Development of practical friction stir welding technique for small and medium enterprises

Tanaka, Tsutomu; Oki, Sachio; Taniguchi, Masateru; Shimonishi, Iwao; Nakata, Hisao; Higashi, Kenji

doi:10.2464/jilm.57.549

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“…[1][2][3] If FSW were to become capable of producing three-dimensional (3D) joints, it would be increasingly applicable in many industries. [4][5][6][7][8] However, it is difficult to maintain all welding parameters in appropriate permissible ranges because of the method's limited degrees of freedom for tool control. [9][10][11][12][13] Furthermore, it is also difficult for 3D welding to maintain the steady state of welding conditions as linear welding.…”

Section: Introductionmentioning

confidence: 99%

Optimum Processing and Tool Controls for Three-Dimensional Friction Stir Welding

Takahara

Tsujikawa

Chung³

et al. 2008

Mater. Trans.

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The influence of three-dimensional friction stir welding tool-control on joints' mechanical properties was investigated. Although FSW is widely applied to linear joints, it is impossible for five-axes FSW machines to maintain all FSW parameters in optimum conditions during threedimensional (3D) welding. Such 3D FSW joints should be produced according to an order of priority for FSW parameters. Butt joints with rectangular change in the welding direction on a curved plane (curved L butt joints) were welded using different three tool-control methods, which change various welding parameters. Results show that the A and C axes shortcut method is effective for 3D welding.

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