Method for preparation of hollow metal castings and ceramic...

B - Operations – Transporting – 22 – C

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22/145, 6/46

B22C 1/00 (2006.01)

Patent

CA 1123169

METHOD FOR PREPARATION OF HOLLOW METAL CASTINGS AND CERAMIC CORES FOR USE IN SAME Abstract of the Disclosure Cores for use in the casting of hollow metal parts by directional solidification from temperatures which may exceed 2700°F, in which the strength, dimensional stability and shape of the core is maintained at such high temperatures by formu- lating the core to contain Cristobalite in an amount of at least 2.5% by weight.

333958

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