Ultrasonic transducers convert high-frequency oscillating electrical signals into high-frequency mechanical oscillations, which radiate in the form of longitudinal waves in the cleaning solution. During the half wave period of radiation wave expansion, the density of the cleaning solution is disrupted and numerous bubbles with diameters of 50-500 μ m are formed. This type of bubble is filled with solution vapor. During the half wave compression period, the bubble velocity closes, resulting in a local hydraulic impact of hundreds of Mpa. This phenomenon is called the “cavitation” effect. Under the continuous action of the “cavitation” effect, dirt on the surface or hidden parts of the workpiece is cracked and peeled off. Meanwhile, under the action of ultrasound, the penetration of the cleaning solution is enhanced; Intensifying pulsating stirring; Accelerated dissolution, dispersion, and emulsification; Thus thoroughly cleaning the workpiece.
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