The Importance of Choosing Ultrasonic Frequency
Noise is produced when the working frequency is very low (within the range of human hearing). When the frequency is lower than 20kHz,the working noise not only becomes very high, but may exceed the safety noise limit stipulated by the Occupational Safety and Health Law or other regulations. In applications where high power is required to remove dirt without considering the surface damage of the workpiece, a lower cleaning frequency ranging from 20kHz to 30kHz is usually chosen. The frequency of cleaning within this frequency range is often used to clean large, heavy or high density materials.
High-frequency is usually used to clean smaller, more sophisticated 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 frequency can improve cleaning performance in several ways. As the frequency increases, the number of cavitation bubbles increases linearly, producing more intense shock waves that allow them to enter smaller gaps. If the power remains constant and cavitation bubbles decrease, the energy released by cavitation bubbles will decrease correspondingly, which effectively reduces the damage to the workpiece surface. Another advantage of high frequency is that it reduces the viscous boundary layer, allowing ultrasonic to detect extremely small particles.This situation is similar to that of small rocks at the bottom of a clear stream when the water level in the stream drops. Products with a frequency of 350kHz can be selected when cleaning extremely small particles.
Find a precise ultrasonic coating solution?
Click Altrasonic Technology to realize it
