Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-09-15
1977-06-14
Lanham, C.W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
291568H, 29401A, 416213R, 416241R, 228119, 427142, B23P 1504, B23P 700
Patent
active
040287874
ABSTRACT:
A refurbished turbine vane and method of producing the same. Used turbine vanes are cleaned, annealed and slotted adjacent their ends, after which the cooling passages are welded closed and all cracks welded over, on both leading and trailing edges. The trailing edge, for a vane having a short chord, is built up by welding along its full length with an alloy wire, after which the slots that were cut adjacent the ends are closed, also by welding. Then the worn surfaces of the vane are built-up by a plasma spray process, using a metal powder with added silica, to a thickness as great as 30 to 40 thousandths of an inch. The built-up vane is then sintered and thereafter surface finished to conform to the original contour of the blade when new. The cooling holes are finally recut, and the vane polished as required and inspected.
REFERENCES:
patent: 1755321 (1930-04-01), Hendrickson
patent: 2494970 (1950-01-01), Shea
patent: 2641439 (1953-06-01), Williams
patent: 3015880 (1962-01-01), Stephenson
patent: 3564689 (1971-02-01), Hirtenlechner
patent: 3576065 (1971-04-01), Frazier
patent: 3711310 (1973-01-01), Leeper, Jr.
Bernardo Matthew
Cretella Salvatore J.
De Musis Ralph T.
Crane Daniel C.
Lanham C.W.
Lehmann H. Gibner
Lehmann K. Gibner
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