Non-iterative twenty-high roll mill plate shape forecasting method

Abstract

The invention provides a non-iterative twenty-high roll mill plate shape forecasting method, and belongs to the technical field of metallurgical rolling. The method mainly comprises the following steps executed by a computer: collecting equipment parameters of a twenty-high rolling mill, characteristic parameters of typical rolled strips and corresponding rolling process parameters; dividing units and solving influence coefficients; forecasting the transverse distribution value of the pre-tensile stress of the strip during rolling; and strip outlet plate shape transverse distribution during rolling is forecasted. According to the method, the strip plastic deformation model and the roll system elastic deformation model are integrated into a unified linear equation set, direct solving is achieved, and no iteration is needed. Two calculation examples show that the calculation result of the non-iterative twenty-high roll mill plate shape forecasting method is well matched with that of a model coupling method, and the calculation speed is increased by about 10 times.

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