Method for the controlled mechanical working of sintered porous

Details Method for the controlled mechanical working of sintered porous Method for the controlled mechanical working of sintered porous

1975-11-17

1977-11-29

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29263, 29283, 294205, B21K 104, B21H 112

Patent

active

040598799

ABSTRACT:
A method is provided for partially densifying a selected surface portion of a sintered porous powder metal element while applying restraining pressure to other selected portions of said element in order to inhibit growth and cracking of said element during the partial cold deformation thereof. The method is particularly applicable to the production of annular bearing rings.

REFERENCES:
patent: 1648721 (1927-11-01), Claus
patent: 2225269 (1940-12-01), Hildabolt
patent: 2360528 (1944-10-01), Talmage
patent: 3230606 (1965-06-01), Saito et al.
patent: 3365253 (1968-01-01), Haller
patent: 3382693 (1968-05-01), Rozhdestvensky et al.
patent: 3492120 (1970-01-01), Haller
patent: 3626564 (1971-12-01), Daniel
patent: 3782794 (1974-01-01), Chmura et al.
patent: 3803890 (1974-04-01), Connell
patent: 3831241 (1974-08-01), Elmore et al.

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