JPS5575871A - Control method of rolls in continuous casting machine - Google Patents

Abstract

PURPOSE: To straighten a camber roll or suppress the progression of its camber and prevent the degradation in the quality of the slab during casting by lowering the speed of casting at the time when the concave face owing to bending of the slab guide rolls detected during continuous casting opposes to the slab.

CONSTITUTION: A roll bend detector using a differential transformer or the like is disposed on the roll surface counter-opposing to the slab surface of the roll barrel length center based on each roll chock of the continuous casting machine, whereby the roll bending during continuous casting is detected. The casting speed at the continuous work is lowered at the timings at which the concave face of the camber roll detected with the abovementioned detector opposes to the slab surface. Namely, the bending of the incorrect roll may be suppressed of progression or straightened simply by placing emphasis on the camber roll which degrades quality and adjusting the timings of the casting speed slightly.

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