Investment casting molds and cores

Details Investment casting molds and cores Investment casting molds and cores

B - Operations, Transporting

22

C

B22C 9/10 (2006.01) B22C 9/00 (2006.01) B22C 9/18 (2006.01) B22C 9/24 (2006.01) B22D 19/00 (2006.01)

Patent

CA 2237390

Investment casting molds (110), and particularly mold cores (100), are formed of sintered ceramics to near net shape and are then machined to net shape, dimensions and surface finish, by ultrasonic machining with formed tools having final configuration in mirror image form. Form machining of find mold shells and cores is rapid, precise, readily controlled, and can produce castings of exceptional accuracy of shape, dimensions and surface finish.

L'invention a trait à des moules pour moulage à la cire perdue (110) et, notamment, à des noyaux de moule (100), façonnés avec des céramiques frittées près de la cote désirée, usinés ensuite à la forme, aux dimensions et au fini de surface désirés, par ultrasons, avec des outils de forme, pourvus d'une configuration définitive de symétrique. Cet usinage de forme de coques et de noyaux de moule cuits, qui est rapide, précis et aisément maîtrisable, est à même de donner des moulages d'une exactitude exceptionnelle au niveau de la forme, des dimensions et du fini de surface.

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