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Magical cavitation phenomenon

When it comes to ultrasonic cleaning, some people may think that it is the use of high-frequency vibration of ultrasonic waves to destroy dust and dirt. Actually, ultrasonic cleaning utilizes the cavitation effect of ultrasonic waves.

When ultrasonic waves are applied to liquids, a large number of small bubbles can occur. When the ultrasonic energy is high enough, the small bubbles (cavitation nuclei) present in the liquid vibrate, grow, and continuously gather sound field energy under the effect of the ultrasonic field. When the energy reaches a certain threshold, the cavitation bubbles will collapse and close rapidly, which is the ultrasonic cavitation effect.

The lifespan of bubbles generated by cavitation effect is about 0.1 μ s. When they collapse rapidly, they can release enormous energy and generate micro jets with a velocity of about 110m/s and strong impact force, resulting in a collision density of up to 1.5kg/cm2.

The energy released during the collapse of cavitation bubbles can cause rapid damage to the dust and dirt attached to the surface of the object, causing the dust and dirt to fall off.

And the cavitation bubbles are very small, so they can also enter the gaps that cannot be cleaned normally, to clean the dust and dirt. We often see that when ultrasonic cleaning machines clean glasses, we can always see a lot of smoke like dirt in the water, which is shocking.

In fact, this is due to the close contact between glasses and our face, which can be contaminated with a lot of oily dirt. These dirt will quickly disperse and emulsify during ultrasonic cavitation, just like smoke in water.

Article source: Jiangmen Ultrasonic Cleaning Machine m.wfdai.cn/