How do users choose ultrasound?
The low-frequency ultrasonic cleaning machine is easy to wash the exterior of the workpiece, and it is not suitable for washing the parts with high surface finish, and the cavitation noise is large. The frequency around 40KHZ, under the same sound intensity, the number of cavitation bubbles generated is more than the frequency of 20KHZ, and the penetrating power is strong. It is better to clean the workpiece with large shape or blind hole, and the cavitation noise is small, but cavitation The strength is low, and it is appropriate to wash the dirt and the weaker appearance of the parts to be washed. The high-frequency ultrasonic cleaning machine is used for computer and micro-electronic components. The megahertz ultrasonic cleaning machine is used for the cleaning of integrated circuit chips, silicon wafers and wave films. It can remove micron and sub-micron dirt and wash the parts. There is no damage. Therefore, from the washing results and economic considerations, the frequency is usually selected in the range of 20-130KHZ, so the accurate selection of the frequency is critical, and the selection of the frequency of the detailed compliance must be affirmative. The ultrasonic cavitation threshold and the frequency of the ultrasonic wave have a relative relationship. The higher the frequency, the higher the cavitation valve. In other words, the ultrasonic cleaning machine has a low frequency, and the cavitation is more likely to occur, and the liquid is compressed and has a longer time interval in the low frequency environment, and the negative bubble can grow to a larger size before the collapse, increasing the cavitation. Strength, which is good for washing.
