B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 3/04 (2006.01) C22C 1/10 (2006.01)
Patent
CA 2600274
The invention mainly concerns a method for preparing metal-matrix composites including at least steps of cold-process isostatic compaction of previously mixed powders (5) and of hot-process uniaxial pressing of the compact (12) resulting from the previous step. The inventive method enables metal-matrix composites with improved properties to be obtained. The invention also concerns a device for implementing in particular the isostatic compaction step comprising a latex sheath (1) wherein the mixture of powders (5) is poured, a perforated cylindrical container (2) wherein is arranged the latex sheath (1), and means (7, 10, 11) for sealed insulation of the mixture of powders (2) contained in the sheath (1).
L'invention concerne principalement un procédé de préparation de composites à matrice métallique comprenant au moins les étapes de compaction isostatique à froid de poudres préalablement mélangées (5) , et de pressage uniaxial à chaud du compact (12) obtenu à l'étape précédente. Le procédé de l'invention permet d'obtenir des composites à matrice métallique à propriétés améliorées. L'invention concerne également un dispositif pour mettre en AEuvre notamment l'étape de compaction isostatique comprenant une gaine en latex (1) dans laquelle est versé le mélange de poudres (5), un récipient cylindrique perforé (2) dans lequel est disposée la gaine en latex (1), et des moyens d'isolation hermétique (7, 10, 11) du mélange de poudres (5) contenu dans la gaine (1).
Forges de Bologne
Mcfadden Fincham
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