Gear wheels rolled from powder metal blanks

Details Gear wheels rolled from powder metal blanks Gear wheels rolled from powder metal blanks

1997-09-04

1999-03-23

Echols, P. W.

Machine element or mechanism

Gearing

Rotary bodies

74460, F16H 5517

Patent

active

058845275

ABSTRACT:
A gear wheel is formed from a pressed and sintered powder metal blank in which the metal powder comprises an admixture of iron powder and at least one alloying addition and the gear wheel is surface hardened by applying densifying pressure only to the tooth root regions or only to the tooth flank regions in order to establish densification in the range of 90 to 100 per cent of full theoretical density to a depth of at least 380 and up to about 1,000 microns.

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Dixon, R.H.T. and Clayton, A., Powder Metallurgy for Engineers, The Machinery Publishing Company, Ltd., Brighton, Sussex, England, 1971, Chapter 3, pp. 30-57.
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Powder Metallurgy Design Manual, Metal Powder Industries Federation, 1989, pp. 50-56.
Hoeganaes Corporation, Ancorsteel 1000, 1000B, 1000C, Apr., 1990 (4.90), pp. 1-19.

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