The higher the frequency, the higher the cavitation threshold. "Because the higher the frequency of ultrasonic waves, their energy will be very low, and there will not be much force to tear the liquid to form bubbles.". Therefore, high-frequency ultrasound is not easy to form cavitation bubbles in the liquid. In order to generate cavitation, it is necessary to increase the sound power.

Conversely, the lower the frequency, the easier it is to create cavitation. Moreover, the frequency is low, the time interval between tearing and pressing is much greater, and the generated bubbles have sufficient time to complete growth. From small to large, the impact force generated by blasting is greater, which is more conducive to cleaning.

High and low frequencies are like horses running very fast, but with little strength, they cannot pull too much weight; And cows run very slowly, but with great strength, pulling a large car can take a walk, actually every useful place.

According to the cleaning object, we can divide the ultrasonic frequency into three frequency bands: low frequency (20KHz - 50KHz), high frequency (50KHz - 200KHz), and ultra high frequency (700KHz - 1MHz or higher). At the same power, ultrasound at a frequency of 40KHz produces more cavitation bubbles than ultrasound at a frequency of 100KHz, which has a stronger penetration ability. However, it is easy to cause corrosion and damage on the surface of the instrument, and the noise is also significant.

Therefore, high-frequency ultrasound is suitable for cleaning precision and delicate instruments, while low-frequency ultrasound is suitable for cleaning large and robust instruments. Understand this knowledge, and believe that when using ultrasonic cleaning machines to clean items, you can choose the appropriate frequency to better play the role of ultrasonic cleaning machines.

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