Method for manufacturing rings or discs having a blade or vane r

Details Method for manufacturing rings or discs having a blade or vane r Method for manufacturing rings or discs having a blade or vane r

1991-06-11

1993-08-10

Walsh, Donald P.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Heat and pressure simultaneously to effect sintering

419 8, B22F 504

Patent

active

052346617

ABSTRACT:
Method for manufacturing rings or discs having a blade or vane rim from a powder which is received in a mold cavity formed by a gas-tight casing (10, 11, 12) and is isostatically hot pressed in the casing to form a monolithic body. A core (13) of hexagonal boron nitride or graphite having through apertures (14) corresponding to the profile of the individual blades or vanes, is located in the mold cavity said apertures being filled with powder to form the blades or vanes as an integrated portion of the monolithic body obtained by the isostatic hot pressing.

REFERENCES:
patent: 4127684 (1978-08-01), Baker
patent: 4445259 (1984-10-01), Ekbom
patent: 4855103 (1989-04-01), Ekbom
patent: 5082623 (1992-07-01), Ekbom

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