METHOD FOR CONTROLLING SHEET PROFILE IN TANDEM ROLLING EQUIPMENT

PROBLEM TO BE SOLVED: To provide a control method of a sheet profile in tandem rolling equipment by which the target sheet crown on the outlet side of the tandem rolling equipment is secured and thickness quality over the entire width is guaranteed in rolling using the tandem rolling equipment in which rolling mills provided with at least one actuator are arranged in tandem. SOLUTION: The ratio (Bi/Ai) of the influence coefficient Bt of an acutuator which affects the edge drop on the outlet side of the rolling equipment to the influence coefficient Ai of an actuator which affects the sheet crown on the outlet side of the rolling equipment is determined and the controlled variable of the sheet crown with the actuator of a rolling mill the ratio of which is relatively larger is made relatively larger.