Metal founding – Process – Shaping a forming surface
Patent
1996-04-24
1998-12-29
Batten, Jr., J. Reed
Metal founding
Process
Shaping a forming surface
164 30, 164 31, 164 34, 164 35, 164 45, B22C 702, B22C 904
Patent
active
058530444
ABSTRACT:
A wax article pattern having a cavity corresponding to a cavity in a metal article is provided. The cavity in the wax article pattern is filled with a slurry of ceramic core material. The slurry of ceramic core material is solidified to form a core. The wax article pattern is enclosed by ceramic mold material. The ceramic mold material is solidified to form a mold. The wax pattern is removed from the mold to leave an article mold cavity. The article mold cavity is filled with molten metal which is solidified to form the metal article. A passage in the metal article may be formed by a pin which extends from the wax article pattern into the cavity in the wax article pattern and is enclosed by the slurry of ceramic core material.
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patent: 4289191 (1981-09-01), Myllymaki
patent: 4384607 (1983-05-01), Wood et al.
patent: 4421153 (1983-12-01), Wilkinson et al.
patent: 4434835 (1984-03-01), Willgoose
patent: 5295530 (1994-03-01), O'Connor et al.
patent: 5296308 (1994-03-01), Caccavale et al.
Graham Lawrence D.
Wheaton Harold L.
Batten, Jr. J. Reed
PCC Airfoils, Inc.
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