Method for manufacturing frictional locking rings for stepped mo

Details Method for manufacturing frictional locking rings for stepped mo Method for manufacturing frictional locking rings for stepped mo

1989-07-24

1990-07-10

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 28, 419 2, B22F 700

Patent

active

049405659

ABSTRACT:
A method serves for manufacturing frictional locking rings, in particular for stepped motor vehicle transmission synchronizing mechanisms, in which a sintered frictional coating is applied on a surface of the element and the sintered frictional coating is compacted.
For simplifying the method and improving the reproducibility of the dimensions of the surface of the sintered frictional coating one first applies a frictional coating of a sintering powder in a predetermined raw dimension regarding its thickness and compacts the frictional coating thereafter under pressure to a predetermined nominal dimension.

REFERENCES:
patent: 2784105 (1957-03-01), Stedman et al.
patent: 3037860 (1962-06-01), Masterson et al.
patent: 3087814 (1963-04-01), Smiley
patent: 3816112 (1974-06-01), Heck
patent: 4576872 (1986-03-01), Ward
patent: 4770283 (1988-09-01), Putz et al.

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