Patent ID: 7540317

Claim:
A method for controlling a flow of a molten steel in a mold by applying a shifting magnetic field to the molten steel in a slab continuous casting machine, comprising: controlling a molten steel flow velocity on a molten steel bath surface to a predetermined molten steel flow velocity by applying a shifting magnetic field of EMLS-mode to impart a braking force to a discharge flow from an immersion nozzle when the molten-steel flow velocity on the molten steel bath surface is higher than a mold-powder entrainment critical flow velocity; and controlling the molten steel flow velocity on the molten steel bath surface to a range of from an inclusion-adherence critical flow velocity or more to a mold-powder entrainment critical flow velocity or less by applying the shifting magnetic field of EMLA-mode to increase the molten steel flow when the molten-steel flow velocity on the molten steel bath surface is lower than the inclusion-adherence critical flow velocity.