| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding method and a friction stir welding apparatus for reducing vibration at a time of starting friction stir welding.SOLUTION: A method comprises: a step of butting and fixing base materials 6 to each other; a step of forming a notch part 10 in an end portion of each of butt parts of the base materials; and a step of sandwiching the base materials between shoulders 23 provided on respective two ends of a probe 22 while rotating a tool 11 that has the probe and the shoulders; pressing the probe against the butt parts; and welding the butt parts along a weld line 7 by means of friction stir welding from the notch parts, a width of each notch part is larger than a diameter of the probe and smaller than a diameter of each shoulder, and a depth of each notch part is half or generally half the diameter of the probe.SELECTED DRAWING: Figure 4 |
