What is an ultrasonic horn?

The ultrasonic horn is an important component of the ultrasonic vibration system. Its main function in the vibration system is to amplify the particle displacement or velocity of the mechanical vibration and concentrate the ultrasonic energy on a smaller area, i.e., energy concentration. Therefore, it is also called an ultrasonic variable speed rod or ultrasonic energy concentrator.

As the name implies, the ultrasonic horn is a functional component that cooperates with the ultrasonic transducer to change the amplitude of ultrasonic vibration. Its main functions are to change the amplitude of the transducer (generally increase it), increase the vibration speed ratio, improve efficiency, improve the mechanical quality factor, enhance heat resistance, expand the temperature range, and extend the service life of the transducer.

The ultrasonic transducer adjusts the load matching between the transducer and the ultrasonic tool head by installing an ultrasonic horn, reduces the resonant impedance, makes it work at the resonant frequency, improves the electroacoustic conversion efficiency, effectively reduces the heat generation of the ultrasonic transducer, and increases the service life.