| 摘要 |
A chill block melt spinning apparatus produces flake-type powder of the smallest magnitude by centrifugal disintegration of molten metals and alloys. Molten metal or alloy is delivered to a rotating cup which centrifugally forces the metal to exit the cup tangentially in a sheet which breaks up into streams and then into a series of droplets. Rotating chill cylinders are radially spaced from the rotating cup. The cylinders receive the streams or droplets of semi-solidified metal and provide a fresh surface for each droplet to chill the droplets, forming ultra fine flakes while deflecting the flakes downward into a collecting area. The cylinders have a concave outer surface which corresponds to the shape of the rotating cup to provide an equidistant travel path from the rotating cup to a deflection contact surface for the radially travelling droplets.
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