Method for feeding material into plasma for spheroidization
AssigneeAgency for Science, Technology and Research
InventorsVerner SOH, Delvin WUU, Pei WANG
Life of this patent
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Abstract
There is provided a method for producing a spheroidized powder from a feed stream comprising metal powder, the method comprising feeding a first feed stream comprising metal powder into a plasma chamber at a first angle offset from plasma flow within the plasma chamber; and melting and spheroidizing the metal powder within the plasma chamber to form spheroidized powder, wherein the first angle offset from plasma flow is in a direction against the plasma flow. There is also provided a nozzle for feeding a feed stream into a plasma chamber.
Claims22
A method for producing a spheroidized powder from a feed stream comprising metal powder, the method comprising:
- feeding a first feed stream comprising metal powder into a plasma chamber at a first angle offset from plasma flow within the plasma chamber;
- and
- melting and spheroidizing the metal powder within the plasma chamber to form spheroidized powder,
- wherein the first angle offset from plasma flow is in a direction against the plasma flow.
(canceled)
A nozzle for feeding a feed stream into a plasma chamber, the nozzle comprising:
- an inlet adapted to receive a metal powder;
- an outlet adapted to feed the metal powder into a plasma chamber;
- and
- a plurality of channels between the inlet and the outlet, adapted to flow the metal powder from the inlet to the outlet,
- wherein the plurality of channels are arranged at a converging angle towards the outlet.
22-24. (canceled)
Dependencies are inferred from the claim text.