Method of producing high-grade metal or alloy powder

Details Method of producing high-grade metal or alloy powder Method of producing high-grade metal or alloy powder

1983-04-29

1984-10-02

Stallard, W.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 05BA, 75 05BB, 75 05BC, 75 05C, 264 8, B01J 202

Patent

active

044746040

ABSTRACT:
A method of producing high-grade metal or alloy powder, improved to eliminate undesirable inclusions and to reduce the production cost. A solid electrode material made of a metal or alloy, having a composition substantially equal to the composition of aimed metal or alloy powder, is heated and molten in a vacuum chamber by application of a plasma, arc, electron beam or laser beam. The molten metal or alloy in the form of droplets fall into collision with the surface of a roll rotating at a high speed so as to be pulverized and partially solidified. The particles of the metal or alloy scattered by the roll is directed to one side of the roll and are spheroidized and solidified into fine particles before they are collected in a collecting box disposed at one side of the roll within the vacuum chamber.

REFERENCES:
patent: 3829538 (1974-08-01), Darmara et al.
patent: 4358415 (1982-11-01), Tachimoto et al.

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