Method for setting load distribution of finish rolling band steel

Abstract

The invention relates to a method for setting the load distribution of finish rolling band steel, belonging to the field of production control of finish rolling band steel, and solving the problems that the rolling force proportion of stands is large in fluctuation when the rolling condition is changed under the pressed-down distribution mode, and the thickness distribution of the stands is large in fluctuation when the rolling force model is large in deviation under the rolling force distribution mode. According to the invention, the pressed-down distribution mode and the rolling force distribution mode are combined; the rolling force distribution result is restricted by the distribution range determined by pressed-down distribution; the requirement that the rolling force of stands is decreased according to proportion is met while the thickness distribution fluctuation of the stands is reduced; the results of two distribution modes are gradually consistent, and the iterations are gradually reduced by learning a pressed-down rate learning table when the deviation of the rolling force model is small; and the fluctuation range of the pressed-down rate of the stands is effectively controlled through the pressed-down distribution amplitude limit when the deviation of the rolling force model is large. By adopting the method, the advantages of the two modes are combined and the shortages are overcome, so that the rolling schedule setting precision and the rolling stability of the finish rolling band steel are effectively improved.

Description

technical field

[0001] The invention relates to the field of production control of finish-rolled strip steel, in particular to a method for setting load distribution of finish-rolled strip steel. 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 Rolling regulations generally include reduction system, speed system, tension system, temperature system, etc. The reduction system refers to the distribution system of the reduction amount of each frame (or each pass), which is usually called load distribution or thickness distribution in the industry.

[0003] Load distribution is the core of the rolling procedure, which directly affects product qualit...

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