Thickness control method in consideration of the dynamic characteristics of the rolling mill

摘要

PROBLEM TO BE SOLVED: To provide a method of controlling plate thickness in a rolling mill, by which the plate thickness of a rolled stock is brought close to the target value surely.SOLUTION: In the method of controlling the plate thickness for controlling the roll gap of the rolling mill for rolling the rolled stock, the variable value &Dgr;P' of the rolling load which satisfies a gauge meter expression is calculated while taking the dynamic characteristic into consideration. After that, by using the calculated variable value &Dgr;P' of the rolling load of the dynamic characteristic, the amount of correction &Dgr;S of the roll gap is determined and the obtained amount of correction &Dgr;S of the roll gap is applied to the rolling mill.