Method and apparatus for semi-solid material processing

Details Method and apparatus for semi-solid material processing Method and apparatus for semi-solid material processing

2007-03-29

2009-02-24

Lin, Kuang (Department: 1793)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S071100, C164S312000, C164S900000

Reexamination Certificate

active

07493934

ABSTRACT:
A method of forming a material includes the steps of: vibrating a molten material at an ultrasonic frequency while cooling the material to a semi-solid state to form non-dendritic grains therein; forming the semi-solid material into a desired shape; and cooling the material to a solid state. The method makes semi-solid castings directly from molten materials (usually a metal), produces grain size usually in the range of smaller than 50 μm, and can be easily retrofitted into existing conventional forming machine.

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