In general, when purchasing ultrasonic cleaning machines, the first is to understand what ways their products can be washed, the second is to achieve a kind of cleaning effect, the third is expected to develop the production of their own company will reach how much, to buy the maximum capacity of the machine is how much, the fourth step is to understand the cleaning process, ask their peers what kind of process, Or consult the ultrasonic manufacturer has no updated cleaning process, the fifth is to choose some professional production enterprises for cleaning process, price and after-sales service guarantee comparison, the sixth is to sign the contract to do the equipment used in the material brand model, consumable prices, maintenance terms and so on written into the contract agreement, to prevent some bad production enterprises fraud, the seventh is acceptance, If it is a large equipment, you should try to take your workpiece to the production enterprise to the site acceptance, the eighth is the installation of the training of your company's staff, you are sure that your staff is really learned rather than the installer said has been trained.
Power selection
Ultrasonic cleaning sometimes uses small power and takes a long time without removing dirt. If the power reaches a certain value, the dirt will be removed quickly. If the power is too large, the cavitation strength will be greatly increased, although the cleaning effect is improved, but at this time the more sophisticated parts also produce corrosion points, and the bottom vibration plate of the cleaning machine cavitation is serious, water point corrosion is also increased, in the use of trichloroethylene and other organic solvents, basically no problem, but the use of water or water-soluble cleaning solution, easy to be affected by water point corrosion, If the surface of the vibrating plate has been scarred, the cavitation corrosion under the strong power is more serious, so the ultrasonic power should be selected according to the actual use.
Frequency selection
Ultrasonic cleaning frequency from 28kHz to 120kHz, in the use of water or water cleaning agents caused by the physical cleaning force is obviously favorable to the low frequency, generally using 28-40kHz. For parts with small gaps, slits and deep holes, it is better to use high frequency (generally above 40kHz), or even several hundred kHz. When cleaning watch parts, use 100kHz. If the broadband frequency modulation cleaning, the effect is better.
The use of cleaning baskets
In the cleaning of small parts, often use the net basket, because the mesh to cause ultrasonic attenuation, to pay special attention. When the frequency is 28khz, it is better to use more than 10mm mesh.
The temperature of the cleaning solution
The most suitable cleaning temperature of water cleaning solution is 40-60 ° C, especially in cold weather if the low cavitation effect of cleaning solution temperature is poor, the cleaning effect is also poor. Therefore, some cleaning machines wrap heating wires around the outside of the cleaning cylinder for temperature control, and cavitation is easy to occur after the temperature rises, so the cleaning effect is better. When the temperature continues to rise, the gas pressure in the cavity increases, causing the impact sound pressure to decrease, and the effect will be weakened. The organic solvent cleaning solution should be cleaned at a temperature close to the boiling point.
Determine the amount of cleaning fluid and the location of cleaning parts

Generally speaking, the liquid level of the cleaning liquid is more than 100mm above the surface of the vibrator. Because the single frequency cleaning machine is affected by the standing wave field, the amplitude at the node is small, and the amplitude at the wave amplitude is large, resulting in uneven cleaning. Therefore, the best choice of cleaning items should be placed at the amplitude. (more effective range 3-18 cm)