Sintered metal articles and process for their manufacture

Details Sintered metal articles and process for their manufacture Sintered metal articles and process for their manufacture

1978-07-19

1981-06-02

Hunt, Brooks H.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

148126, 148 155, 75200, 75238, B22F 324

Patent

active

042712394

ABSTRACT:
A sintered metal article such as a piston ring or a sealing ring (in particular those having a cross-section area not exceeding 20 mm.sup.2) having a density which is at least 88.5% of the theoretical density, having a fine machined surface finish, and having a nitrocarburized surface layer which is not found at a depth of more than about 250 microns from the surface.
The invention also includes the process of manufacturing such an article.

REFERENCES:
patent: 3194696 (1965-07-01), Muller
patent: 3829295 (1974-08-01), Farmer
patent: 3880600 (1975-04-01), Zboril
patent: 3912547 (1975-10-01), Gaucher et al.

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