This solid-state joining process uses a non-consumable tool to generate frictional heat and mechanically intermix materials, creating a high-strength bond. Imagine stirring two colors of clay together until they are seamlessly blended this process achieves a similar result with metals. The specialized equipment uses a rotating pin and shoulder to soften and combine materials without melting them, unlike traditional welding methods.
The solid-state nature of this joining method offers significant advantages, including reduced distortion, superior weld quality, and the ability to join dissimilar materials that would otherwise be challenging to weld. Its development marked a notable advancement in joining technology, providing solutions for lightweighting in industries like aerospace and automotive where strong, reliable joints are critical. This innovation enabled the joining of previously unweldable aluminum alloys, opening new possibilities for design and manufacturing.
