Low pressure injection molding of metal and ceramic powders...

B - Operations – Transporting – 29 – C

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B29C 33/38 (2006.01) B28B 7/34 (2006.01)

Patent

CA 2352157

A method for rapidly manufacturing soft tooling from organic polymer-based resins and reinforcement filler materials for use in an injection molding machine to make complex metal and ceramic parts from powders. The cost to produce the tooling is relatively low and the manufacturing time is relatively short compared to conventional processes for making metal tooling. The finished parts are near-net shape, requiring little or no machining, and have excellent sintered properties.

La présente invention concerne un procédé permettant de fabriquer rapidement de l'outillage souple à partir de résines à base de polymères organiques avec un renfort en matière de charge. Cet outillage est destiné à une machine de moulage par injection utilisé pour la réalisation de pièces en complexe métal et céramique à partir de poudres. Le coût de production de cet outillage est relativement faible, et le temps de fabrication en et relativement court, par comparaison au procédé conventionnel de fabrication de l'outillage en métal. Les pièces finies présentent une forme quasiment nette, ne nécessitant pratiquement pas de reprise d'usinage. Elles ont en outre d'excellentes propriétés de produit fritté.

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