Method of fabricating or repairing a blisk

Details Method of fabricating or repairing a blisk Method of fabricating or repairing a blisk

2004-11-08

2010-06-15

Chang, Rick K (Department: 3726)

Metal working

Method of mechanical manufacture

Impeller making

C029S889100, C228S112100, C228S212000, C228S265000, C427S140000, C427S142000, C427S405000, C427S456000

Reexamination Certificate

active

07735223

ABSTRACT:
A method of fabricating or reparing a blisk (10) that comprises a plurality of blades (14) attached to the outer periphery of a disc (12). Blades (14) are formed separately from the disc (12) and are attached to stubs (13) on the disc (12) by friction welding. A metal powder, such as titanium, is sprayed onto the stubs (13) to reinforce them during the friction welding process. Once the stub (13) has been coated with the powder spray, plates (20) are fastened on the disc (12) between which the sprayed coating (18) is clamped. The plates (20) restrain the sprayed coating (18) to prevent delamination during friction welding. Once each of the blades (14) has been welded onto the respective stubs (13) the clamping plates (20) are removed and the sprayed coating (18) is machined away.

REFERENCES:
patent: 5551623 (1996-09-01), Collot et al.
patent: 5915743 (1999-06-01), Palma
patent: 6258402 (2001-07-01), Hussary et al.
patent: 882317 (1961-11-01), None
patent: 57058984 (1982-04-01), None

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