Moulds for metal casting and sleeves containing filters for...

Details Moulds for metal casting and sleeves containing filters for... Moulds for metal casting and sleeves containing filters for...

B - Operations, Transporting

22

D

22/124, 22/142,

B22D 1/00 (2006.01) B22C 9/08 (2006.01)

Patent

CA 1304559

FS 1391 ABSTRACT A mould for metal casting has a mould cavity and a sprue communicating directly with the mould cavity and located in the sprue a sleeve of refractory material having a cellular ceramic filter fixed therein. The mould, which has no running system apart from the sprue, may be a sand mould or a metal die for producing castings by gravity or low pressure diecasting. The cellular ceramic filter may be a honeycomb type of structure having cells which extend between two outer surfaces of the filter or a structure having interconnecting cells such as a ceramic foam.

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