Coating processes – Solid particles or fibers applied – Uniting particles to form continuous coating with...
Patent
1989-01-04
1991-04-09
Pianalto, Bernard
Coating processes
Solid particles or fibers applied
Uniting particles to form continuous coating with...
427 57, 427191, 427289, 427367, 4273766, 4273767, 427380, 4273835, 4273977, 427423, B05D 302, B05D 312
Patent
active
050063219
ABSTRACT:
Manufacture of glass mold plungers utilizes a thermal spray gun having combustion chamber with an open channel for propelling combustion products into the ambient atmosphere at supersonic velocity. The method comprises injecting into the chamber a combustible mixture of combustion gas and oxygen at a pressure in the chamber of at least two atmospheres above ambient atmospheric pressure, feeding into the chamber a powder comprising self-fluxing alloy particles, and combusting the combustible mixture in the chamber means whereby a supersonic spray stream containing the powder is propelled through the open channel. The spray stream is directed toward a glass mold plunger substrate such as to produce a coating thereon which is ground and polished. The coating may be fused prior to grinding.
REFERENCES:
patent: 2317173 (1940-02-01), Bleakley
patent: 2875043 (1959-02-01), Tour
patent: 3455510 (1966-11-01), Rotolico
patent: 3530892 (1968-03-01), Charlop
patent: 3617358 (1967-09-01), Dittrich
patent: 4382811 (1981-03-01), Luscher et al.
patent: 4416421 (1981-07-01), Browning
Dorfman Mitchell R.
Kaufold Roger W.
Kushner Burton
Rotolico Anthony J.
Tilkaran Roopnarine
Grimes E. T.
Ingham H. S.
Pianalto Bernard
The Perkin-Elmer Corporation
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