A method for intelligent roll shifting of work rolls in hot continuous rolling mill

Abstract

The invention relates to an intelligent roller channeling method for working rollers of a hot continuous rolling mill. The method is characterized by comprising the following steps: (1) a roller channeling model is designed; (2) a parameter configuration scheme is selected; and a rolling period segmentation number is selected according to the length of a rolling period and rolling stable conditions; and (3) an engineer interface function is achieved; an intelligent roller channeling function is added in an engineer frame; the kilometer number of each node and the gradient of each section in the rolling period can be changed; and a change curve of a changed roller channeling section along with prolonging of the rolling period can be displayed. In the intelligent roller channeling method forthe working rollers of the hot continuous rolling mill, through building of a mathematical model between the roller channeling section and the rolling period, dynamic change of the roller channelingsection along with prolonging of the rolling kilometer number is realized; in earlier stage of the rolling period, the plate shape is instable, the roller channeling section is gradually enlarged from0; in medium stage, the hot roller shape is stable, the wear is lower, the plate shape is stable, and roller channeling can be performed in a big section; and in later stage, along with acute wear, the plate shape is gradually instable, and the roller channeling section is gradually reduced.

Description

technical field [0001] The invention relates to the field of strip steel production in hot rolling mills, in particular to an intelligent roll shifting method for working rolls in hot rolling mills. Background technique [0002] The work roll is a key part in contact with the strip in the hot continuous rolling mill, and it is also a loss part. The loss of the work roll is mainly due to the relative motion between the roll and the strip. Due to the inhomogeneity of the flow velocity of the strip along the width direction, the distribution of the rolling force and the temperature distribution of the roll, the distribution of the wear of the roll along the roll body is Inhomogeneous, generally the wear of the roll near the edge of the strip is large, and the wear of other positions is small. Modern hot tandem rolling mills are generally equipped with work roll shifting function. In actual rolling, in order to uniform roll wear, the position of work rolls will change continuou...

AI Technical Summary

Problems solved by technology

Most roll shifting strategies are uniform shifting in fixed roll shifting intervals, and the influence of different roll shifting intervals on rolling stability is not well considered. However, the early, middle and late roll shifting intervals have different requirements for roll shifting intervals. The existing work roll shifting method can not wear uniformly and can ensure rolling stability

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