Apparatus and method for friction stir welding using filler material
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United States of America Patent
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Apr 8, 2003
Grant Date -
Mar 6, 2003
app pub date -
Sep 5, 2001
filing date -
Sep 5, 2001
priority date (Note) -
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Abstract
A friction stir welding tool includes a body having an upper surface defining an entrance opening and a lower surface, and a pin having a lower surface defining an exit opening, wherein the pin extends from the lower surface of the body. The friction stir welding tool further includes a passageway defined by the body and the pin from the entrance opening to the exit opening and is capable of allowing a filler material to pass therethrough. A friction stir welding method includes applying a frictional heating source to a workpiece to plasticize a volume of the workpiece and applying the frictional heating source to a filler material to plasticize the filler material. The method further includes introducing the filler material into the volume of the workpiece and incorporating the filler material into the volume of the workpiece.
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