METHOD AND APPARATUS FOR CONTROLLING FLOW OF MOLTEN STEEL IN MOLD, AND METHOD FOR PRODUCING CONTINUOUS CASTINGS

METHOD AND APPARATUS FOR CONTROLLING FLOW OF MOLTEN STEEL IN MOLD, AND METHOD FOR PRODUCING CONTINUOUS CASTINGS

When a molten steel flow velocity (u) on a bath surface is higher than a mold-powder entrainment critical flow velocity of 0.32 m/sec, the molten steel flow velocity (u) is controlled to a predetermined molten steel flow velocity by applying a shifting magnetic field to impart a braking force to a d...

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Hauptverfasser: KUBOTA, JUN, MIZUOKA, SEISHI, KONDO, TSUNEO
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
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creator KUBOTA, JUN
MIZUOKA, SEISHI
KONDO, TSUNEO
description When a molten steel flow velocity (u) on a bath surface is higher than a mold-powder entrainment critical flow velocity of 0.32 m/sec, the molten steel flow velocity (u) is controlled to a predetermined molten steel flow velocity by applying a shifting magnetic field to impart a braking force to a discharge flow from an immersion nozzle. When the molten steel flow velocity (u) is lower than an inclusion-adherence critical flow velocity of 0.20 m/sec and is higher than or equal to a bath-surface skinning critical flow velocity of 0.10 m/sec, the molten steel flow velocity (u) is control to the range of 0.20-0.32 m/sec by applying a shifting magnetic field to rotate the intra-mold molten steel in a horizontal direction. When the molten steel flow velocity (u) is lower than the inclusion-adherence critical flow velocity, the molten steel flow velocity (u) is controlled to the range of 0.20-0.32 m/sec by applying a shifting magnetic field to impart an accelerating force to the discharge flow from the immersion nozzle.
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subjects CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
title METHOD AND APPARATUS FOR CONTROLLING FLOW OF MOLTEN STEEL IN MOLD, AND METHOD FOR PRODUCING CONTINUOUS CASTINGS
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