Turbine engine seal and method for repair thereof

Details Turbine engine seal and method for repair thereof Turbine engine seal and method for repair thereof

1983-03-22

1984-05-22

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 53, 277235A, 277DIG6, 277236, 427 34, 415170R, 2940207, F16J 1544, F01D 1108, B05D 108

Patent

active

044497148

ABSTRACT:
A method for repairing turbine engine seals and a product manufactured in accordance with the method are provided. A worn or damaged honeycomb seal is removed from a backing plate together with a portion of the surface of the plate. The plate is restored to substantially its original thickness by a low pressure plasma spraying operation which may be followed by further machining to arrive at the required plate thickness. A new seal is then brazed thereon. The finished product will include the backing plate, a low pressure plasma sprayed coated surface, and a honeycomb seal brazed to the coated surface.

REFERENCES:
patent: 2285583 (1942-06-01), Jennings et al.
patent: 3046648 (1962-07-01), Kelly
patent: 3918925 (1975-11-01), McComas
patent: 4060250 (1977-11-01), Davis et al.
patent: 4148494 (1979-04-01), Zelaby et al.
patent: 4291448 (1981-08-01), Cretella et al.
patent: 4336276 (1982-06-01), Bill et al.
Elektrie, vol. 32, No. 4, 1978, E. Kranz et al., "Verfahren der Plasmatechnologie", pp. 194-199.

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