Method and apparatus for forming pressed powder metal parts havi

Details Method and apparatus for forming pressed powder metal parts havi Method and apparatus for forming pressed powder metal parts havi

1987-02-25

1988-02-23

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 26, 419 28, 419 42, 419 49, 419 68, 249 83, 249 91, 425123, B22F 700

Patent

active

047269278

ABSTRACT:
A method and apparatus are disclosed for producing a powder metal part having a plurality of cavities. The method involves introducing a metal powder and an apparatus into a mold, the apparatus being made of a plurality of solid pieces which are in the shape of the cavities to be formed. The pieces are joined together by joining means and are positioned relative to each other by adjusting means so that the cavities formed therefrom are equally spaced about the center of the part. The apparatus is then removed from the mold, and the powder is then isostatically pressed in the mold to produce a green part which is then sintered to form the final part having the cavities.

REFERENCES:
patent: 3804617 (1974-04-01), Conklin
patent: 3818581 (1974-06-01), Vartanian et al.
patent: 3996048 (1976-12-01), Fiedler
patent: 4587707 (1986-05-01), Nishida et al.
patent: 4657822 (1987-04-01), Goldstein

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