Method of joining together dissimilar metal members
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United States of America Patent
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app pub date -
Aug 4, 2006
filing date -
Aug 4, 2006
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Abstract
A method of joining together dissimilar metal members, by superposing a first member formed of an aluminum plate and a second member formed of a steel plate on each other, and performing a friction stir welding operation by rotating a probe located coaxially with and at an end of a shoulder member of a rotary tool, while the probe is inserted into the first member in a way that a tip of the prove reaches right above the second member, wherein a double-acting rotary tool is used as the rotary tool, and after the friction stir welding operation is performed, the probe is removed from thus formed friction stir zone while a probe hole formed by the removal of the prove is filled by a material flown from another part of the friction stir zone other than a part, from which the probe is removed.
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