CONTROL METHOD FOR CONTINUOUS CASTING MACHINE, CONTROL DEVICE FOR CONTINUOUS CASING MACHINE, AND MANUFACTURING METHOD FOR CAST SLAB

摘要

A control device 10 of a continuous casting machine according to one embodiment of the present invention includes: a molten steel flow state estimator 11 estimating, by on-line real-time system, a flow state of molten steel in a mold by using an operation condition of the continuous casting machine 1 and temperature data on the molten steel in the mold; a molten steel flow index calculator 12 calculating, by on-line real-time system, a molten steel flow index on the basis of the flow state of the molten steel estimated by the molten steel flow state estimator 11, the molten steel flow index being a factor of mixing of impurities into a casting inside the mold; and an operation condition controller 13 controlling the operation condition of the continuous casting machine 1 so that the molten steel flow index calculated by the molten steel flow index calculator 12 is within an appropriate range.