Process for the preparation of powdered metal parts

Details Process for the preparation of powdered metal parts Process for the preparation of powdered metal parts

1976-12-27

1978-04-25

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75211, 75212, 427430R, 427435, 427154, 427300, 294205, 148126, 134 2, B22F 300, B22F 324

Patent

active

040860876

ABSTRACT:
A process of producing powdered metal parts comprising the steps:
1. Preforming powdered metal parts into a desired shape;
2. Treating said preformed part with a substance which can fill the pores of said powdered metal parts, said substance being immiscible with organic lubricants;
3. Contacting said treated metal part with a lubricant;
4. Sizing or coining the lubricated powdered metal part; and
5. Washing said powdered metal part to remove said lubricant.
Preferably the sized powdered metal part is also heat treated.

REFERENCES:
patent: 2076381 (1937-04-01), Millner et al.
patent: 2155592 (1939-04-01), Hardy
patent: 2655457 (1953-10-01), Verdi
patent: 2897097 (1959-07-01), Smith et al.
patent: 3007822 (1961-11-01), Kaiser et al.
patent: 3290124 (1966-12-01), Holtzclaw, Jr.
patent: 3337336 (1967-08-01), Rao
patent: 3741734 (1973-06-01), Dunham
patent: 3853491 (1974-12-01), Dunham
patent: 3988524 (1976-10-01), Dreyer et al.

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