| 摘要 |
PROBLEM TO BE SOLVED: To achieve friction stir welding of high quality.SOLUTION: A welding method includes a first friction stir welding process of carrying out friction stirring in a first welding range Rfrom one end side of a butt part J to a first point provided halfway to the butt part J, and a second friction stir welding process of carrying out friction stirring in a second welding range Rfrom a second point provided in a plasticization region belonging to the first welding range Rformed in the first friction stir welding process to the other end side of the butt part J. In the first friction stir welding process, a start position of the friction stirring in the first welding range Ris set on a tab part 3 arranged by the one end side of the butt part J. In the second friction stir welding process, an end position of the friction stirring in the second welding range Ris set on a tab part 2 arranged by the other end side of the butt part J opposite the one end side. |
