METHOD FOR CONTROLLING EDGE DROP OF ROLLING MILL

摘要

PURPOSE:To enable realizing the maximum capacity for controling edge drop in the permitted limit without generating defective shape. CONSTITUTION:In a rolling mill where tapered work rolls 2 are shifted in the width direction of a rolled stock 5 with a control part 8 for shifting the position of work roll, an edge drop meter 6 is provided on the outlet side of the rolling mill. At the time of executing edge drop control by correcting the shifted position of work roll based on the difference between the measured value of that edge drop meter 6 and the target value of edge drop, a shape detector 7 for rolled stock 5 on the outlet side of the above-mentioned rolling mill is provided. When the detected value lambdai (i=1-n) of that shape detector 7 is not in the permitted limit of shape of lambda min =i=lambda max, the correction of shifted position of work roll is interrupted.