Method and apparatus for producing semisolid metal slurries and shaped components

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...

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Bibliographische Detailangaben
Hauptverfasser: MICHAEL JOHN BEVIS, SHOUXUN JI, ZHONGYUN FAN
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.