Bladed disc assembly method by hip diffusion bonding

Details Bladed disc assembly method by hip diffusion bonding Bladed disc assembly method by hip diffusion bonding

1993-10-13

1995-02-21

Cuda, Irene

Metal working

Method of mechanical manufacture

Impeller making

298892, B23P 1500

Patent

active

053904133

ABSTRACT:
A method of making a bladed disc assembly, of a kind used, for example, in the turbine or compressor sections of a gas turbine engine, includes forming a peripheral groove in the rim of the disc, positioning a plurality of bladed segments around the disc, each segment preferably including two or more blades extending radially from a root portion, each segment having its root portion located in the groove, securing the root portions in the groove by means of electron beam welding to form circumferential seam welds at either side of the root portions and axial seam welds between the root portions of adjacent segments thereby forming a vacuum seal, and diffusion bonding the root portions and the rim of the disc by means of isostatic hot gas pressure bonding.

REFERENCES:
patent: 1470508 (1923-10-01), Steenstrup
patent: 2450493 (1948-10-01), Strub
patent: 2778095 (1957-01-01), Schorner
patent: 3590454 (1971-07-01), Brass
patent: 4812107 (1989-03-01), Barcella et al.
patent: 5031288 (1991-07-01), Sadler
patent: 5197190 (1993-03-01), Coolidge

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