Plastic article or earthenware shaping or treating: apparatus – Means making particulate material directly from liquid or... – By slinger or rotating liquid comminutor
Patent
1985-11-14
1987-03-10
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Means making particulate material directly from liquid or...
By slinger or rotating liquid comminutor
264 8, B22F 910
Patent
active
046488200
ABSTRACT:
Apparatus for continuous preparation of rapidly cooled metal particles from a molten source metal by quenching into a quench liquid, wherein a cylindrical quench chamber rotates about its axis to hold the quench liquid against the inner wall thereof under centrifugal force, and a spinner disk within the quench chamber rotates about the same axis to spin off molten metal droplets into the quench liquid. Quench liquid is supplied at one end of the quench chamber and removed at the other end continuously, at the same time drawing off the solidified metal particles to an external recirculation loop where the particles are separated from the quench liquid. The spinner disk has an upper surface including a generally conical protruding tip. Metal from a source metal supply tube is directed downwardly onto the apex of the tip to form a laminar flow along the upper surface of the spinner disk. Droplets are formed near the outer periphery of the spinner disk as the liquid source metal is thrown off the disk, so that the time between formation of the liquid drops and their impingement on the wall of quench liquid is very brief. Consequently, the liquid droplets are cooled very rapidly, achieving cooling rates on the order of 10.sup.7 .degree. C. per second.
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Article from Journal of Metals, Apr. 1984, entitled "Production of Rapidly Solidified Metals and Alloys", S. J. Savage and F. H. Froes.
Mickelson Eric N.
Scruggs David M.
Chiesa Richard L.
Dresser Industries Inc.
Garmong Gregory O.
Peoples William R.
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