Metal founding – Process – Shaping a forming surface
Reexamination Certificate
2006-12-11
2009-02-10
Lin, Kuang (Department: 1793)
Metal founding
Process
Shaping a forming surface
C164S369000
Reexamination Certificate
active
07487819
ABSTRACT:
Disclosed herein is a method comprising injecting into a thin wall disposable core die a slurry having a viscosity of about 1 to about 1,000 Pascal-seconds at room temperature when tested at a shear rate of up to 70 seconds−1and a flow index of less than 0.6 at a pressure of up to about 7 kilograms-force per square centimeter; wherein the thin wall disposable core die has an average wall thickness of about 1.5 to about 10 millimeters; curing the slurry to form a cured ceramic core; removing the thin wall disposable core die from the cured ceramic core; and firing the cured ceramic core to form a solidified ceramic core.
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Edgar Marc Thomas
Estill Eric Alan
Lee Ching-Pang
Leman John Thomas
Wang Hsin-Pang
Clarke Penny A.
General Electric Company
Lin Kuang
LandOfFree
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