Sintered metal parts with homogeneous distribution of...

B - Operations – Transporting – 22 – F

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B22F 3/15 (2006.01) B22F 7/06 (2006.01)

Patent

CA 2438397

The invention relates to a sinter metal part with a homogeneous distribution of non-homogeneously melting components, essentially comprising non- homogeneously melting non ferrous metal powder mixtures, produced in the following manner: continuous isostatic pressure sintering of the starting material to obtain densities which substantially correspond to the density of a high-temperature isostatically pressed solid having the same composition, using die in conditions avoiding the occurrence of a liquid phase in powder at temperatures of up to 70 % of the metal melting point, preferably up to 60 % of the metal melting point, forming a sinter profile substantially possessing a final contour.

La présente invention concerne une pièce en métal fritté ayant une répartition homogène de composantes à fusion non homogène, constituée principalement de mélanges de poudres métalliques non ferreuses à fusion non homogène. Ladite pièce peut être par frittage sous pression isostatique continu du matériau de départ, pour obtenir des densités qui correspondent sensiblement à la densité d'un corps solide comprimé par voie isostatique à chaud de même composition, par l'intermédiaire d'une matrice, dans des conditions qui permettent d'éviter l'apparition d'une phase liquide dans la poudre, à des températures valant jusqu'à 70 % du point de fusion du métal, de préférence jusqu'à 60 % du point de fusion du métal, pour former un profil fritté qui possède pratiquement ses contours définitifs.

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