Production method of a sintered gear with an area of high density

A production method for a sintered gear comprising: plural tooth portion having a tooth flank and a tooth bottom land; a high density area formed over entire surface of the tooth portion, the high density area having a density of 7.6 Mg/m 3 or more and formed with a depth of 1 mm or more from the su...

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Bibliographische Detailangaben
Hauptverfasser:	NAKATA, KENSUKE, ARAKAWA, TOMOAKI, ICHIKAWA, JUNICHI, KOHIDA, TOMOYUKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING PERFORMING OPERATIONS POWDER METALLURGY THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A production method for a sintered gear comprising: plural tooth portion having a tooth flank and a tooth bottom land; a high density area formed over entire surface of the tooth portion, the high density area having a density of 7.6 Mg/m 3 or more and formed with a depth of 1 mm or more from the surface; a low density area formed in deeper area than the high density area, the low density area having a density of 7.3 Mg/m 3 or less; and an intermediate area formed between the high density area and the low density area, the intermediate area having a density gradient in which the density is gradually decreased from the high density area to the low density area. The method includes a preparing step and a compressing step.