Method for producing rapidly-solidified flake-like metal powder and apparatus for producing the same
AssigneeNational Science Council
InventorsJien-Wei Yeh, Kuo-Shung Liu, Kuang-Yuan Shue, Yung-Chiun Ho
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Abstract
Disclosed is a method and an apparatus for producing rapidly-solidified flake particles, which combines centrifugal atomization with metal substrate cooling. A stream of molten metal is disintegrated centrifugally into droplets by a rotating disk. Then the molten droplets are solidified as flake particles as soon as impinging upon the annular planar surface of a cooled rotating concave disk. The solidified flake particles are subsequently departed from the annular planar surface by the centrifugal force and collected in a chamber.
Claims9
An apparatus for producing metal flake particles from molten metal, comprising:
- (a) means for melting metal;
- (b) a first rotating disk for atomizing molten metal;
- (c) a second rotating disk having an annular planar upper surface surrounding said first rotating disk for splat cooling;
- (d) a first rotating means for driving said first rotating disk, and an independent, second rotating means for driving said second rotating disk independently with respect to said first rotating disk;
- (e) means for guiding the molten metal onto said first rotating disk positioned to cause said molten metal to disintegrate into molten droplets on the periphery of the first disk;
- (f) means for impinging said molten droplets onto said annular planar surface in a manner to cause each of said molten droplets to be converted into a liquid film on said annular planar surface;
- (g) means for maintaining said annular planar surface at a temperature substantially lower than that of said molten metal to cause said liquid film to solidify on the annular planar surface as a flake particle;
- (h) means for applying a centrifugal force to each said flake particle in a manner to force the flake particles to leave said annular planar surface;
- and
- (i) means for collecting said flake particles.
Dependencies are inferred from the claim text.