METHOD FOR SMELTING EXTRA-LOW CARBON STEEL

PROBLEM TO BE SOLVED: To provide a method for smelting extra-low carbon steel with high cleanliness in the adequate productivity, in vacuum decarburizing treatment. SOLUTION: This method for smelting the extra-low carbon steel while carrying out decarburization treatment with a vacuum degassing proc...

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Hauptverfasser:	KANZAKI YUICHI, YAMANA HISASHI, MORISHITA MASAFUMI, HOSHIKAWA IKUO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for smelting extra-low carbon steel with high cleanliness in the adequate productivity, in vacuum decarburizing treatment. SOLUTION: This method for smelting the extra-low carbon steel while carrying out decarburization treatment with a vacuum degassing process, includes controlling a total quantity of iron (T. Fe) in ladle slag before the decarburization treatment, to more than 6% but 12% or less.