The lower the ultrasonic frequency, the more simple the cavitation generated in the liquid, the greater the intensity, the stronger the role, suitable for the workpiece rough, dirty, the first wash, the higher the frequency of the ultrasonic direction is strong, suitable for precision object cleaning, so the frequency of commonly used automatic ultrasonic cleaning equipment is 28khz, 40khz.
The advantages of automatic ultrasonic cleaning equipment Comparison of a variety of other cleaning method, automatic ultrasonic cleaning equipment showing the huge superiority, especially in the fruit of the specialization, collectivization enterprise, has gradually with the baptism of automatic ultrasonic cleaning equipment to replace the traditional washing and scrubbing of vibration, pressure washing, cleaning and steam cleaning method, Automatic ultrasonic cleaning equipment of high efficiency and high cleanliness, thanks to its sound waves in the medium to convey when penetrating impact and cavitation effect, so it is simple with mixed and disorderly appearance, inner cavity and fine empty parts clean clean, to the general oil removal, rust, phosphating process, under the effect of ultrasonic wave can end with two or three minutes, Its speed can advance several times, even dozens of times than the traditional method.
First, how to choose the power of automatic ultrasonic cleaning equipment.
When the power of automatic ultrasonic cleaning equipment is large, the sound intensity will increase, the radius and the starting radius of the cavitation bubble will increase, and the cavitation intensity will increase. That is, the higher the sound intensity, the stronger the cavitation, which is conducive to cleaning. But it is not the greater the power, the better the cleaning effect, but the correct and reasonable choice of ultrasonic power. The higher the sound power is, the more significant the cavitation effect will be. A lot of useless bubbles will be generated, which will increase the diffraction attenuation and form the sound barrier. The higher the sound intensity, the more nonlinear attenuation will affect the cleaning effect of the parts to be cleaned away from the sound source.
In addition, the cavitation corrosion of the cleaning vibration plate becomes more serious, and the life of the equipment becomes shorter. Ultrasonic cleaning power selection is small, will affect the workpiece cleaning time, constitute a long cleaning time or cleaning error. Therefore, when we choose ultrasonic cleaning equipment, the general height of the workpiece is less than 30cm. When the height of the inner groove of the ultrasonic cleaning equipment is about 40cm, the single vibration plate at the bottom can be selected, and the power is maintained at 0.3~0.5W per square centimeter. Assuming that the workpiece is too large, perhaps the amount of each cleaning is too much, the height of the tank we choose is more than 40cm, which is generally calculated according to the power, and the general choice is 11W /L.
Two, how to choose the frequency of automatic ultrasonic cleaning equipment.
The primary frequency for industrial ultrasonic cleaning is 25khz-40khz; High precision working of semiconductor wafer and liquid crystal glass can choose 60khz-120khz frequency; KHZ represents the number of oscillations per second in frequency, but the value varies with the temperature of the liquid.
Wavelength: using resonant liquid level depth test to wash the cleanness contrast conclusion. City water or DI water or alkaline washing solution recommended liquid depth
Ultrasonic frequency: 25KHZ: the recommended liquid level depth is an integer multiple of 29mm
Ultrasonic frequency: 28KHZ: the recommended liquid level depth is an integer multiple of 2927mm
Ultrasonic frequency: 40KHZ: recommended liquid level depth of 21mm integer multiple liquid depth
The above is hongkai to you about "how much is the frequency range of automatic ultrasonic cleaning equipment and how to choose the frequency" of an introduction, if you have other related questions, welcome to consult!