METHOD AND APPARATUS FOR CONTROLLING ELONGATION IN TWO-STAND SKIN PASS MILL

摘要

The present invention relates to a steel sheet elongation control apparatus and control method for a two stand rolling mill, securing More specifically, the target elongation by applying a speed compensation value of the master speed value after the first and second rolling using a pressure Harvey individually which can be so, to a control apparatus of a second steel sheet elongation temper rolling mill stand and a control method. Steel elongation control apparatus for a two stand rolling mill in accordance with the present invention, the master speed value receives the (MS0), the inlet feed back the bridal inlet tension value (T2) as measured in passing through the roll plate to the target inlet tension value ( tension control inlet (121 for controlling the roll speed of the mill so as to follow the front end T2 _ref)); Receiving a master speed value (MS1), the middle to feed back the medium tension value (T3) measured at the steel plate passing through the shear rolling mill to control the roll speed of the rear-stage rolling mill so as to follow the target medium tension value (T3 _ref) tension control unit 131; Receiving a master speed value (MS2), by feeding back the exit side tension value (T4) measured at the steel plate passing through the rear end of the rolling mill to the speed of the exit side bridle roll so as to follow the target exit side tension value (T42 _ref) control characterized in that the outlet including a tension controller (141). ;