Pulsed laser cleaning machine and continuous laser cleaning machine are two common laser cleaning equipment. Although they can all be used for cleaning and decontamination, their working principle, scope of application and safety are very different. This article will introduce and compare the two laser cleaning machines in detail.
First, the working principle
1, pulse laser cleaning machine
Pulsed laser cleaning machine is to clean the surface of the object by making the laser emit high power short pulse laser beam. In the cleaning process, the laser beam only lasts for a short time, generally at the nanosecond level, and its power is as high as tens of millions of watts, which can instantly produce high temperature, and instantly evaporate or destroy the dirt, so as to achieve the cleaning effect.
2, continuous laser cleaning machine
The continuous laser cleaning machine cleans the surface of the workpiece by continuously emitting a laser beam. Compared with the pulse laser cleaning machine, the laser power it uses is low, the laser beam is not as strong as the pulse laser, and the cleaning effect on the surface is not as good as the pulse laser cleaning machine.
Second, Scope of application
1, pulse laser cleaning machine
Because the power of the pulsed laser cleaning machine is very high, it is suitable for cleaning the surface of metal materials that require particularly high cleaning effect, such as aluminum alloy, steel and so on. Moreover, because of the high temperature and high pressure instantaneously generated by the pulsed laser, the surfaces and objects that need to be treated should be relatively hard in order to better withstand this high temperature and high pressure.
2, continuous laser cleaning machine
Compared with pulsed laser cleaning machines, continuous laser cleaning machines have lower power, so they are suitable for workpiece surfaces that require less stringent cleaning accuracy and surface finish. Moreover, due to the long cleaning time of the continuous laser cleaning machine, it can clean the surface of plastics, glass and other materials that are easy to deform.
Third, Security
1, pulse laser cleaning machine
Since the cleaning power of the pulsed laser cleaning machine is very high, it is necessary to pay high attention to safety when using. If the laser shines directly on the human body, it may cause serious harm to the human body.
2, continuous laser cleaning machine
Continuous laser cleaning machine cleaning power is low, so the safety factor is relatively high. When used, it is only necessary to avoid direct exposure of the laser beam to the human body.
Fourth, Advantages and Disadvantages
1, the advantages and disadvantages of pulsed laser cleaning machine
The main advantage of pulsed laser cleaning machine is that the cleaning effect is good, it can quickly remove surface dirt, and it is suitable for metal products with high requirements for cleaning effect. The disadvantage is that the price is high, the equipment is complex, and professional personnel are required to operate and maintain, and there are security risks.
2, the advantages and disadvantages of continuous laser cleaning machine
The main advantages of continuous laser cleaning machine are simple equipment, easy maintenance, can clean the surface of many materials, and high safety. The disadvantage is that the cleaning effect is not as good as the pulse laser cleaning machine, and the use effect is not good for the workpiece surface with higher accuracy and surface finish requirements.
Fifth, Conclusion
In summary, there are great differences between pulsed laser cleaning machines and continuous laser cleaning machines in terms of working principle, scope of application and safety. The choice of what type of laser cleaning machine should be determined according to the characteristics of the required cleaning material. At the same time, the operator should pay attention to safety during use to avoid harm to the human body.