Ultrasonic welding occurs when a normal variable load is applied to the pieces to be welded and one part is vibrated against the other by a resonator stack consisting of the transducer, and the booster at the end of which the sonotrode is attached.
The sonotrode generates an ultrasound vibration between the parts. This intense vibration generates heat and consequently the thermoplastic materials melt, ensuring the part welding and assembly.
The ultrasonic generator provides a sinusoidal electrical waveform at a frequency of between 20 and 50 kHz. Sirius Electric builds systems with frequencies of 20 – 30 – 36 – 40 kHz