Method and apparatus for making metal powder

Details Method and apparatus for making metal powder Method and apparatus for making metal powder

1987-09-04

1989-02-28

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

425 6, B22F 900, C22C 100

Patent

active

048082180

ABSTRACT:
An apparatus and method for forming essentially contaminant free metal powders of varying particle diameter by utilizing a separate gas percolation chamber for admitting a separate clean variable pressure percolating gas into a molten metal passing through a transfer tube, forming a metal froth which is sprayed into a reduced pressure collection chamber. The metal froth then disintegrates providing a finely divided powder which is cooled in the suspension state and collected. By utilizing a separate percolation chamber for independently pressurizing the metal froth, impurities are reduced and froth characteristics are controllably modifyable thereby providing essentially contaminant free metal powder of varying particle diameter. In addition, pressure equalization means are disclosed for overcoming pressure imbalances on start-up. A valve filter combination provides for free gas flow between the percolation chamber and melting chamber, preventing overpressured molten metal from blocking the percolation holes during the initial metal froth formation, thereby increasing powder yields.

REFERENCES:
patent: 1328446 (1920-01-01), Odam
patent: 2402441 (1946-06-01), Paddle
patent: 2638424 (1953-05-01), Hansgirg
patent: 3049421 (1962-08-01), Allen et al.
patent: 3165396 (1965-01-01), Goon
patent: 3510546 (1970-05-01), Wentzell
patent: 3588071 (1971-06-01), Wentzell
patent: 3720737 (1973-03-01), Klaphank et al.
patent: 4040815 (1977-08-01), Francois et al.
patent: 4264641 (1981-04-01), Mahoney et al.
patent: 4482134 (1984-11-01), Uda et al.
patent: 4533382 (1985-08-01), Miura et al.
patent: 4533383 (1985-08-01), Miura et al.
patent: 4533413 (1985-08-01), Miura et al.
patent: 4544404 (1985-10-01), Yolton et al.
patent: 4594101 (1986-06-01), Miura et al.
patent: 4610718 (1986-09-01), Araya et al.
patent: 4610719 (1986-09-01), Wentzell

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