CONTINUOUS CASTING METHOD

PROBLEM TO BE SOLVED: To provide a continuous casting method where cleanliness of molten steel when replacing a ladle can be improved without causing reduction in operability and increase in cost. SOLUTION: A molten steel is poured in such a manner that the amount WOof molten steel in a tundish in a...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEZAKI KAZUMASA, SHIGEMATSU KIYOSHI, WAKAO MASAMITSU, SHIRAGAMI TAKAYUKI, FUCHIGAMI KATSUHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a continuous casting method where cleanliness of molten steel when replacing a ladle can be improved without causing reduction in operability and increase in cost. SOLUTION: A molten steel is poured in such a manner that the amount WOof molten steel in a tundish in a stationary state maintains ≥6 times a molten steel feed speed Q [ton/min] to a continuous casting machine. From the point of time at which the molten steel height in the ladle reaches ≤50 cm, the pouring is finished in such a manner that the molten steel feed speed from the ladle to the tundish satisfies inequality (1): Q/h3×Qm, and also, the difference ΔW between it and the molten steel amount in a stationary state is made to satisfy inequality (3): ΔW>3×Qm. COPYRIGHT: (C)2009,JPO&INPIT