Manufacture of foundry moulds and cores

Details Manufacture of foundry moulds and cores Manufacture of foundry moulds and cores

B - Operations, Transporting

22

C

22/10, 22/158

B22C 15/08 (2006.01) B22C 9/03 (2006.01) B22C 15/23 (2006.01)

Patent

CA 1060628

ABSTRACT A method and apparatus for preparing sand-based foundry moulds and cores, particularly of the cold-setting type made from a sand/binder/catalyst mixture. After the introduction of the sand mixture into a mould or core box, sealing means is located over an open end or the box to enclose the mixture within the box, and suction is applied to the box. The sealing means may comprise a flexible diaphragm, which is drawn by the suction against the adjacent upper surface of the mixture to compact the mixture.

231352

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