Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member
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United States of America Patent
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Jun 23, 2020
Grant Date -
Nov 16, 2017
app pub date -
Aug 2, 2017
filing date -
Mar 11, 2014
priority date (Note) -
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Abstract
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
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