JOINING METHOD AND METHOD FOR MANUFACTURING COMPOSITE ROLLED MATERIAL
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United States of America Patent
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Jan 12, 2016
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Feb 19, 2015
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Abstract
A joining method is capable of suitably joining metal members of different kinds. The joining method includes a step of preparing a first metal member having a first upper surface, a first lower surface and a first inclined surface connecting the first upper surface and the first lower surface, and a second metal member having a second upper surface, a second lower surface and a second inclined surface connecting the second upper surface and the second lower surface. The second metal member has a higher melting temperature than the first metal member. A butting interface is formed by butting the first inclined surface and the second inclined surface. The first and second metal members are joined by moving a rotary tool along the butting interface while the rotary tool is inserted from the first upper surface and a stirring pin is in contact with the first metal member.
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