APPARATUS FOR CONTROLLING THICKNESS AND CROWN OF ROLLING MACHINE

摘要

Plate gauge and crown are controlled in a rolling mill where conventional screwdown position is used to establish initial roll gap and the bending force reference used to control crown is employed to correct gauge deviations resulting therefrom. Hydraulic push-up cylinders are employed to maintain a roll gap which is held constant in one mode of operation with changes due to mill stretch and which is controllably varied in a second mode to provide proper output gauge.