Coating processes – Spraying – Heated coating material
Patent
1985-02-22
1986-10-28
Beck, Shrive P.
Coating processes
Spraying
Heated coating material
239 79, 239 8, 239 13, B05D 102
Patent
active
046198458
ABSTRACT:
A method for generating fine sprays of molten metal for spray coating and wder making is disclosed. Liquid metal is fed via a melt tube to a nozzle that is shaped like the frustrum of a cone. The nozzle is surrounded with gas jets in a coaxial pattern around the melt tube orifice. High pressure gas causes the formation of a low pressure region immediately next to the melt tube orifice that draws metal out of the orifice at a higher rate than would otherwise be the case. The coaxial gas stream atomizes the metal into droplets and thereafter forms a narrow, supersonic spray containing very fine metal droplets suitable for powder making or application of a coating.
REFERENCES:
patent: 3093315 (1963-06-01), Tachiki et al.
patent: 3663206 (1972-05-01), Lubanska
patent: 4066117 (1978-01-01), Clark et al.
Anderson Iver E.
Ayers Jack D.
Beck Shrive P.
Beers Robert F.
Hiskes Edward V.
Sheinbein Sol
The United States of America as represented by the Secretary of
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