steel will undergo obvious longitudinal elongation and transverse flow. When the transverse flow of strip steel is large, the longitudinal extension of each strip element in the transverse direction of strip steel will be inconsistent, and there will be elon...
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IPC IPC(8): B21B37/28
Inventor 解相朋赵菁
Owner WISDRI ENG & RES INC LTD