Ultrasonic weld systems use a specially designed converter to change source frequency electrical energy into high frequency reciprocating compressional energy (vibration) generally in the range of 20-40 kHz.
The converter is designed around several piezoelectric elements. In line with the high power requirements of modern ultrasonic metal weld systems, these piezoelectric elements employ polycrystalline electrostrictive materials capable of handling the power required, and simultaneously deliver the amplitude needed to accomplish metal welding. The conversion efficiency of these piezoelectric elements is better than 95%.
