SHAPE CONTROL IN SCHEDULE FREE HOT STRIP ROLLING

Schedule free rolling (SFR) is contributive to get supreme production rate and flexible production plan.Non uniform distribution of work roll surface wear along roll axis results in irregular loaded roll gap profile, makes strip shape out of control in “rolling of large quantities of strips in same width” and “rolling by strip width increase in sequence”, and restrains the realization of SFR. In fact, SFR is heavily related to shape control. In order to carry out SFR, elimination or well distribution of work roll wear and creation of special shape control technologies are necessary.