Finish rolling strip steel load distribution setting method

Abstract

The invention relates to a finish rolling strip steel load distribution setting method and mainly aims to solve the technical problem that in the existing depressing distribution mode, the rolling force proportions of all racks greatly fluctuate when the rolling condition changes, and in the rolling force distribution mode, the thickness distribution of all racks greatly fluctuates when the deviation of a rolling force model is large. The finish rolling strip steel load distribution setting method comprises the following steps: S1, calculating the thickness distribution of carrying out finish rolling on all racks according to the depressing distribution mode, taking out the reduction rate distribution coefficient of each rack from a depressing distribution coefficient graph, and obtaining the reduction rate and outlet thickness of depressing distribution according to the reduction rate distribution coefficient of each rack; S2, taking the depressing distribution result as an initial value, and carrying out iterative computation on rolling reduction of each rack according to the distribution mode of rolling force until the proportion of the rolling force meets the target requirement; and S3, carrying out amplitude limiting treatment and relativization calculation on the distribution result of the rolling force mode. With adoption of the finish rolling strip steel load distribution setting method, the setting precision and rolling stability of the rolling schedule of finish rolling strip steel are improved.

Description

technical field [0001] The invention relates to the field of production control of hot continuous rolling strips, in particular to the field of production control of finish-rolled strips, in particular to a method for setting load distribution of finish-rolled strips. Background technique [0002] In hot strip rolling mills, the formulation of rolling regulations plays an important role in improving product quality. Whether it is reasonable or not has a great impact on the quality of products, the difficulty of adjusting rolling equipment, the reliability of unit operation and the production process. have a direct impact on the stability of the Load distribution is the core of the rolling procedure, which directly affects product quality such as shape and thickness accuracy. Load distribution also has an important impact on rolling energy consumption, roll consumption, production process stability and operating rate and other indicators. Starting from the empirical table me...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a load distribution setting method for finishing strip steel, which mainly solves the large fluctuation of the rolling force ratio of each stand when the rolling status changes in the existing reduction distribution mode, and the rolling force distribution mode in the rolling force distribution mode. When the deviation of the force model is large, the technical problem of the large fluctuation of the thickness distribution of each stand, so as to improve the precision of the rolling schedule setting and rolling stability of the finished strip steel

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