Two parameter functions of ultrasonic mold, two main parameters of ultrasonic: frequency: F≥20KHz; power density: p=transmitting power (W)/transmitting area (cm2); usually p≥0.3w/cm2; spread in liquid Ultrasonic can clean the dirt on the surface of the object. The principle can be explained by the phenomenon of "cavitation":
When the pressure of the sound wave propagated by ultrasonic vibration in the liquid reaches one atmospheric pressure, its power density is 0.35w/cm2. At this time, the peak of the sound wave pressure of the ultrasonic wave can reach vacuum or negative pressure, but there is actually no negative pressure, so in the liquid A great pressure is generated to pull the liquid molecules into cavitation nuclei. This cavity is very close to a vacuum. It ruptures when the ultrasonic pressure is reversed. The strong impact caused by the rupture will knock down the dirt on the surface of the object. This shock wave phenomenon caused by the bursting of countless tiny cavitation bubbles is called "cavitation" phenomenon.
