1. Cavitation effect

空化作用就是超声波以每秒两万次以上的压缩力和减压力交互性的高频变换方式向液体进行透射。在减压力作用时，液体中产生真空核群泡的现象，在压缩力作用时，真空核群泡受压力压碎时产生强大的冲击力，由此剥离被清洗物表面的污垢，从而达到精密洗净目的。

Cavitation is the high-frequency transformation of ultrasonic waves into a liquid through the interaction of compression force and pressure reduction at least 20000 times per second. During pressure reduction, a phenomenon of vacuum core bubbles is generated in the liquid. When compressed, the vacuum core bubbles generate a strong impact force when crushed by pressure, thereby stripping the dirt on the surface of the cleaned object and achieving precision cleaning.

在超声波清洗过程中，肉眼能看见的泡并不是真空核群泡，而是空气气泡，它对空化作用产生抑制作用降低清洗效率。只有液体中的空气气泡被完全脱走，空化作用的真空核群泡才能达到效果。

During the ultrasonic cleaning process, the visible bubbles are not vacuum core bubbles, but air bubbles, which inhibit cavitation and reduce cleaning efficiency. Only when the air bubbles in the liquid are completely removed can the vacuum core bubble of cavitation achieve its effect.

2.直进流作用

2. Direct inflow effect

超声波在液体中沿声的传播方向产生流动的现象称为直进流。声波强度在0.5W/cm2时，肉眼能看到直进流?垂直于振动面产生流动，流速约为10cm/s。通过此直进流使被清洗物表面的微油污垢被搅拌，污垢表面的清洗液也产生对流，溶解污物的溶解液与新液混合，使溶解速度加快，对污物的搬运起着很大的作用。

The phenomenon of ultrasonic waves flowing in the direction of sound propagation in a liquid is called direct inflow. When the sound wave intensity is 0.5W/cm2, can the naked eye see the direct inflow? Flow is generated perpendicular to the vibrating surface, with a flow rate of approximately 10cm/s. Through this direct inflow, the micro oil and dirt on the surface of the cleaned object are stirred, and the cleaning solution on the dirt surface also generates convection. The dissolved solution of the dirt is mixed with the new solution, which accelerates the dissolution rate and plays a significant role in the transportation of the dirt.

3.加速度作用

3. Acceleration effect

液体粒子推动产生的加速度。对于频率较高的超声波清洗机，空化作用就很不显著了，这时的清洗主要靠液体粒子超声作用下的加速度撞击粒子对污物进行超精密清洗。

The acceleration generated by the propulsion of liquid particles. For high-frequency ultrasonic cleaning machines, the cavitation effect is not significant. At this time, the cleaning mainly relies on the acceleration of liquid particles under the ultrasonic action to impact particles for ultra precision cleaning of dirt.

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