Low pressure injection molding of knife blades from metal...

B - Operations – Transporting – 22 – F

Patent

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B22F 3/22 (2006.01) B26B 9/00 (2006.01)

Patent

CA 2382798

A process for molding metal knife blades from powders and molding compositions therefor are disclosed. Parts produced by this process are formed near net shape without the need for machining or other finishing operations. The process comprises forming a mixture containing metal powders, a gel-forming material and an aqueous gel-forming material solvent, and molding the mixture in an injection molding machine under conditions of temperature and pressure to produce a self-supporting knife blade having a sharp edge.

L'invention concerne un procédé de moulage de lames de couteaux à partir de poudres et de compositions de moulage de celles-ci. Les éléments produits par ce procédé sont formés près de la cote désirée sans besoin d'usinage ou d'autres opérations de finition. Le procédé consiste à former un mélange contenant des poudres métalliques, un matériau gélifiant et un solvant gélifiant aqueux, et à mouler le mélange dans une machine de moulage par injection dans des conditions de température et de pression permettant de produire une lame de couteau autoportante présentant un bord aiguisé.

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