Power selection for ultrasonic cleaning machines.

When selecting an ultrasonic cleaner, the focus is often on the output power. Generally speaking, the actual cleaning effect of ultrasonic cleaning is not necessarily proportional to the product of output power and cleaning time.

If the ultrasonic cleaner's output power is low, even with prolonged use, it won't completely remove stains; conversely, a higher output power can quickly remove stains in a short time but may also cause some damage to the item being cleaned. Therefore, when selecting an ultrasonic cleaner, it's crucial to choose the appropriate output power.

At high output power, the vibration plate at the bottom of the cleaning tank experiences severe cavitation, and the risk of pitting corrosion increases. If trichloroethylene or similar solvents are chosen, there may be no issues, but opting for water or water-soluble cleaning solutions can lead to pitting corrosion.

In summary, when selecting an ultrasonic cleaner, it's crucial to choose and match the output power to ensure effective cleaning.

Ultrasonic cleaners have always been known for their impressive cleaning performance, ease of operation, and are highly favored by many. But you might have just heard about this equipment, and how it works is irrelevant. So, here's a guide on how to select the power and frequency for this ultrasonic cleaner; let's take a look.

1 When power is too high.

Ultrasonic cleaners with higher power exhibit increased sound intensity, larger cavitation bubble radius, and stronger cavitation intensity. In other words, the higher the sound intensity, the stronger the cavitation, which is beneficial for cleaning. However, while higher power generally results in better cleaning, it is crucial to select the ultrasonic power correctly and reasonably.

2 Low power deviation.

The higher the acoustic power, the more pronounced the cavitation effect becomes, resulting in a large number of unnecessary bubbles, increased diffraction attenuation, and the formation of an acoustic barrier. Additionally, with higher sound intensity, nonlinear attenuation increases, which can affect the cleaning efficiency of parts further away from the sound source. Moreover, the cavitation of the cleaning vibration plate is more severe, leading to a shorter equipment lifespan. If the ultrasonic cleaning power is too low, it can affect the cleaning time of the workpiece, resulting in longer cleaning times or deviations in cleaning quality.

3. Power options.

Therefore, when selecting ultrasonic cleaning equipment, the workpiece height is generally below 30cm, so the equipment's height in the tank is about 40cm, with a single vibration plate at the bottom, and the power maintained at 0.3 to 0.5w per square centimeter. If the workpiece is too large or the cleaning volume is too high each time, the water tank height we choose is above 40cm, typically calculated by increasing the power, usually at 11W/L.

1. The impact of high-frequency and low-frequency effects.

Ultrasonic cavitation thresholds are closely related to frequency. The higher the frequency, the higher the cavitation threshold. The lower the frequency, the lower the cavitation threshold, and the greater the likelihood of cavitation. At low frequencies, liquids are compressed and diluted over long intervals. This allows bubbles to grow to larger sizes, enhancing cavitation strength, which is beneficial for cleaning. Therefore, low-frequency ultrasonic cleaning is generally used for large components or when dirt has a strong adhesion to the workpiece surface. However, it can easily damage and corrode the workpiece surface. Therefore, components with high surface quality requirements should not use lower frequencies. Lower frequencies also produce more noise. Choose the frequency based on different circumstances.

High-frequency ultrasonic waves have strong penetration and are suitable for cleaning parts with high surface finish requirements or complex surfaces with many blind holes. On the other hand, high-frequency ultrasonic noise is also low, making it ideal for cleaning delicate parts such as electronic components, small bearing processing, and magnetic materials. For special workpieces like integrated circuit chips, higher frequency ultrasonic cleaning is suitable for silicon wafer electroplating. For large workpieces like car engines and valves, low-frequency ultrasonic cleaning should be chosen. Considering the effectiveness and cost-effectiveness of ultrasonic cleaning, the frequency is generally selected between 20 kHz and 130 kHz. The specific frequency selection should be determined through corresponding experiments.

Here are some power and frequency options for ultrasonic cleaners, hoping they are helpful to you. Ultrasonic cleaners are applied in many fields with very significant effects. To maintain this performance, we should carry out daily maintenance of the machine, promptly repair any faults, and ensure the cleaning machine's operational performance.