B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
B22F 3/12 (2006.01) B22F 3/18 (2006.01) B22F 3/24 (2006.01) B22F 5/00 (2006.01) C22C 1/04 (2006.01)
Patent
CA 2594364
A method for producing a powder metal article having a three dimensional shape and having at least one densified surface comprising: a) providing a blend of powdered metals; b) compacting said blend to form a pre-form having a general shape of said article; c) sintering said pre-form; d) densifying at least one cylindrical surface region of said pre-form; and, e) forming said pre-form to a final density and into the three dimensional shape of said article.
La présente invention décrit une méthode d'élaboration d'un article métallique en poudre en trois dimensions et présentant au moins une surface densifiée. Ladite méthode comprend les étapes suivantes : a) obtention d'un mélange de métaux pulvérulents ; b) compactage dudit mélange afin d'obtenir une ébauche de la forme générale dudit article ; c) frittage de ladite ébauche ; d) densification d'au moins une zone de surface cylindrique de ladite ébauche ; et e) mise en forme de ladite ébauche, au cours de laquelle cette dernière acquiert sa densité définitive ainsi que la forme en trois dimensions dudit article.
David Huw
Jones Peter K.
Lawcock Roger
Fetherstonhaugh & Co.
Gates Canada Inc.
Stackpole Limited
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