Method and apparatus for producing semisolid method slurries and shaped components
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United States of America Patent
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Jun 8, 2004
Grant Date -
N/A
app pub date -
Aug 5, 2002
filing date -
Sep 24, 1999
priority date (Note) -
Expired
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Abstract
A method and apparatus for converting liquid alloy into its thixotropic state and for fabricating high integrity components by injecting subsequently the thixotropic alloy into a die cavity. The apparatus includes a liquid metal feeder, a high shear twin-screw extruder, a shot assembly and a central control system. The apparatus and method can offer net-shaped components characterized by close to zero porosity, fine and equiaxed particles with a uniform distribution in the eutectic matrix, and a large range of solid volume fractions.
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