B - Operations – Transporting – 21 – C
Patent
B - Operations, Transporting
21
C
B21C 37/12 (2006.01) B23K 9/028 (2006.01) B23K 9/032 (2006.01) B23K 26/28 (2006.01) B23K 26/30 (2006.01) B23K 33/00 (2006.01)
Patent
CA 2727325
This invention relates to a process for the manufacture of an elongated tube, the process comprising the following steps: (a) forming a rotating temporary tube (1), the tube having a first end at which the tube is continuously produced and a second end opposite to the first end, by continuously supplying a flat, elongated metal strip to a guiding body, which guiding body is forming a helix from the strip in such a way that consecutive windings of the helix do not overlap, and helically welding the consecutive windings of the helix formed by the guiding body to each other, (b) cutting cylinders from the second end of the rotating temporary tube (1); and (c) welding the cylinders obtained in step (b) to each other to form the elongated tube. The invention further relates to the use of the elongated tube in a process for the manufacture of an elongated, multilayered tubular body.
La présente invention se rapporte à un processus pour la fabrication dun tube allongé, le processus comprenant les étapes suivantes consistant à : (a) former un tube provisoire rotatif (1), le tube comportant une première extrémité au niveau de laquelle le tube est produit de façon continue et une seconde extrémité opposée à la première extrémité, par lacheminement continu dune bande métallique allongée et plate vers un corps de guidage, ledit corps de guidage formant une hélice à partir de la bande dune manière telle que les enroulements consécutifs de lhélice ne se chevauchent pas, et par le soudage hélicoïdal mutuel des enroulements consécutifs de lhélice formée par le corps de guidage, (b) découper des cylindres à partir de la seconde extrémité du tube provisoire rotatif (1) ; et (c) souder les cylindres obtenus à létape (b) les uns aux autres pour former le tube allongé. Linvention se rapporte en outre à lutilisation du tube allongé dans un processus pour la fabrication dun corps tubulaire allongé à couches multiples.
Freeth Graham Dudley
Smith Richard James Anthony
Weil Wolfgang
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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