PROCESS OF AND DEVICE FOR FRICTION STIR WELDING OF AT LEAST TWO WORKPIECES OF DIFFERENT MATERIALS WITH A SLIDABLE PIN AND CURRENT PASSING THROUGH THE WORKPIECES

摘要

Joining together two parts made of different materials using a friction stir welding tool comprising a shoulder (2) and a probe (3) that can be displaced axially from a projecting position to a retracted position comprises overlapping the parts, rotating the shoulder and probe, advancing the probe through the upper part (6) into the lower part (7), retracting the probe and passing current through the parts. An independent claim is also included for a friction stir welding tool as above in which the probe has shaped elements, especially on the end.