Method for producing spheroidal graphite cast iron and vehicle component using said spheroidal graphite cast iron

The objective of the present invention is to provide a high-performance spheroidal graphite cast iron that uses a spheroidizing agent that does not contain a rare earth element. The present invention pertains to a method for producing a spheroidal graphite cast iron having a specific final compositi...

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Bibliographische Detailangaben
Hauptverfasser:	SATO TAKASHI, IDEI HIROSHI, TOKIYAMA TAKUYA, BABA TSUKASA, HORIYA TAKAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS 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 TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	The objective of the present invention is to provide a high-performance spheroidal graphite cast iron that uses a spheroidizing agent that does not contain a rare earth element. The present invention pertains to a method for producing a spheroidal graphite cast iron having a specific final composition by performing spheroidizing processing using a spheroidizing agent that is an Fe-Si-Mg-Ca-based alloy that does not contain a rare earth element, performing inoculation processing using a first Fe-Si-based inoculation agent, and then performing molten pouring inoculation processing using a predetermined amount of a second Fe-Si-based inoculation agent containing 45-75% of Si, 1-3% of Ca, and no greater than 15 ppm of Ba.