20kHz 15kHz Ultrasonic Transducer for Ultrasonic Welding System

20kHz 15kHz Ultrasonic Welder Transducer

The ultrasonic transducer, also commonly referred to as a converter, converts high frequency electrical

 vibrations into a mechanical longitudinal vibration with a constant output amplitude.

What all ultrasonic welding converters have in common is their central assembly with solid piezoceramic 

four-disk technology. Between each of the disks is a thin metal plate. This forms the electrode, which feeds 

the transducer with a sinusoidal electrical signalAs they receive the signal, the discs expand and contract, 

which produces resonant mechanical motion. The rigid decoupling principleallows for axial and transverse forces.

 When used in conjunction with boosters and sonotrodes, the energy generated is transmitted to thermoplastic

 work pieces to weld them together. These piezoelectric devices also can be used on materials that require this unique

 type of energy to undergo chemical or physical changes. Special manufacturing processes ensure extremely 

long service life at constant output amplitude.

Ultrasonic transducer is a device that converts energy into ultrasonic sound waves (typically above 20 kHz, 

which is beyond the range of human hearingzand vice versa. These transducers operate 

using the principle of piezoelectricity, where materials produce an electrical charge in response to 

mechanical stress or vice versa.The transducer in ultrasonic welding typically operates at frequencies ranging from

 15 kHz to 70 kHz, with 20 kHz and 15kHz being the most common in industrial applications.

Key Components:

Piezoelectric Material: The core of the transducer. When an alternating current is applied to it, it vibrates and produces ultrasonic waves.

Backing Material: Reduces the vibrations from the back of the transducer to improve the resolution of the produced ultrasound.

Acoustic Matching Layer: Matches the acoustic impedance of the piezoelectric material with the medium (such as air, water, or tissue) 

to minimize reflection and maximize the transmission of sound waves.

Electrodes: Apply electrical signals to the piezoelectric material.