Disposable thin wall core die, methods of manufacture thereof and articles manufactured therefrom
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United States of America Patent
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Feb 10, 2009
Grant Date -
Jun 12, 2008
app pub date -
Dec 11, 2006
filing date -
Dec 11, 2006
priority date (Note) -
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status (Latency Note)
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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.sup.-1 and 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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