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Spray casting of metallic preforms

United States Patent

October 24, 2000
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A metal alloy is melted in a crucible and ejected from the bottom of the crucible as a descending stream of molten metal. The descending stream is impacted with a plurality of primary inert gas jets surrounding the molten metal stream to produce a plume of atomized molten metal droplets. An inert gas is blown onto a lower portion of the plume with a plurality of auxiliary inert gas jets to deflect the plume into a more restricted pattern of high droplet density, thereby substantially eliminating unwanted overspray and resulting wasted material. The plume is projected onto a moving substrate to form a monolithic metallic product having generally parallel sides.
Flinn; John E. (Idaho Falls, ID), Burch; Joseph V. (Shelley, ID), Sears; James W. (Niskayuna, NY)
Bechtel BWXT Idaho, LLC (Idaho Falls, ID)
08/ 638,254
April 26, 1996
CONTRACT AND ORIGIN OF THE INVENTION The United States Government has rights in this invention pursuant to Contract No. DE-AC07-94ID13223 between Lockheed Idaho Technologies Company and The United States Department of Energy.