C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/14, 117/53
C03B 11/06 (2006.01) B05B 7/20 (2006.01) C03B 9/48 (2006.01) C03B 40/00 (2006.01) C23C 4/06 (2006.01) C23C 4/12 (2006.01)
Patent
CA 2006993
ME-3905 ABSTRACT OF THE DISCLOSE 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.
Dorfman Mitchell R.
Kaufold Roger W.
Kushner Burton
Rotolico Anthony J.
Tilkaran Roopnarine
Osler Hoskin & Harcourt Llp
Perkin-Elmer Corporation The
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