AUSTENITIC HEAT-RESISTING CAST STEEL AND TURBINE HOUSING FOR TURBOCHARGER USING THE SAME

According to an embodiment of the present invention, provided is an austenitic heat-resistant cast steel, comprising: 0.4-0.5 wt% of C; 1.0-2.0 wt% of Si; 1.0-2.0 wt% of Mn; 9.0-12.0 wt% of Ni; 21-24 wt% of Cr; 1.0-2.5 wt% of Nb; 0.5-3.5 wt% of W; and the remainder consisting of Fe and inevitable im...

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Bibliographische Detailangaben
Hauptverfasser:	KIM, GI YONG, KIM, HYEUNG JUN, JUNG, SEUNG MUN, LEE, SUNG HAK, JANG, SEONG SIK
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	According to an embodiment of the present invention, provided is an austenitic heat-resistant cast steel, comprising: 0.4-0.5 wt% of C; 1.0-2.0 wt% of Si; 1.0-2.0 wt% of Mn; 9.0-12.0 wt% of Ni; 21-24 wt% of Cr; 1.0-2.5 wt% of Nb; 0.5-3.5 wt% of W; and the remainder consisting of Fe and inevitable impurities. A turbine housing for a turbocharger including a minimum amount of Ni, which is expensive, and having a required enhanced durability at high temperatures may be manufactured. 본 발명의 일 실시예에 따른 오스테나이트계 내열주강은 C : 0.4~0.5 wt%, Si : 1.0~2.0 wt%, Mn : 1.0~2.0 wt%, Ni : 9.0~12.0 wt%, Cr : 21~24 wt%, Nb : 1.0~2.5 wt%, W : 0.5~3.5 wt%, 잔부 Fe 및 기타 불가피한 불순물을 포함하는 것으로 고비용의 Ni을 최소한도로 첨가하면서도 필요한 고온에서의 내구성이 향상된 터보차저 터빈하우징의 제조가 가능해진다.