FRICTION STIR TOOL, METHOD FOR MANUFACTURING THE SAME, AND FRICTION STIR METHOD

摘要

A load-optimized friction-stir tool, particularly a two-shoulder friction-stir welding tool, includes a first tool body and a pin formation projecting from the first tool body with a smaller outer diameter compared to the outer diameter of the first tool body. The first tool body and the pin formation are integrally formed and the pin formation has a material distribution in cross section that is different from a uniform distribution over a circular shape. A method for manufacturing the friction-stir tool and a friction-stir method that can be executed with the friction-stir tool are also disclosed.