1. The direct and repeated impact of steam cavitation on the dirt layer, on the one hand, destroys the adsorption of dirt on the surface of the cleaned part, and on the other hand, it can also cause fatigue damage to the dirt layer and detach from the surface of the cleaned part.

2. Microbubbles (cavitation nuclei) that exist in liquids vibrate under the action of the sound field. When the sound pressure reaches a certain value, the bubbles will quickly grow and then suddenly close. The shock water wave generated when the bubbles close can generate a pressure of hundreds of megapascals around them, damaging insoluble dirt and dispersing them in the cleaning solution.

3. For solid particles wrapped in oil stains, due to the effect of ultrasonic cavitation, the two liquids rapidly disperse and emulsify at the interface. Solid particles fall off immediately.

4. The vibration of gas bubbles scrubs the solid surface. Once there are cracks in the dirt, the bubble liquor can "drill into the cracks and vibrate, causing the dirt layer to fall off. For example, the oxide layer liquor on the workpiece can be easily peeled off by the bubbles.

5. The micro jet generated by ultrasonic cavitation at the interface between solid and liquid can exit or weaken the convenient dirt layer, increase stirring effect, accelerate the dissolution of soluble dirt, and strengthen the cleaning effect of chemical cleaning agents.

6. During the oscillation process, cavitation bubbles themselves will be accompanied by a series of second-order phenomena, such as radiative torsion. The radiation torque acts on the liquid itself in a uniform liquid, resulting in the circulation of the liquid itself, which is called streaming. This sound flow can act on a larger scale or be limited to

In the smaller range of micrometers, the latter is often referred to as micro acoustic flow, which can cause the surface of vibrating bubbles to be at a high velocity gradient and viscous stress. This stress can sometimes reach over 100Pa, which is enough to cause damage to the surface of the workpiece and cause it to fall off.