Friction stir welding processcess

Details Friction stir welding processcess Friction stir welding processcess

B - Operations, Transporting

23

K

B23K 20/12 (2006.01)

Patent

CA 2649767

The invention relates to a process for the friction stir welding of two panels (20, 21), using a welding device (25) having a retractable pin (29), comprising the following steps: positioning the two panels (20, 21) so as to be in contact over an overlap region (24) and keeping them in the desired relative position after welding; bringing the welding device into contact with the upper panel at the start of the welded joint; longitudinally welding the two panels, by moving the welding device as far as the end of the welded joint; continuing to move the welding device (25) along a path extending beyond the end of the welded joint; and retracting the retractable pin (29) so as to prevent the appearance of a weld hole in a portion of the path of the welding device (25) extending beyond the end of the welded joint.

L'invention concerne un procédé de soudage par friction malaxage de deux panneaux (20, 21), utilisant un dispositif de soudage (25) à pion rétractable (29), comportant les étapes suivantes : - positionner et maintenir les deux panneaux (20, 21) en contact suivant une zone de recouvrement (24) dans la position relative voulue après soudage, - amener le dispositif de soudage (25) au contact du panneau supérieur (21) au début du joint soudé, - souder longitudinalement les deux panneaux (20, 21) en déplaçant le dispositif de soudage (25) jusqu'à l'extrémité de fin du joint soudé, - poursuivre le déplacement du dispositif de soudage (25) suivant une trajectoire s' étendant au-delà de l'extrémité de fin du joint soudé, - rétracter le pion rétractable (29), de manière à éviter l'apparition d'un trou de soudure, dans une portion de la trajectoire du dispositif de soudage (25) qui s'étend au-delà de l'extrémité de fin du joint soudé.

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