METHOD FOR PRODUCING SINTERED MEMBER, AND SINTERED MEMBER

A method for producing a sintered member, including the steps of: preparing a raw powder; press-forming the raw powder to produce a green compact; and sintering the green compact by high-frequency induction heating, wherein temperature of the green compact in the sintering step is controlled to sati...

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Hauptverfasser:	UEMOTO, Keiichi, HAYASHI, Tetsuya, YAMAMOTO, Tatsushi, YANO, Shunichi
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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Beschreibung
Zusammenfassung:	A method for producing a sintered member, including the steps of: preparing a raw powder; press-forming the raw powder to produce a green compact; and sintering the green compact by high-frequency induction heating, wherein temperature of the green compact in the sintering step is controlled to satisfy all the following conditions (I) to (III): (I) the temperature is increased without maintaining the temperature in a temperature range equal to or higher than an A1 point of an Fe-C phase diagram and lower than the sintering temperature of the green compact, (II) a heating rate is set to 12° C./s or more in a temperature range of the Ai point to an A3 point of the Fe-C phase diagram, and (III) a heating rate is set to 4° C./s or more in a temperature range of the A3 point of the Fe-C phase diagram to the sintering temperature of the green compact.