Lubricant powder for powder metallurgy

B - Operations – Transporting – 22 – F

Patent

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B22F 1/00 (2006.01)

Patent

CA 2462848

The invention concerns new lubricants comprising a combination of a polyethylene ether and an oligomer amide and an improved metallurgical powder composition comprising a major amount of an iron-based powder and a minor amount of this new lubricant. Furthermore, the invention concerns a method requiring low ejection force and low ejection energy for producing green products having high green strength. The method comprises the steps of mixing an iron-based powder and optional additives with the new lubricant and compacting the obtained powder composition.

L'invention concerne de nouveaux lubrifiants contenant une combinaison d'un éther de polyéthylène et d'un amide oligomérique ainsi qu'une composition de poudre métallurgique améliorée contenant une quantité principale d'une poudre à base de fer et une petite quantité de ce nouveau lubrifiant. De plus, l'invention concerne un procédé nécessitant une faible force d'éjection et une faible énergie d'éjection pour produire des produits verts ayant une haute résistance à l'état vert. Le procédé comprend les étapes consistant à mélanger une poudre à base de fer et des additifs optionnels avec le nouveau lubrifiant et à compacter la composition de poudre obtenue.

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