Method of and apparatus for producing metal powder

Details Method of and apparatus for producing metal powder Method of and apparatus for producing metal powder

1994-05-05

1996-01-09

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

Producing solid particulate free metal directly from liquid...

75337, 75338, 264 12, 266202, 425 7, B22F 910, C22B 905

Patent

active

054825326

ABSTRACT:
The invention provides a method of producing metal powders which is less likely permit variations in cooling rate, ensures rapid solidification at a great cooling rate and readily gives fine particles, and a production apparatus for the method. The method comprises injecting a cooling liquid into a cooling tubular body (1) along an inner peripheral surface thereof to form a cooling liquid layer (9) moving toward a cooling liquid discharge end of the tubular body (1) while swirling along the inner peripheral surface of the tubular body (1); supplying a molten metal (25) to a space (23) inside the cooling liquid layer (9); applying a gas jet (26) as directed toward the cooling liquid layer (9) to the molten metal (25) to divide the molten metal and supply the divided molten metal to the cooling liquid layer (9); and discharging the cooling liquid containing a metal powder solidified in the liquid layer (9) from the cooling liquid discharge end of the tubular body (1) to outside.

REFERENCES:
patent: 4405535 (1983-09-01), Raman et al.
patent: 4787935 (1988-11-01), Eylon et al.
patent: 4810284 (1989-03-01), Auran et al.
patent: 4824478 (1989-04-01), Roberts et al.
patent: 4905899 (1990-03-01), Coombs et al.
patent: 5352267 (1994-10-01), Yoshino et al.

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