CAST STEEL PIECE WITH FINE SOLIDIFICATION STURCTURE AND EXCELLENT FORMING CHARACTERISTICS AND STEEL PRODUCT AND SEAMLESS STEEL PIPE PRODUCED BY USING THE SAME

A cast steel piece excellent in forming characteristics, characterized in that 60 % or more of the total cross section is constituted by equiaxial grains satisfying the following formula: D < 1.2 X 1/3 + 0.75 wherein D represents a diameter(mm) of an equiaxial grain as a structure having same ori...

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Bibliographische Detailangaben
Hauptverfasser:	ZEZE MASAFUMI, KUSUNOKI SHINTARO, MOROHOSHI TAKASHI, ABE MASAYUKI, MIURA RYUSUKE, MIYAMOTO KENICHIRO, KOYAMA YUJI, SUGANO HIROSHI, KINARI YASUHIRO, OKA MASAHARU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 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 PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A cast steel piece excellent in forming characteristics, characterized in that 60 % or more of the total cross section is constituted by equiaxial grains satisfying the following formula: D < 1.2 X 1/3 + 0.75 wherein D represents a diameter(mm) of an equiaxial grain as a structure having same orientation of crystal and X represents a distance from the surface (mm) of the cast steel piece. The cast steel piece and a steel product produced by forming the cast steel piece is extremely reduced in the amount of surface and internal defects.