Frequency selection of ultrasonic cleaning machine

At low frequencies, the duration of liquid compression and tension increases; Therefore, the generation time and volume of cavitation are also long, and the impact force generated when cavitation closes is proportional to the size of the cavitation bubble. So the lower the frequency, the stronger the cavitation.
And the frequency we use for industrial cleaning is generally less than 60KHz, with the most commonly used being between 20-40KHz. By using a frequency of around 20KHz, a relatively small number of cavitation bubbles can be obtained, but with high cavitation intensity and accompanied by noise, which can be used to clean workpieces with high bonding strength between the surface of large components and objects.
At a frequency of around 40KHz, under the same sound pressure, a large number of cavitation bubbles are generated, but the cavitation intensity generated when broken is low, the noise is small, and the penetration ability is strong. It is suitable for workpieces with complex surfaces, blind holes, dirt, and weak surface adhesion.