Method and device for friction stir welding with...

Details Method and device for friction stir welding with... Method and device for friction stir welding with...

B - Operations, Transporting

23

K

B23K 20/12 (2006.01)

Patent

CA 2414915

The aim of the invention is to achieve a method for friction stir welding, whereby the welding of alloys with high oxygen affinity and/or high plasticisation energy is possible and the heat flux from the welding location is easily controlled. Said aim is achieved whereby the cooling fluid from a cooling ring (2), moving with the pin tool (1), is physically limited to being sprayed on the trailing region and the lateral region of the welding location adjacent to the pin tool (1). Additionally, a gas jet (3) moving with the pin tool (1), blows cooling gas from the front against the pin tool (1) and against the cooling water escaping from the cooling ring (2).

L'objectif de la présente invention est de mettre au point un procédé de soudage par friction et agitation, qui permet de souder des alliages présentant une grande affinité avec l'oxygène et/ou une grande énergie de plastification et de commander facilement l'évacuation de chaleur à partir de l'emplacement de soudure. A cette fin, le liquide de refroidissement d'un anneau de refroidissement (2) connecté à l'outil à ergot (1) est appliqué localement sur la zone de traînée et sur les zones latérales de l'emplacement de soudure qui sont adjacentes à l'outil à ergot (1). De plus, une tuyère à gaz (3) connectée à l'outil à ergot libère du gaz de refroidissement, par devant, contre l'outil à ergot (1) et contre l'eau de refroidissement provenant de l'anneau de refroidissement (2).

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