SINTERED, HIGH-V, HIGH-SPEED STEEL AND PROCESS FOR ITS PRODUCTION

PCT No. PCT/JP82/00113 Sec. 371 Date Dec. 8, 1982 Sec. 102(e) Date Dec. 8, 1982 PCT Filed Apr. 8, 1982 PCT Pub. No. WO82/03412 PCT Pub. Date Oct. 14, 1982.A sintered high vanadium high speed steel with an excellent hardness and ductility of composition C 1.4-6.2%, W+2 Mo (W-equivalent) 10.0-24.0%, C...

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Hauptverfasser:	MAEDA, MASAYUKI, ISHIBACHI, TOYOAKI CHUO KENKYUSHO, YOSHIHARA, MINORU KANTO DENKA KOGYO CO., LTD, TAKUMA, TAKASHI KANTO DENKA KOGYO CO., LTD, FUKE, YASUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Zusammenfassung:	PCT No. PCT/JP82/00113 Sec. 371 Date Dec. 8, 1982 Sec. 102(e) Date Dec. 8, 1982 PCT Filed Apr. 8, 1982 PCT Pub. No. WO82/03412 PCT Pub. Date Oct. 14, 1982.A sintered high vanadium high speed steel with an excellent hardness and ductility of composition C 1.4-6.2%, W+2 Mo (W-equivalent) 10.0-24.0%, Cr 3.0-6.0%, V 8.5-28%, Co less than 17%, the remainder Fe and inevitable impurities, and a method of producing same. It can be produced by the steps of commingling the alloy constituents in the form of pulverulent oxides and carbon powder, heating the mixture in a stream of hydrogen, thereby reducing the mixture by the carbon and hydrogen simultaneously to yield an alloy powder, adjusting the composition and the grain size of the obtained alloy powder, pressing the alloy powder to a compact, sintered the compact in a vacuum, and finally converting the matrix of the sintered body into martensite by heat treatment.