Method for designing and matching roll shape of continuous annealing temper mill

Abstract

The invention discloses a method for designing and matching the roll shape of a continuous annealing temper mill. The method comprises the following steps of: for the specification of a main roll, collecting and counting a large number of process parameters, actually measuring sheet shape data at site, and analyzing the sheet shape quality problem of different products; providing a sheet shape target on the design of a roll shape for the requirements of different product users on the sheet shape quality, wherein the width of strip steel is taken as the fundamental quantity in the optimizationprocess; selecting different strip steel widths; and designing a roll shape optimization curve which can synchronously meet different strip steel width specifications and different varieties of steels through the finite element simulation of working condition. By the technical scheme, the sheet shape quality of automobile sheets, household appliance sheets and semi-process electrical steel can beremarkably improved, the precision requirements of users on sheet shape indexes of different products are met, and good economic benefit is created. The stability of rolling is improved, the sheet shape quality of the products is improved, and the method has actual promotion and application value.

Description

technical field [0001] The invention belongs to the technical field of metallurgical industry production, and relates to plate rolling process equipment. More specifically, the invention relates to a roll profile matching design method for a continuous annealing and tempering mill. Background technique [0002] As the subsequent process of cold-rolled annealed sheet, the smoothing process is very important in processing quality. After the bell annealing treatment of the strip steel, there are some problems in the shape quality of the strip, such as edge waves, middle waves and scoops. How to improve the shape quality by optimizing the roll shape is of great significance. [0003] At present, Maanshan Iron and Steel No. 1 steel mill is a single-stand four-high rolling mill, without work roll shifting, and without a shape meter at the exit. The operator can only adjust the process and improve the shape through visual methods based on experience. There are the following proble...

AI Technical Summary

Problems solved by technology

[0004] 1. No work roll shifting, no shape meter, closed-loop control cannot be realized, and there are design defects;

[0005] 2. When the temper mill rolls strips with jumping widths, the rolling process is unstable, the roll shape adaptability is poor, and the plate shape defects increase;

[0006] 3. When the force of positive bending roll reaches the limit, the wave shape defect at the edge still cannot be eliminated

[0007] The tempering machine has quality problems when rolling automobile steel plates, home appliance steel plates, and semi-process electrical steel, and the quality problems of the plate shape after the cover cannot be improved by adjusting the process by the operator;

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