Electric induction brazing in an inert atmosphere

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 1/002 (2006.01) B23K 1/008 (2006.01) B23K 1/012 (2006.01)

Patent

CA 2703755

Apparatus and method are provided for an electric induction brazing process in an inert atmosphere using a substantially oxygen free copper alloy filler or preform under an inert atmosphere within a brazing chamber minimally sized for containment of the brazed joint region and an induction coil. The inert atmosphere may be nitrogen gas supplied from a liquid nitrogen source. For brazing of an open interior fitting around a hole in a tubular material a nesting area is provided around the hole for seating of the filler or preform and the fitting.

L'invention concerne un appareil et un procédé destinés à fournir un processus de brasage par induction électrique dans une atmosphère inerte à l'aide d'un matériau de remplissage en alliage de cuivre pratiquement exempt d'oxygène ou une préforme sous atmosphère inerte à l'intérieur d'une chambre de brasage de dimensions minimales à des fins de confinement de la zone de brasure forte et d'une bobine d'induction. L'atmosphère inerte peut être de l'azote gazeux fourni à partir d'une source d'azote liquide. Pour le brasage d'une garniture intérieure ouverte autour d'un trou dans un matériau tubulaire, une zone d'emboîtement, permettant de recevoir le matériau de remplissage ou la préforme et la garniture, est prévue autour du trou.

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