Ca ADDING METHOD IN CONTINUOUS CASTING OF BILLET

PROBLEM TO BE SOLVED: To provide a method useful for enhancing the yield of Ca in molten steel. SOLUTION: When Ca is added in the molten steel for continuous casting of a cast billet in the Ca adding method, Ca-containing alloy in which the mass ratio of [Ca]/[Si] is ≤0.02 is used for a Ca source. I...

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Bibliographische Detailangaben
1. Verfasser:	TAI TAKAFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS POWDER METALLURGY PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method useful for enhancing the yield of Ca in molten steel. SOLUTION: When Ca is added in the molten steel for continuous casting of a cast billet in the Ca adding method, Ca-containing alloy in which the mass ratio of [Ca]/[Si] is ≤0.02 is used for a Ca source. If necessary, the molten steel is deoxidized in advance to set the oxygen concentration [O] in the molten steel to ≤50 ppm, and then, Ca-containing alloy is added thereto. COPYRIGHT: (C)2005,JPO&NCIPI