Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2005-02-01
2005-02-01
Lin, Kuang Y. (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S097000
Reexamination Certificate
active
06848494
ABSTRACT:
A method for the manufacture of a three-dimensional object includes the steps of forming a mixture that contains a binder, a wetting agent, and a least one of aluminum or a first aluminum-base alloy into a green composite, removing the binder from said green composite forming a porous preform structure and infiltrating the porous preform structure with a molten second aluminum base alloy to form the three-dimensional object with near theoretical density. The wetting agent assists in wetting during infiltration. The green composite may be formed by an additive process such as computer aided rapid prototyping, for example selective laser sintering. The method facilitates the rapid manufacture of aluminum components by an inexpensive technique that provides high dimensional stability and high density.
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Newell Kenneth J.
Zenuk Charles H.
3-D Systems, Inc.
D'Alessandro Ralph
Lin Kuang Y.
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