Method and apparatus for friction stir welding

Details Method and apparatus for friction stir welding Method and apparatus for friction stir welding

B - Operations, Transporting

23

K

B23K 20/12 (2006.01) B23K 37/04 (2006.01)

Patent

CA 2285078

The invention concerns a friction stir welding method according to which the workpieces (2, 3) to be welded are positioned on a work-table (7) and by means of clamping means (5, 6) clamped to one another and/or to the work-table during the welding. A rotating welding means (12, 13) is arranged to move along a joint between the workpieces while being pressed against said workpieces during the welding. Additional heat is supplied to the joint prior to and/or during the welding operation, in excess of the frictional heat generated in the joint from the rotation of the welding means and of any other heat that may be supplied to the joint in any other manner by the welding means. The invention likewise concerns an apparatus for friction stir welding, comprising a heating element (70) for supply of additional heat to the joint prior to and/or during the welding operation, in excess of the frictional heat generated in the joint from the rotation of the welding means and of any other heat that may be supplied to the joint in any other manner by the welding means.

L'invention concerne un procédé de soudage par friction et déplacement cyclique, selon lequel les pièces (2, 3) à souder sont placées sur une table porte-pièces (7) et fixées les unes aux autres et/ou à la table porte-pièces par des dispositifs de serrage (5, 6) pendant le soudage. Un moyen de soudage (12, 13) rotatif est conçu pour se déplacer le long d'un joint situé entre les pièces tout en étant plaqué contre les pièces pendant le soudage. Un supplément de chaleur est transmis au joint avant et/ou pendant l'opération de soudage, en plus de la chaleur de friction produite dans le joint par la rotation du moyen de soudage et en plus de n'importe quelle autre chaleur pouvant être envoyée au joint de toute autre manière par le moyen de soudage. L'invention concerne également un appareil de soudage par friction et déplacement, comprenant un élément de chauffage (70) permettant de fournir un supplément de chaleur au joint avant et/ou pendant l'opération de soudage, en plus de la chaleur de friction produite dans le joint par la rotation du moyen de soudage et en plus de n'importe quelle autre chaleur pouvant être cédée au joint de toute autre manière par le moyen de soudage.

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