| 摘要 |
A friction stir welding tool is used in welding structures. The tool comprises a shoulder and a probe extending from the shoulder. The probe has at least three sections equiangularly arranged around the longitudinal axis of the probe, each section comprising at least three contiguously arranged flats arranged about the axis of the probe. The flats are so arranged that the normal axes of the flats converge in a direction towards the axis of the probe thereby resulting in the sections each having a generally convex shape. The probe also includes a threaded portion disposed between each pair of adjacent generally convexly shaped unthreaded sections. |
