Plastic article or earthenware shaping or treating: apparatus – Means making particulate material directly from liquid or... – By slinger or rotating liquid comminutor
Patent
1977-12-21
1980-08-12
Rosenbaum, Mark
Plastic article or earthenware shaping or treating: apparatus
Means making particulate material directly from liquid or...
By slinger or rotating liquid comminutor
264 8, B29C 2300
Patent
active
042170826
ABSTRACT:
An apparatus is set forth wherein powder is produced by melting metal in a melting furnace and then directing it onto an atomizer rotor or cup. The atomizer cup is positioned to receive molten metal at the center thereof and is rotated by any means desired. The cup comprises an outer metal cup fixed to the top of a rotating shaft, with an inner cup mounted in the center thereof and spaced therefrom by an outwardly extending flange at the top. A low conductivity thermal insulation is provided between the cups, and the inner cup is coated with a ceramic such as by plasma or flame spray. The inner cup is tapered inwardly as it extends from its bottom to the top edge to provide an annular pool of molten metal around the inner surface permitting the liquid metal to attain the peripheral speed fo the spinning cup as it moves from the center of the cup to the top edge.
A heater is provided to preheat the cup and during operation to aid in keeping the cup surface above the melting point of the liquid metal. This will help prevent premature freezing of the liquid metal before it reaches the quenching medium into which the particles are being thrown.
REFERENCES:
patent: Re12568 (1906-11-01), Cowing
patent: 1095523 (1914-05-01), Rockwell
patent: 2156982 (1939-05-01), Harford et al.
patent: 2439772 (1948-04-01), Gow
patent: 3907537 (1975-09-01), Logens-Bogh
patent: 4053264 (1977-10-01), King
McCarthy Jack N.
Rosenbaum Mark
United Technologies Corporation
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