The main mechanism of Xinwandesheng ultrasonic cleaning equipment is the effect of ultrasonic cavitation. The strength of ultrasonic cavitation is related to acoustic parameters, the physical and chemical properties of the cleaning solution, and environmental conditions. Therefore, to achieve good cleaning results, it is necessary to choose appropriate acoustic parameters and cleaning solution. The selection of 21 sound intensity or sound pressure will only result in negative pressure in the cleaning solution when the amplitude of the alternating sound pressure exceeds the static pressure of the liquid. The negative pressure needs to exceed the strength of the liquid in order for cavitation to occur. The low sound intensity or sound pressure amplitude that causes liquid cavitation is called the cavitation threshold. Various liquids have different cavitation thresholds, and the sound intensity in the ultrasonic cleaning tank needs to be higher than the cavitation threshold in order for ultrasonic cavitation to occur. For general liquids, the cavitation threshold is about 13 watts per square centimeter (the square root of sound pressure is proportional to the sound intensity). As the sound intensity increases, the ratio of the large radius to the initial radius of the cavitation bubble increases, and the cavitation intensity increases. That is, the higher the sound intensity, the stronger the cavitation, which is beneficial for cleaning. But the higher the sound power, the better. If the sound intensity is too high, a large number of useless bubbles will occur, increasing scattering attenuation and forming a sound barrier. At the same time, an increase in sound intensity will also increase nonlinear attenuation, which will weaken the cleaning effect far away from the sound source. For some difficult to clean dirt, such as oxides on the metal surface and dirt in the holes of chemical fiber spinnerets, a higher sound intensity is required for cleaning. At this time, the cleaned surface should be close to the sound source. In most cases, slot type washers are not used. Instead, a rod shaped focusing transducer is used to directly pull out the cleaning solution and clean it near the surface of the cleaning part

 

 

 

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