B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 1/00 (2006.01) B22F 3/22 (2006.01) C04B 35/622 (2006.01) C04B 35/634 (2006.01) C04B 35/636 (2006.01)
Patent
CA 2379178
Molding feedstock compositions for shaping parts from metallic and/or ceramic powders are disclosed. A novel process is disclosed for preparing metal and/or ceramic injection molding compounds in a continuous manner amenable to high volume manufacturing. The process comprises the steps of forming a mixture including metal and/or ceramic powders, a binder and a liquid carrier by supplying the components in a continuous manner to a twin screw extruder, forcing the homogeneous compounded mixture through an exit die, and cutting the extruded strand into pellets. The pellets are useful for shape-forming articles by various molding processes.
L'invention porte sur des compositions de charges de moulage prévues pour former des pièces à partir de poudres métalliques et/ou céramiques. L'invention porte également sur un nouveau procédé de préparation de composés de moulage par injection de pièces métalliques et/ou céramiques d'une manière continue de façon à parvenir à une production en grands volumes. Le procédé consiste à former un mélange comprenant des poudres métalliques et/ou céramiques, un liant et un support liquide en faisant passer en continu les composants dans une extrudeuse à deux vis, en poussant le mélange homogène dans une matrice et en découpant la bande extrudée en pastilles qui sont ensuite utilisées dans divers procédés de moulage.
Duyckinck Rick
Glandz George
Sesny Steven
Snow Brian
Alliedsignal Inc.
Gowling Lafleur Henderson Llp
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