Investment casting

Details Investment casting Investment casting

1996-09-30

1998-05-05

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 35, 164 45, 264221, B22C 904

Patent

active

057462720

ABSTRACT:
Methods are provided for producing investment cast articles, such as orthopedic implants, or portions thereof, having at least a partially textured surface that is formed during casting of the article. In an exemplary method, a textured metal casting is produced by creating a heat destructible pattern and spraying the pattern with a texturing material to cause the texturing material to form a textured surface on at least a portion of the pattern. In another embodiment, a textured template is pressed against a heat softenable pattern to provide a textured pattern. With respect to each of these methods, a shell is created around the textured pattern to form a mold, and the pattern is removed from the shell. Molten metal is introduced into the mold and allowed to harden, after which the mold is removed.

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Alternative Methods for Custom Implant Production Utilizing a Combination of Rapid Prototyping Technology and Conventional Investment Casting, B.A. Weeden, A.P. Sanders, D.S. LaSalle, G.P. Trottier, Johnson & Johnson Professional, Inc., 325 Paramount Drive, Raynham, MA 02767, USA, Mar. 31, 1996.

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