With the progress of technology, the development of the times ultrasonic cleaning machine cleaning effect is getting better and better, but inevitably, people are more and more demanding on the efficiency of the cleaning machine, so how to make maximum use of the conditions at hand, to enhance the cleaning effect of ultrasonic cleaning machine?
How to use ultrasonic cleaning equipment scientifically and improve cleaning efficiency?
1、 the choice of cleaning agent
The correct choice of cleaning agent according to the different cleaning objects. Cleaning agents are generally divided into water-based (alkaline) cleaning agents, organic solvent cleaning agents and chemical reaction cleaning agents. Usually used for water-based cleaning agents.
And there are many ultrasonic cleaning agent, the market is a mixed product is innumerable, so how to choose a suitable product is very critical.
When we buy ultrasonic cleaning agent, we must first ask the relevant technical personnel, in order to confirm that the product is suitable for the case of choice, and to have a reliable after-sales service, otherwise it is easy to generate many problems.
2、Choose the temperature of the cleaning solution
Cleaning temperature is an important factor affecting the cleaning speed, appropriate to improve the temperature of the cleaning fluid, can enhance the cavitation capacity, shorten the cleaning time, but more than a certain temperature, due to the corresponding increase in steam pressure instead of making the cavitation effect is reduced, so we must maintain a certain temperature range, such as water solvent cleaning fluid is generally about 45 ℃, trichloroethylene cleaning fluid at about 75 ℃. The choice of cleaning fluid must consider the choice of cleaning fluid viscosity to be small, the surface tension should be small to facilitate the cavitation of the cleaning fluid.
3、 ultrasonic intensity (power density) selection
That is, the sound power per unit area. Ultrasonic cleaning effect depends on the cavitation effect, and the cavitation effect of ultrasonic strength. In general, the unit area of sound power more than 0.3W/cm 2 (output power is generally greater than 1W) aqueous solution can produce cavitation. In a certain range, the greater the ultrasonic intensity, the more obvious the cavitation effect, that is, the better the cleaning effect. But too high power density will be too strong due to cavitation and cause surface erosion of the workpiece so that the parts are damaged. In addition, when the power density increases to a certain extent will appear saturation phenomenon, the cleaning effect will decline. Generate cavitation power density threshold and frequency and the relationship, the higher the frequency, the greater the power density of cavitation, for example, 16 – 20KHz, power density threshold is about 0.3 – 0.4W/cm2; 26 – 30KHz, power density is selected for 0.5 – 0.8W/cm2; 30 – 40KHz, power density should be selected for 1 – 1.2 W/cm2 .
4、ultrasonic cleaning machine frequency selection
Ultrasonic vibration frequency has a great impact on the cleaning effect, which is due to the ultrasonic frequency for the cavitation effect is very influential reason. Practice has proved that the same power, low frequency is easy to stimulate cavitation. That is, the lower the frequency, the better the effect of cavitation, but the greater the noise. Conversely, the higher the frequency, the worse the effect of cavitation, the less noise.