Method for determining five stand tandem cold mill depressing distribution

Abstract

The invention provides a method for determining five stand tandem cold mill depressing distribution. The method comprises steps of designing rolling strategy modes and various grading forms which are suitable to a tandem cold mill in accordance with process requirements of the tandem cold mill and original data of coils, selecting data of grading forms and device parameters of the mill of a device capability form in accordance with selected depressing distribution rolling strategy modes and depressing distribution proportionality coefficients, setting up a depressing distribution calculation model, calculating rolling process parameters by using a rolling process mathematical model, solving a non-linear equation model through a quasi-Newton method, calculating obtained satisfied depressing distribution, storing the depressing distribution data to a database, and preparing data for setting a calculation model. According to process properties of the tandem cold mill, the proper rolling strategy modes are provided, the depressing distribution calculation model is set up, the principle is simple, the implementation is easy and the operation is convenient.

Description

technical field [0001] The invention relates to the field of metallurgical automation, in particular to a method for determining the reduction distribution of a five-stand continuous cold rolling mill. Background technique [0002] Cold rolling mill reduction distribution is an important part of rolling mill setting calculation in cold rolling rolling. It calculates the optimal thickness distribution in a specific sense according to strip characteristics, rolling mill characteristics and process requirements. Reasonable reduction distribution can not only effectively utilize the existing equipment, give full play to the potential of the equipment, improve the product quality of the rolling mill, but also reduce the rolling energy consumption. Therefore, it is of great practical significance to find a reasonable calculation method for the reduction distribution for actual production. [0003] The main function of the reduction distribution is to determine the total reduction...

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Problems solved by technology

[0005] The above two methods have their own advantages and disadvantages. The first method is simple, stable, and easy to understand, but lacks flexibility. At the same time, the data in the table largely depends on the technical level and experience of the craftsmen and operators. Ideal; the calculation result of the second method is the best reduction distribution, but the structure of the objective function and constraint conditions is complicated, the calculation process is complicated, the optimization calculation time is long, and the solution is difficult

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