Ultrasonic cleaning utilizes the socialization, acceleration, and direct flow effects of ultrasound in liquids to directly and indirectly disperse, emulsify, and peel off the dirt layer, achieving the purpose of cleaning. Currently, cavitation and direct flow are more commonly used in ultrasonic cleaning machines.
(1) Cavitation effect: Cavitation effect refers to the high-frequency transformation of ultrasonic waves into liquids through the interaction of compression force and decompression force at a rate of more than 20000 times per second. When the pressure is reduced, a phenomenon of vacuum nucleus bubbles is generated in the liquid. When the compression force is applied, the vacuum nucleus bubbles are crushed by the pressure and generate a strong impact force, thereby peeling off the dirt on the surface of the cleaned object and achieving precise cleaning.
(2) Direct flow effect: The phenomenon of ultrasonic waves flowing along the direction of sound propagation in liquid is called direct flow. When the sound wave intensity is 0.5W/cm2, a straight flow can be seen with the naked eye, which generates a flow perpendicular to the vibration surface with a flow velocity of about 10cm/s. Through this direct flow, the micro oil dirt on the surface of the cleaned object is stirred, and the cleaning solution on the dirt surface also generates convection. The solution that dissolves the dirt mixes with the new liquid, accelerating the dissolution rate and playing a significant role in the transportation of dirt.
(3) Acceleration: 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 action of ultrasonic waves to impact particles for ultra precision cleaning of dirt.
Shopping Cart