Method for machining metal conduits to form a v-shaped...

B - Operations – Transporting – 23 – K

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B23K 26/14 (2006.01) B23K 9/028 (2006.01) B23K 33/00 (2006.01)

Patent

CA 2610488

The invention concerns a method for machining the ends of a metal conduit (1) for forming, when it is abutted with identical conduits, a pipeline pipe, to form at the plane of the parting line (3) with another identical conduit a V-shaped bevel. The invention is characterized in that it consists in cutting the ends of the conduit so that the profile of each end has at least one first cross-section, at the inner edge, designed to constitute part of the root face of the V-shaped bevel and an arc-shaped section linking said cross-section of the profile to a rectilinear section (5) inclined relative to the cross-section of said profile, at the outer edge of the tubular part. The invention is applicable to metal conduits, in particular for pipelines.

L'invention concerne un procédé d'usinage des extrémités d'un conduit métallique (1) destiné à former, lorsqu'il est mis bout à bout avec des conduits identiques, une canalisation de type pipeline, pour former au niveau du plan de joint (3) avec un autre conduit identique un chanfrein en V. L'invention consiste en ce qu'on découpe les extrémités du conduit de sorte que le profil de chaque extrémité présente au moins une première section droite, au bord intérieur, destinée à constituer une partie du talon du chanfrein en V et une section en arc de cercle reliant ladite section droite du profil à une section rectiligne (5) inclinée par rapport à la section droite de ce profil, au bord extérieur de la pièce tubulaire. L~application concerne des conduits métalliques, en particulier pour pipelines.

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