Ultrasonic Welding
Ultrasonic vibrations (typically 10-75kHz) are applied to the faces of the regions to be joined
These break up grease and oxide films and heat the interface region
Deformation and welding can then occur at a reduced pressure compared to a pressure weld
- Surfaces undergo reduced damage
- Useful for thin sections, bonding of wires on integrated circuits, splicing Al foil, etc.