How to select the power and frequency of ultrasonic cleaning machine?Date: 2022-10-14Number: 174
Many people also do not know how to choose the appropriate cleaning of their own products ultrasonic cleaning machine, some customers buy the ultrasonic cleaning machine after the cleaning is not clean; Some customers feel that the product is damaged after cleaning, but this is very likely you picked the wrong, the ultrasonic cleaning machine cleaning frequency is not suitable for their own products. Today to tell you about the different frequency of the ultrasonic cleaning machine, what is different.
01 the basic principle of ultrasonic cleaning machine
The principle of ultrasonic cleaning machine mainly through the transducer, the power of ultrasonic frequency source into mechanical vibration of the sound energy, according to the tank wall will be ultrasonic radiation into the tank cleaning fluid. Because of the ultrasonic radiation, so that the micro-bubbles in the tank liquid can be under the influence of sound waves and then maintain vibration. Destroy the waste and cleaning surface of the adsorption, causing the waste layer of fatigue damage so be separated, gas-type bubble vibration on the solid surface to clean. As the name suggests-the use of solution medium process generated in the cavitation effect to achieve the goal of cleaning.
02 single-frequency/dual-frequency ultrasonic cleaning machine what is the difference?
For example, a 28 khz ultrasonic wave can be transmitted alone or at a single frequency; if there are two frequencies, 28 khz and 40 khz, it can be converted and used, even at a dual frequency. 28 khz means 28,000 vibrations per minute, the same as 40 khz.
Although single-frequency ultrasonic cleaning machines are now widely used on the market (industrial ultrasonic cleaning machines, large-scale ultrasonic cleaning machines, household ultrasonic cleaning machines and other special equipment) , most ultrasonic cleaning machines use a single frequency of 28 khz, 40 khz and other frequencies, but whether it is using high-frequency or low-frequency ultrasound, it can usually only work at this fixed frequency point, the single nature of the work, it can not meet some units (pharmaceutical, biological laboratories, scientific research institutions, etc.) sometimes need to use two or more frequency needs.
The dual-frequency ultrasonic cleaning machine is exactly the integration of high-frequency ultrasonic and low-frequency ultrasonic advantages of each other, it can be for different cleaning needs to convert different frequencies, the utility model not only completes the multi-purpose of one machine, but also saves the cleaning cost, and eliminates the cumbersome use of several special equipment to replace the actual operation.
03 low/high frequency ultrasonic cleaning machine what is the difference?
Common ultrasonic cleaning equipment operating frequency is usually in the range of 20 khz-120 khz, and each special equipment can only stick to a frequency point near.
When the ultrasonic frequency is low, the wavelength is too large, the cavitation bubbles produced are thick, the intensity is relatively high, and the impact force on the surface of the workpiece is too large, in addition, because the wavelength is too large, the uniformity of sound field distribution in the tank is also weak, so the lower frequency ultrasonic cleaning equipment is more suitable for cleaning the surface of heavy stains or difficult to clean the product workpiece.
When the ultrasonic frequency is high, the wave length is short, the cavitation small bubble is fine, the strength is relatively low, the impact force on the workpiece surface is very small, because the wave length is small, the cavitation small bubble is fine, therefore, the sound field throughout the more balanced, and the penetration of sound waves to enhance the dispersion of small solid waste emulsion level.