Temperature measurement in friction stir welding | Smart tool holder | Stirweld

[@geraldotomas8490]

Hello, my name is Geraldo. At minute 1:52, I see that the structure to be welded has some holes, perhaps made simply by a drill, what would be the reason for these holes in the structure to be welded? Is there any benefit? Also, is there any material on the function of these holes?

[@Stirweld]

Hello, the little holes you see before welding are called tack-welding. It's done with the tip of the FSW tool and helps hold the cover in place for friction stir welding. Once the weld is complete, there's no more sign of these holes in the material!

[@geraldotomas8490]

Thanks for the answer