B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
22/145, 22/159,
B28B 7/28 (2006.01) B22C 9/10 (2006.01) C04B 35/48 (2006.01) C04B 35/632 (2006.01) C04B 35/634 (2006.01) C04B 41/52 (2006.01)
Patent
CA 1328033
ABSTRACT Ceramic Core for Investment Casting and Method for Preparation A fired ceramic core for use in aluminum investment casting, which will withstand steam autoclaving and which may be rendered water disruptible; comprising from about 20 to 50% by weight of one or more water soluble salts, together with inert ceramic fillers selected to meet desired thermoexpansion compatability for the shell with which said core is to be used; said core being vacuum impregnated with ethyl silicate and a cured phenolic resin.
577766
Capodicasa Frank A.
Kelkar Anant H.
Weinstein Jerry G.
First W-G Acquisition Corporation
Ridout & Maybee Llp
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