TORQUE BALANCING METHOD FOR CAST SLAB DRAWING ROLL IN CONTINUOUS CASTING AND CONTROLLER FOR CAST SLAB DRAWING DEVICE USING THE METHOD

摘要

PURPOSE:To obtain a cast slab having uniform and good quality by distributing total driving torque totalizing the driving torque value in each drawing roll to each drawing roll and correcting the revolutional speed of each motor with the distributed torque value so as to impart an appropriate driving torque value to each roll. CONSTITUTION:Plural drawing rolls 7 driven with the motor 6 controlled by each driving controller 10 are provided. The total driving torque totalizing the driving torque value in each drawing roll 7 is distributed to each drawing roll 7 and the revolutional speed of each motor 6 set by the cast slab drawing rate preset in this continuous casting equipment is corrected by the distributed driving torque value. By this method, since the suitable driving torque corresponding to the position of the drawing roll is imparted to each drawing roll 7, the cast slab having uniform and good quality can be obtd.