Multi-piece vaporizable pattern for foundry castings

Details Multi-piece vaporizable pattern for foundry castings Multi-piece vaporizable pattern for foundry castings

B - Operations, Transporting

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22/166

B22D 23/00 (2006.01) B22C 7/02 (2006.01) B22C 9/04 (2006.01)

Patent

CA 1143923

MULTI-PIECE VAPORIZABLE PATTERN FOR FOUNDRY CASTINGS ABSTRACT OF THE DISCLOSURE A casting process is disclosed including the steps of fabricating a multi-piece pattern from cellular plastic material, assembling the pieces to form a pattern, coating the pattern with a magnesium silicate ceramic coating and imbedding the pattern in dry, loose sand within a box or flask. The box includes a plurality of perforated side walls and a sprue is connected to the pattern. - 1 -

336436

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