Process of forming multi piece vaporizable pattern for foundry c

Details Process of forming multi piece vaporizable pattern for foundry c Process of forming multi piece vaporizable pattern for foundry c

1978-10-23

1980-12-23

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

106 3822, 106 3828, 164246, B22C 702, B22C 904

Patent

active

042404924

ABSTRACT:
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.

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patent: 3675708 (1972-07-01), Blazek

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