众所周知，超声波清洗物品优势明显，那么超声波到底是如何完成清洗工作的呢？超声波清洗是利用超声波在液体中的空化作用、加速度作用及直进流作用对液体和污物直接、间接的作用，使污物层被分散、乳化、剥离而达到清洗目的。目前所用的超声波清洗机中，空化作用和直进流作用应用得更多。

As we all know, the advantages of ultrasonic cleaning are obvious, so how does ultrasonic finish the cleaning work? Ultrasonic cleaning is to use the cavitation, acceleration and direct inflow of ultrasonic in the liquid to directly and indirectly affect the liquid and dirt, so that the dirt layer is dispersed, emulsified and stripped to achieve the purpose of cleaning. At present, cavitation and direct inflow are more widely used in ultrasonic cleaning machines.

山东超声波清洗机

 Shandong ultrasonic cleaning machine

（1）空化作用：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。

(1) Cavitation: cavitation is the ultrasonic transmission to the liquid by the interaction of compression force and pressure reduction of more than 20000 times per second. When the pressure is reduced, the vacuum core group bubbles appear in the liquid. When the compression force is applied, the vacuum core group bubbles will produce strong impact force when they are crushed by pressure, so as to peel off the dirt on the surface of the object to be cleaned, so as to achieve the purpose of precise 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佳效果。

In the process of ultrasonic cleaning, the bubbles visible to the naked eye 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 cavitation core group achieve the best effect.

（2）直进流作用：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。

(2) Straight into the flow: ultrasonic in the liquid along the direction of sound propagation flow phenomenon known as straight flow. When the acoustic intensity is 0.5w/cm2, the direct inflow can be seen by naked eyes, and the flow is perpendicular to the vibration surface, and the velocity is about 10cm / s. Through this direct inflow, the micro oil and dirt on the surface of the object to be cleaned is stirred, and the cleaning fluid on the surface of the dirt also generates convection. The dissolving solution of the dirt is mixed with the new liquid to accelerate the dissolution speed, which plays a great role in the transportation of the dirt.

（3）加速度：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。

(3) Acceleration: the acceleration caused by liquid particles pushing. For the ultrasonic cleaning machine with high frequency, the cavitation effect is not significant. At this time, the cleaning mainly depends on the acceleration of liquid particles under the ultrasonic effect to impact the particles on the dirt ultra precision cleaning.