Friction stir welding as a rivet replacement technology
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United States of America Patent
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Aug 24, 2004
Grant Date -
Jun 26, 2003
app pub date -
Aug 12, 2002
filing date -
Sep 3, 1999
priority date (Note) -
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Abstract
The present invention provides an improved method and apparatus for joining aluminum allow panels (eg. 2090-T83 aluminum lithium alloy). The method preliminarily positions two panels and skin panels next to each other so that a stringer panel overlaps a skin panel. A friction stir weld pin tool penetrates through one panel and at least partially into another panel. The panel material around the pin tool is frictionally heated.
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