US 11,654,483 B2
Method for forming high quality powder for an additive manufacturing process
Frederic Larouche, Saint-Colomban (CA); Matthieu Balmayer, Montreal (CA); and Gabriel Dickson, Saint-Colomban (CA)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by AP&C Advanced Powders & Coatings Inc., Boisbriand (CA)
Filed on Apr. 7, 2020, as Appl. No. 16/842,159.
Prior Publication US 2021/0308753 A1, Oct. 7, 2021
Int. Cl. B22F 9/14 (2006.01); B22F 1/065 (2022.01); B22F 1/142 (2022.01); B33Y 70/00 (2020.01); B22F 9/20 (2006.01)
CPC B22F 9/14 (2013.01) [B22F 1/065 (2022.01); B22F 1/142 (2022.01); B33Y 70/00 (2014.12); B22F 9/20 (2013.01); B22F 2201/11 (2013.01); B22F 2202/13 (2013.01); B22F 2301/052 (2013.01); B22F 2301/15 (2013.01); B22F 2301/205 (2013.01); B22F 2301/35 (2013.01); B22F 2304/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of treating a feedstock powder of feedstock particles in a powder treatment assembly, the method comprising:
directing the feedstock powder from a feedstock discharge nozzle into a plasma chamber within a reactor of the powder treatment assembly;
exposing the feedstock powder to a plasma field generated by a plasma source within the plasma chamber to form a treated powder having treated particles with an increased sphericity relative to the feedstock particles, wherein the plasma source comprises a plurality of plasma torches; and
supplying downstream of the plasma chamber a hot gas sheath flow that surrounds the treated powder.