Knowledge | 2022-09-05

How to select the correct frequency for ultrasonic cleaning equipment


The cleaning effect of an industrial ultrasonic cleaning system depends on the high energy collapse of small cavitation bubbles formed by sound waves in cleaning fluid. When bubbles burst, they release a burst of energy that removes impurities and contaminants from the surface of the part to be cleaned. The higher the frequency, the shorter the bubble growth time between the compressed sound waves, and the smaller the bubble. Small bubbles have lower energy, but for given power input, there are more of them. Thus, high-frequency ultrasonic cleaning with a large number of tiny bubbles can provide a finely distributed gentle cleaning, while lower frequencies with fewer and larger bubbles can provide a more dynamic coarse-particle cleaning effect. Choosing the equipment that provides the correct frequency of ultrasonic cleaning for your application is the key to effective cleaning.

Low frequencies are used to clean metal and glass components

Kitai's industrial ultrasonic cleaning systems range in low frequencies from 26khz to 38khz. They can remove hard surface contaminants, but their high clean energy is not suitable for soft materials or precision parts. Typical items that can be cleaned using these systems are hard metal work parts, glass, jewelry, electrical wiring, and medical equipment.

Use it for precise cleaning

Kitai ultrasonic cleaning machine in the 78 kHz to 160 kHz range of medium frequency operation, can successfully clean less rugged parts and materials. Cleaning of hard drives, LCDs, solar cells and panels, aluminum components, quartz transducers, and ceramic components are typical applications. Also available are water resonance systems (WRS) that can be adjusted for clean water to optimize bubble formation and improve cleaning performance.

High frequency for gentle cleaning

In the range of 450khz to 950khz, high-frequency cleaning will be more accurate and will not damage the precision components. Jietai industrial ultrasonic cleaning machine can clean the complex surface made of soft materials and need to be handled carefully. Typical parts that are cleaned at these frequencies include semiconductor chips, electronic components, precision medical devices, and LEDs. Specially designed ultrasonic generators are used in conjunction with nozzles for directional cleaning of hard drive surfaces, Flat panel display glass, and semiconductor chips.

Flexible cleaning options

For industries with a wide range of cleaning applications, we should of course choose industrial ultrasonic cleaning machines operating at appropriate frequencies to perform cleaning tasks. But we do not require customers to buy a variety of different frequency products, but can provide the desired frequency of the operation of the cleaning system.

Blue whale's self-developed ultrasonic cleaning machine with a wide range of flexibility can handle a variety of cleaning applications in a unit, regardless of the cleaning requirements, we can all recommend the right frequency for you to get the most efficient cleaning solution.

How to select the correct frequency  for ultrasonic cleaning equipment