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How to choose the frequency of the ultrasonic cleaning machine in the laboratory?

Date: 2022-10-26Number: 239

Laboratory ultrasonic cleaning machine because of its better cleaning characteristics, is now favored by many consumers, the application. At this stage is widely used in all walks of life, to help enterprises deal with cleaning problems. But at present, many consumers know very little about the ultrasonic cleaning machine, it will cause some misunderstanding: the higher the frequency and power of ultrasound, the better the cleaning effect? Not really. Today, let's talk about the frequency and power of ultrasonic cleaning machine.


Selection of ultrasonic frequencies:

Low frequency: ultrasonic cavitation threshold and frequency has a certain relationship. The higher the frequency, the higher the cavitation threshold, the lower the frequency and the lower the cavitation threshold, the easier the cavitation occurs, which is beneficial for cleaning, but easy to damage and corrode the workpiece surface, therefore, the surface of the workpiece is not suitable for the selection of relatively low frequency, low-frequency ultrasonic cleaning is usually more suitable for large workpiece surface or waste and workpiece surface adhesion is high case. And the lower the frequency, the more intense cavitation, the resulting noise is relatively large.

High Frequency: high-frequency ultrasonic penetration is very strong, should clean the surface of the workpiece surface smoothness requirements are high or surface complex, blind holes, gaps quite a number of workpiece. High-frequency ultrasonic noise is also small, suitable for cleaning some precision parts, such as semiconductors, aircraft precision parts, etc. .

Economy: from the ultrasonic cleaning effect and economy to consider, usually select the frequency in 20 ~ 130 khz, the actual frequency should be selected by the corresponding experiment to determine.

Selection of ultrasonic power:

If the ultrasonic power is too high, the cavitation intensity in the liquid will increase greatly, which will easily lead to cavitation erosion on the surface of the workpiece, causing unnecessary trouble and loss to the workpiece, at the same time, the vibrating plate at the bottom of the tank will be damaged by cavitation erosion, which reduces the service life of the tank.

But ultrasonic cleaning power selection small, loss for a long time and did not thoroughly remove stains, is also not feasible.

Conventional ultrasonic cleaning in industrial applications, standard ultrasonic cleaning machine from 100W to 1500W range, the size of the object, in the determination of cleaning rhythm, based on the size of ultrasonic cleaning tank to determine the ultrasonic.

Above. Ultrasonic cleaning machine power is too large, cleaning efforts too strong, the greater the damage to the surface of the workpiece will be stronger, for the surface of the more vulnerable objects, we must carefully consider the power size. Finally, the greater the output power, the higher the price naturally, so do not blindly pursue high power, need to consider from the cost-effective perspective.