Thermal spraying lining process for piston rings and nozzle for

Details Thermal spraying lining process for piston rings and nozzle for Thermal spraying lining process for piston rings and nozzle for

1994-04-25

1997-03-25

Bareford, Katherine

Coating apparatus

Projection or spray type

With projector heating, cleaning or conditioning

118320, 427449, 427455, 427456, 239 80, 239 83, B05C 504, B05B 718

Patent

active

056140223

ABSTRACT:
A method and apparatus for coating piston rings by producing droplets of molybdenum and stainless steel from these materials in wire form which are sprayed, preferably in equal amounts to coat the outer surfaces of the rings. A plurality of rings are mounted on a body which are moved in a helical path during the spraying. A nozzle is used having a central passage through which the wire is fed and two sets of passages, one set for an oxy-acetylene mixture and the other for compressed air, with the outlet orifices of the two sets of passages arranged in concentric rings around the central passage outlet orifice.

REFERENCES:
patent: 2207765 (1940-07-01), Stevens
patent: 2588421 (1952-03-01), Shepard
patent: 3133341 (1964-05-01), Marien
patent: 3332752 (1967-07-01), Batchelor et al.
patent: 3690686 (1972-09-01), Prasse et al.
patent: 3988119 (1976-10-01), Takahashi et al.
patent: 5032469 (1991-07-01), Merz et al.

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