Friction stir welding apparatus

Details Friction stir welding apparatus Friction stir welding apparatus

B - Operations, Transporting

23

K

B23K 20/12 (2006.01)

Patent

CA 2550541

The invention illustrates and describes an apparatus for friction stir welding, having a pin and a first friction surface segment, the pin and the first friction surface segment being rotationally driven about an axis of rotation, and the first friction surface segment having a first friction surface for resting on a workpiece. The object of providing a friction stir welding apparatus which can be used to better set the energy which is introduced into the workpiece by way of the friction between pin and friction surface, on the one hand, and workpiece, on the other hand, is achieved by virtue of the fact that a first inner segment is provided, having a first inner friction surface for resting on a workpiece, that the first inner segment surrounds the pin, that the first friction surface segment surrounds the first inner segment, and that the first friction surface segment is rotationally driven independently of the first inner segment.

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