Low cost, high temperature turbine wheel and method of making th

Details Low cost, high temperature turbine wheel and method of making th Low cost, high temperature turbine wheel and method of making th

1975-07-17

1978-06-27

Lanham, C.W.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75226, 291568R, 29420, 416241B, 416244A, B22F 300, B22F 314

Patent

active

040972763

ABSTRACT:
This turbine wheel has a plurality of blades radiating from a central hub and is manufactured by a novel method including the steps of assembling a plurality of preformed ceramic or superalloy blades into a ring with foot portions on the blades projecting into the central region of the assembly, filling such central region with powdered ceramic material, such as silicon carbide, or a superalloy material, heating and isostatically pressing, at least the central region, to compact the powdered material around the foot portions into a unitary hub. The blade feet are suitably shaped to provide a precise interlocking engagement between the blades and the unitary hub.

REFERENCES:
patent: 873241 (1907-12-01), Imle
patent: 876123 (1908-01-01), Wilkinson
patent: 2769611 (1956-11-01), Schwarzkopf
patent: 2941933 (1960-06-01), Roake et al.
patent: 3000081 (1961-09-01), Webb
patent: 3803702 (1974-04-01), Bratt et al.
patent: 3844778 (1974-10-01), Malone et al.
patent: 3854189 (1974-12-01), Ezis et al.
patent: 3873234 (1975-03-01), Penny
patent: 3885294 (1975-05-01), Chaundy et al.
patent: 3887412 (1975-06-01), Styhr et al.
patent: 3905723 (1975-09-01), Torti
patent: 3940268 (1976-02-01), Catlin

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