AUTOMATIC THICKNESS CONTROLLER FOR REVERSING COLD ROLLING MILL

摘要

PURPOSE:To improve the accuracy of thickness by providing an arithmetic circuit for non-interference tension control with which the fluctuation of tension on the inlet / outlet side due to the change of rolling reduction of a gap AGC is predicted and with which it is corrected in an automatic thickness controller for reversing cold rolling mill. CONSTITUTION:In the automatic thickness control for reversing cold rolling mill which has the combination control system of gage meter control, feedforward control and rolling reduction monitoring control, it is composed by providing the arithmetic circuit 12 for non-interference tension control with which the fluctuation of tension on the inlet / outlet sides due to the gap AGC with which rolling reduction is changed can be eliminated. In this way, the deterioration of AGC effect that is caused by mutual interference due to rolling- down and tension is eliminated, the effect of the gap AGC is improved and the thickness control of higher accuracy can be executed.