The Difference Between Laser Cleaning and Ultrasonic Cleaning

Laser cleaning is the use of laser irradiation on the surface of the substrate to produce a change in the coefficient of thermal expansion to peel off the dirt from the surface of the substrate, and because the laser used in the laser rust cleaning machine generates tens of millions of oscillations during the cleaning process, it is peeled off The dirt will be shattered by the laser. We also need to adjust the appropriate cleaning parameters so that the substrate will not be damaged by the laser during the cleaning process, and it can be cleaned without damage. Ultrasonic cleaning uses the direct and indirect effects of ultrasonic cavitation, acceleration and direct flow in the liquid on the liquid and dirt, so that the dirt layer is dispersed, emulsified, and peeled to achieve the purpose of cleaning. At present, the ultrasonic cleaning, cavitation and direct flow effect used in traditional cleaning methods are more used. What is the difference between laser cleaning and ultrasonic cleaning?

The ultrasonic cleaner uses the alternating frequency signal emitted by the ultrasonic generator, which is converted into an alternating frequency mechanical oscillation by the transducer and propagated to the medium-the cleaning liquid. The strong ultrasonic wave is dispersed in the cleaning liquid in the form of dense and dense phases. Wash the object radiation. Produce “cavitation” phenomenon, that is, the form of “bubbles” in the cleaning liquid, resulting in rupture. When the “cavitation” reaches the moment when the surface of the washed object is broken, an impact force of far more than 1000 atmospheric pressure is generated, which causes the dirt in the surface, hole and gap of the object to be dispersed, cracked and peeled off, so that the object can be purified and cleaned.

Laser cleaning technology refers to the use of high-energy laser beam irradiation workpiece surface, make the surface of dirt, rust spots or coating instantaneous evaporation or peeling, high speed and effective removal of cleaning object surface attachment or surface coating, so as to achieve a clean process. It is based on the laser and material interaction effect of a new technology, compared with the traditional mechanical cleaning method, chemical corrosion cleaning, liquid solid strong impact cleaning, high frequency ultrasonic cleaning and other traditional cleaning methods, has obvious advantages.Laser cleaning and ultrasonic cleaning of the difference between laser cleaning operation is very convenient, general hand wash, do not need any medium can be directly to cleaning of surfaces, for large area cleaning and precision parts cleaning effect is good, working temperature in – 5 ℃ ~ 50 ℃ are available and ultrasonic need to add the detergent, the higher the power density of the ultrasonic wave, the stronger the cavitation effect, The faster the speed, the better the cleaning effect, but for the precise surface finish of very high objects, using a long time of high power density cleaning will produce cavitation, corrosion on the surface of the object, using 50°C~70°C working temperature. Handheld laser cleaning machine has the advantage of not contacting with the cleaning material. Ultrasonic cleaning method is close cleaning, cleaning the surface of the object has a mechanical force, easy to damage the surface of the object. Laser cleaning is a kind of non-contact processing, which can be conveniently operated from a long distance.

The above is the difference between laser cleaning and ultrasonic cleaning. Compared with traditional cleaning methods such as ultrasonic cleaning and chemical corrosion cleaning, laser cleaning has obvious advantages. It is efficient, fast, low-cost, and has low thermal load and mechanical load on the substrate. The cleaning is non-damaging; it does not harm the health of the operator; the cleaning process is easy to realize automatic control and realize remote remote control cleaning. If you want to know more about laser rust cleaning machine, please contact senfeng.

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