Method for confirming depressurizing distribution of single-rack reversible cold-rolling mill

Abstract

The invention provides a method for confirming depressurizing distribution of a single-rack reversible cold-rolling mill, which comprises the following steps: assigning a scale factor according to original data of a steel coil, equipment parameters and technological requirements of a rolling mill, and a given load, and then calculating rolling technological parameters according to a mathematical model of rolling technology; performing limitation check on equipment capacity during the calculating process; if the limitation is exceeded, performing correcting calculation on the transfinite technological parameters; taking different depressurizing distribution adjusting strategies for different technological conditions and performing iterative computations till an arithmetic convergence condition is met; if the maximum iterations of a system is exceeded or the arithmetic convergence condition is not met, displaying an error message on a frame and prompting an operator to modify total rolling times or calculate again after tension distribution, till obtaining satisfied depressurizing distribution; and lastly, storing the depressurizing distribution in a database so as to prepare data for a to-be-set computation model.

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 single-stand reversing cold rolling mill. Background technique [0002] Reduction allocation is an important part of rolling mill setting calculation in cold rolling. It calculates the optimal thickness distribution in a specific sense according to the characteristics of the rolled piece, the characteristics of the rolling mill and the 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 reduction distribution is to determine the reduction rat...

AI Technical Summary

Problems solved by technology

Using this method, the structure of the objective function and constraint conditions is complex, and the objective optimization function and constraint conditions constructed purely in theory are quite different from the actual working conditions of the rolling mill.

[0007] In addition, for on-line process control, the establishment of rolling reduction distribution objective function can be manually intervened by production operators, so the establishment of objective function and constraint conditions and their physical meaning are required to be as simple and clear as possible. In the process, the distribution of the reduction amount of each pass can be quickly intervened according to the actual production situation, but the use of this method depends on the operator's operating level and experience

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