Ultrasonic transducer:

A device that can convert high-frequency electromagnetic energy into mechanical kinetic energy, usually of the magnetostrictive type and piezoelectric ceramic type. The power supply is output to the ultrasonic generator and then to the ultrasonic transducer. Usually, ultrasonic waves can be generated through the ultrasonic wave derivation device. It is often used in machinery and equipment such as ultrasonic cleaning machines, ultrasonic plastic welding machines, chlorination machines, gas cameras, and has been widely used in agriculture and animal husbandry, industrial

20khz Replacement Ultrasonic Welding Transducer Ultrasonic Converter For Welding Machine