Method of manufacture of cooled turbine or compressor buckets

Details Method of manufacture of cooled turbine or compressor buckets Method of manufacture of cooled turbine or compressor buckets

1975-07-30

1977-05-17

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29424, 228118, 228215, 416 96R, B23P 1504

Patent

active

040232514

ABSTRACT:
Before skins are brazed on airfoil cores having cooling channels recessed into the surfaces thereof, the surfaces of the cooling channel walls are covered with a layer of oxide material. The oxide formation selected is one that is not reducible in dry hydrogen. Thereafter, when the normally employed hydrogen or vacuum brazing operation is conducted to apply the airfoil skin, the oxide-covered sides of the cooling channels will not be wet by the molten braze alloy. Plugging of the covered cooling channels during manufacture is thereby greatly reduced.

REFERENCES:
patent: 1321499 (1919-11-01), Armstrong
patent: 2641439 (1953-06-01), Williams
patent: 2957230 (1960-10-01), Johnson
patent: 3610811 (1971-10-01), O'Keefe
patent: 3848307 (1974-11-01), Kydd
Clavez, E. W., et al., Solder Stop for Contact Pin, from IBM Technical Disclosure Bulletin, vol. 10, No. 1, June, 1967, p. 7.

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