Method and apparatus for making high purity metallic powder

Details Method and apparatus for making high purity metallic powder Method and apparatus for making high purity metallic powder

1975-01-30

1976-06-15

Stallard, W.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing centrifugal force or rotating forming zone

75 5B, 75 5BA, 75 5BB, 75 5C, 264 10, 425 8, B22D 2308

Patent

active

039638120

ABSTRACT:
High purity metallic powder is made from high purity metallic rod by positioning the rod above a horizontally oriented, cooled and rotating electrode. An electric potential is applied between the rod and the electrode so that the electrode end porixmate the disc is progressively melted down. Molten droplets are thrown off the disc by centrifugal forces onto a cooled, rotating, concave shield which intercepts the trajectory of the droplets. As the droplets contact the cooled shield they solidify and are deflected into a collector. The melting and cooling operations are performed in a controlled atmosphere, e.g., in a vacuum.

REFERENCES:
patent: 2897539 (1959-08-01), McMillan
patent: 3021562 (1962-02-01), Chisholm et al.
patent: 3119685 (1964-01-01), Hansley et al.
patent: 3784656 (1974-01-01), Kaufmann
patent: 3887667 (1975-06-01), Clark

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