Method for hot consolidating materials

Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Heat and pressure simultaneously to effect sintering

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264 64, B22F 314

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active

045966940

ABSTRACT:
A quantity of material (10), which is at less than a predetermined density, is disposed within a sealed container (12) which is, in turn, disposed in a first thermal jacket (32) to retain the heat within the material (10) to be consolidated. The first thermal jacket (32) is placed within a second thermal jacket (34) which is, in turn, disposed in a cavity defined by two elastomeric components (22, 24) retained between a ram (16) and pot die (14) of a press whereby upon closure of the press, the ram (16) enters the cavity (26) of the pot die (14) to apply external pressure to the entire exterior of the elastomeric components (22, 24). A seal (36) of material harder than the elastomeric material (22, 24) is disposed within the cavity (26) of the pot die (14) for preventing the elastomeric medium (22, 24) from leaking between the sliding surfaces of the ram (16) and the pot die (14).

REFERENCES:
patent: 3356496 (1967-12-01), Hailey
patent: 3650646 (1972-03-01), Kirkpatrick et al.
patent: 3656946 (1972-04-01), Inque et al.
patent: 4061453 (1977-12-01), DeSantis
patent: 4142888 (1979-03-01), Rozmus
patent: 4264556 (1981-04-01), Kumar et al.
patent: 4414028 (1983-11-01), Inoue
Jones, W. D., Fundamental Principles of Powder Metallurgy, Edward Arnold Publishers, Ltd., London, pp. 339-341.

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