40khz 20W Ultrasonic transducer for dental scalers,Household tooth cleaner and commercial medical tooth cleaner

Ultrasonic vibrator frequency selection technique

Ultrasonic oscillator

Everyone knows that the inside of the shock plate is composed of ultrasonic vibrators. When the cleaning machine operates at a low frequency (within the human hearing range), noise is generated. When the frequency is below 20 kHz, the working noise not only becomes very large, but may exceed the limits of safety noise as stipulated by occupational safety and health laws or other regulations. In applications where high power is required to remove dirt without regard to surface damage of the workpiece, lower cleaning machine frequencies from 20 kHz to 40 kHz are typically selected. Cleaning frequencies in this frequency range are often used to clean large, heavy-duty or high-density workpieces. The ultrasonic vibrator produced by Poda Ultrasonic has two fixed low frequency ultrasonic vibrators of 28KHZ and 40KHZ.

High frequencies are often used to clean smaller, more delicate parts or to remove tiny particles. High frequencies are also used in applications where damage is not allowed on the surface of the workpiece. The use of high frequencies improves cleaning performance in several ways. As the frequency increases, the number of cavitation bubbles increases linearly, producing more denser shock waves that allow them to enter smaller gaps. If the power remains constant, the cavitation bubbles become smaller and the energy released is correspondingly reduced, thus effectively reducing damage to the surface of the workpiece. Another advantage of high frequencies is the reduced viscous boundary layer (Ponuri effect), allowing the ultrasound to 'discover' very fine particles. And our high frequency ultrasonic vibrators are also 68KHZ, 80KHZ, 100KHZ, 120KHZ.

40khz 20W Ultrasonic transducer for dental scalers,Household tooth cleaner and commercial medical tooth cleaner