An Improved Tool For Friction Stir Welding Process To Produce Aluminum To Aluminum Butt Weld Joints

Abstract: The invention relates to an improved tool for friction stir welding process to produce aluminum to aluminum butt weld joints comprising a support body rotatable about a first axis, the support body having an end defining a shoulder; and a rotatable pin extending from the end of the support body downward from the shoulder, wherein the shoulder of the support body is flattened, with the flat portion extending from an outer edge of the support body downward toward the rotatable pin, wherein the flattened shoulder includes a face having flat surface, and wherein the shoulder diameter is limited to twice the diameter of the rotating pin.   { FIGURE 1 }

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