Turbine rotor fabrication by thermal methods

Details Turbine rotor fabrication by thermal methods Turbine rotor fabrication by thermal methods

1978-08-14

1980-02-05

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

228127, 228193, 228212, 416213R, B23P 1504, B23R 1300

Patent

active

041864735

ABSTRACT:
A method of fabricating a hybrid dual property wheel assembly includes the steps of preforming a bladed ring of a highly solidified alloy material including a base with a large diameter central opening therethrough and thereafter supporting a metal disc therein to form front and rear joint lines on either side of the juncture between the bladed ring and the disc. The method further contemplates direction of radio frequency energy to the disc to cause it to thermally expand into radially pressed contact with the inside diameter of the bladed ring at an interface therebetween while maintaining the disc and bladed ring under a continuous vacuum atmosphere and heated by the radio frequency energy for maintenance of a diffusion bond temperature between the expanded disc and the surrounding bladed ring of the wheel assembly to form a metallurgical connection therebetween by metal growth across the interface.

REFERENCES:
patent: 1078906 (1913-11-01), Eldred
patent: 1825239 (1931-09-01), Meyer
patent: 2450493 (1948-10-01), Strub
patent: 2800706 (1957-07-01), Lindblom
patent: 3481024 (1969-12-01), Bunn
patent: 3559274 (1971-02-01), Granata
patent: 3747197 (1973-07-01), Riel
patent: 3905723 (1975-09-01), Torti, Jr.
patent: 3918623 (1975-11-01), Ishiguro et al.
patent: 4096615 (1978-06-01), Cross

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