With the continuous innovation of cleaning technology, ultrasonic cleaning machines have stood out in line with the social trend and gradually been applied to various industries. Demand determines supply. When there are more buyers, there are also more sellers. To a certain extent, this has affected the ultrasonic cleaning machine market, and the quality is inevitably uneven. So as a buyer, how should we safeguard our legitimate interests and correctly select a satisfactory cleaning machine?
    Indicator 1: Cleaning Solution Temperature
    The cleaning machine wraps heating electric heating wires around the outside of the cleaning tank for temperature control. When the temperature rises, cavitation is prone to occur, so the cleaning effect is better. When the temperature continues to rise, the gas pressure inside the bubble increases, causing the impact sound pressure to decrease, which reflects the multiplicative effect of these two factors. The most suitable cleaning temperature for water cleaning solution is 40-60℃.
      Indicators Two and Five: Regarding the amount of cleaning solution and the determination of the position of the parts to be cleaned
Generally, it is best for the liquid level of the cleaning solution to be more than 100mm above the surface of the vibrator. Due to the influence of the standing wave field on the single-frequency cleaning machine, the amplitude at the nodes is very small and the amplitude at the amplitudes is large, resulting in uneven cleaning. Therefore, the best choice for cleaning items should be placed at the amplitude.
        Indicators Three and Six: Selection of Ultrasonic Cleaning Process and Cleaning Solution       The following three factors should be taken into consideration: 1. Cleaning efficiency: When choosing the most effective cleaning solvent, experiments must be conducted. If ultrasonic waves are introduced into the existing cleaning process, the solvents used generally do not need to be changed. 2. Simple operation: The liquid used should be safe and non-toxic, easy to operate and have a long service life. 3. Cost: The cost of using the cheapest cleaning solvent is not necessarily the lowest. When in use, factors such as the cleaning efficiency of the solvent, its safety, and the maximum utilization rate of how many workpieces can be cleaned with a certain amount of solvent must be taken into consideration. Of course, the selected cleaning solvent must meet the requirements for cleaning.     Indicator Four: Power Selection     The cleaning effect of ultrasonic waves is not necessarily proportional to (power and time). Sometimes, even with low power and a long time spent, the dirt cannot be removed. And if the power reaches a certain value, sometimes the dirt can be removed very quickly. If the selected power is too high, the cavitation intensity will increase significantly. Although the cleaning effect is improved, it will also cause corrosion points on more precise parts, which is not worth it. Moreover, the cavitation at the bottom of the cleaning tank and the vibration plate is severe, and the water point corrosion also increases. When using organic solvents such as trichloroethylene, there is basically no problem, but when using water or water-soluble cleaning solutions, it is prone to water point corrosion. If the surface of the vibration plate has been damaged, the cavitation corrosion at the bottom of the water will be more severe under high power. Therefore, the ultrasonic power should be selected according to the actual usage situation.
      Indicator Five: Frequency Selection     The ultrasonic cleaning frequency ranges from 28kHz to 120kHz. When using water or water-based cleaning agents, the physical cleaning force caused by cavitation is obviously more favorable for low frequencies. Generally, around 28 to 40kHz is used. For cleaning parts with small gaps, narrow slits and deep holes, high frequency (generally above 40kHz) is better, and even several hundred kHz. When cleaning watch parts, use 400kHz. If wideband frequency modulation cleaning is used, the effect will be even better.
      Indicator 6: Use of Cleaning Baskets     When cleaning small parts and items, a mesh basket is often used. Special attention should be paid as the mesh can cause ultrasonic attenuation. When the frequency is 28khz, it is better to use a mesh size of 10mm or more.
      Clarifying the six major indicators of ultrasonic cleaning machines is of great benefit and no harm in choosing cleaning machines to serve us.