Method for molding powders

Details Method for molding powders Method for molding powders

1987-06-12

1988-08-02

Lechert, Jr., Stephen J.

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Consolidation of powders

249 65, 249112, 249127, 264102, 264220, 264571, 264DIG78, 419 60, 419 66, 4254051, 4254052, 425DIG14, B22F 100

Patent

active

047612649

ABSTRACT:
A method for molding powders which comprises introducing a thin-wall resilient mold inside a ventilative mold support, reducing the outside pressure of the ventilative mold support to less than the atmospheric pressure (760 Torr), putting a thin-wall resilient mold exactly close to the inside wall of the ventilative mold support, supplying powder material into the thin-wall resilient mold, exhausting air existing in the voids formed in the powder material, and taking the ventilative mold support apart to apply cold isostatic press treatment to the thin-wall resilient mold. The shape of the thin-wall resilient mold is similar to the shape of the ventilative mold support.

REFERENCES:
patent: 1883854 (1929-11-01), Jeffery
patent: 3551946 (1971-01-01), Backer et al.
patent: 3577635 (1971-05-01), Bergman et al.
patent: 3862286 (1975-01-01), Couchman
patent: 4582682 (1986-04-01), Betz et al.
patent: 4612163 (1986-09-01), Nishio et al.

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