The selection of power for ultrasonic machine equipment should be based on the object to be cleaned. It is required to know the number of objects to be cleaned and the cleaning requirements, and a set of plans should be established,
The basic principle of ultrasonic cleaning machine:
The sudden change in sound pressure during the propagation of ultrasound in liquids causes strong cavitation and emulsification phenomena, producing millions of tiny cavitation bubbles per second. These bubbles rapidly and massively produce under the action of sound pressure, without continuing to explode violently, producing strong impact and negative pressure suction, which is enough to peel off stubborn dirt and kill bacteria and viruses.

1、 Power selection
The effectiveness of ultrasonic cleaning equipment is not necessarily proportional to the cleaning time of the power, and sometimes it takes a long time to remove dirt even with low power. If the power reaches a certain value, sometimes the dirt is quickly removed. If the power is too high, the cavitation intensity will be greatly increased, and the cleaning effect will be improved. However, at this time, more precise parts will also produce corrosion points, which is not worth the loss. Moreover, the vibration plate at the bottom of the cleaning cylinder will have severe cavitation and increased water point corrosion. When using organic solvents such as trichloroethylene, there is basically no problem. However, when using water or water-soluble cleaning liquids, they are prone to water point corrosion. If the surface of the vibration plate has been damaged, Under strong power, cavitation and corrosion are more severe underwater, so ultrasonic power should be selected according to actual usage conditions.
2、 Frequency selection
The frequency of ultrasonic cleaning equipment ranges from 28kHz to 120kHz. When using water or water cleaning agents, the physical cleaning force caused by cavitation is obviously advantageous for low frequencies, usually around 28-40kHz. For cleaning parts with small gaps, narrow gaps, and deep holes, it is better to use high frequencies (usually above 40kHz), even hundreds of kHz. When cleaning clock parts, use 400kHz. If broadband frequency modulation cleaning is used, the effect is better.
3、 Use of cleaning basket
When cleaning small items, a net basket is often used, and special attention should be paid to the ultrasonic attenuation caused by the mesh. When the frequency is 28kHz, it is better to use a mesh of 10mm or more.

 

 

 

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