Apparatus for the production of high-purity metal powder by mean

Details Apparatus for the production of high-purity metal powder by mean Apparatus for the production of high-purity metal powder by mean

1979-10-15

1981-10-20

Hall, James R.

Plastic article or earthenware shaping or treating: apparatus

Means making particulate material directly from liquid or...

By slinger or rotating liquid comminutor

425174, B22F 900

Patent

active

042958083

ABSTRACT:
High-purity metal powder is made by the electron beam melting of a starting material in rod form in a vacuum wherein the molten metal is momentarily caught on a spinning plate rotating at high speed and flung therefrom and thereafter solidified by cooling. The metal on the spinning plate is bombarded with an electron beam that is so focused and periodically deflected that its focal spot is many times smaller than the diameter of the spinning plate. The beam deflection between the rotational center of the spinning plate and its marginal area is performed such that the spinning plate is scanned in a zone that extends radially of the axis of rotation of the spinning plate and is small in relation to its diameter. Cooling of the metal particles to the point of solidification is accomplished by radiation loss.

REFERENCES:
patent: 3275787 (1966-09-01), Newberry
patent: 3582529 (1971-06-01), Anderson et al.
patent: 3721511 (1973-03-01), Schlienger
patent: 3829538 (1974-08-01), Daymara et al.
patent: 3869232 (1975-03-01), Ruus et al.
patent: 3963812 (1976-06-01), Schlienger

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