Friction stir welding tools are one of the key and core technologies of friction stir welding and are known as the "heart" of friction stir welding. A series of Friction stir welding tools have been developed for different fields such as aerospace, aviation, ships, rail transit, and automobiles.

Advantages of Friction stir welding tools:
1. Has good mechanical properties in the welded state.
2. Increased safety due to no toxic fumes or splashing of molten material.
3. Easy automation on a simple mill - lower setup costs, less training.
4. Since there is no weld pool, it can be operated in all positions (horizontal, vertical, etc.).
5. Typically, good weld appearance and minimal under/over match of thickness, thus reducing the need for expensive post-weld machining.
6. Thinner materials with the same joint strength can be used.
7. Low environmental impact.
8. Shifting from fusion to friction improves overall performance and cost.
The above is an introduction to the advantages of Friction stir welding tools, I hope to help you.