B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 3/16 (2006.01) B22F 1/00 (2006.01) C22C 33/02 (2006.01)
Patent
CA 2254734
The present invention provides a method for making metal parts from metal powder compositions comprising an iron base metal powder and an amide lubricant. The method comprises the steps of compacting said composition, pre- sintering the compacted composition, compacting the compacted and pre-sintered composition, and sintering the recompacted composition. The metal parts have improved physical and mechanical properties.
La présente invention se rapporte à un procédé de fabrication de pièces métalliques à partir de compositions de poudres métalliques comportant une poudre métallique à base de fer et un lubrifiant à base d'amides. Ledit procédé consiste à compacter ladite composition, à effectuer un frittage préalable de la composition compactée, à compactée la composition pré-compactée et pré-frittée et à procéder au frittage de la composition recompactée. Les pièces métalliques ainsi produites présentent des caractéristiques physiques et mécaniques perfectionnées.
Gkn Sinter Metals Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
The Presmet Corporation
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