MOLD LEVEL CONTROL METHOD FOR CONTINUOUS CASTER AND MANUFACTURING METHOD OF CAST PIECE BY CONTINUOUS CASTER

摘要

PROBLEM TO BE SOLVED: To control a molten metal level changing a frequency setting of a disturbance compensator without either switching the disturbance compensator according to a frequency nor disconnecting the disturbance compensator from the control system, when a mold level control device equipped with the disturbance compensator is used and the molten metal level in the mold is controlled changing the frequency setting of the disturbance compensator.;SOLUTION: The mold level control device comprises a molten metal level meter 5 to detect the molten metal level in the mold, a control device 6 to output an opening command for a sliding nozzle 3 based on the molten metal level detected by the molten metal level meter and a molten metal level setting set in advance, and the disturbance compensator 8 that performs control calculation to compensate a disturbance in a specific frequency range based on the molten metal level detected by the molten metal level meter. To apply the mold level control device, the frequency setting of the disturbance compensator is changed according to a casting speed.;COPYRIGHT: (C)2007,JPO&INPIT