Accession Number : ADD012649

Title :   Method for Generating Fine Sprays of Molten Metal for Spray Coating and Powder Making.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Ayers,Jack D ; Anderson,Iver E

Report Date : 28 Oct 1986

Pagination or Media Count : 9

Abstract : A method for generating fine sprays of molten metal for spray coating and powder 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.

Descriptors :   *PATENTS, *LIQUID METALS, *SPRAYS, *SPRAY NOZZLES, COATINGS, DROPS, GASES, HIGH PRESSURE, HIGH RATE, JET FLOW, MELTS, METALS, ORIFICES, SUPERSONIC CHARACTERISTICS, TUBES, ATOMIZATION, POWDER METALS, METAL COATINGS

Subject Categories : Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE