Production method for sintered gear

Details Production method for sintered gear Production method for sintered gear

2011-03-15

2011-03-15

Bryant, David P (Department: 3726)

Metal working

Method of mechanical manufacture

Gear making

C029S893300, C029S893360

Reexamination Certificate

active

07905018

ABSTRACT:
A sintered gear comprises: 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/m3or 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/m3or 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.

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Gerhard; Neue Verfahren zur Tragfähigkeitssteigerung von gesinterten Zahnrädern (Doktorarbeit); Jun. 23, 2003; XP0012476656.

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