Spin welding uses heat generated by the friction between two thermoplastic parts when one is held stationary as the other is rotated against it while under pressure to create a permanent bond at their interface. The process requires no consumables, is fast, and uses less energy than typical alternative joining methods. Spin welding requires a circular part to part interface/joint.
Features of spin welding include:
- High strength welds are attainable.
- Advantageous method for obtaining hermetic seals.
- End of weld cycle part orientation is possible with servo systems.
- Attention must be paid upfront to joint design interference tolerance and flash guarding.
- The top part that is driven must have drive or grip details/features.