Laser cleaning has the cleaning characteristics of non-grinding, non-contact, no thermal effect and suitable for objects of various materials, and is considered to be the most reliable and effective solution. At the same time, laser cleaning can solve problems that cannot be solved by traditional cleaning methods.
There are many types of laser cleaning machines that can be cleaned, most of which are cleaning rust, paint stripping, and oil removal on metal materials. In the face of these different metal materials and different stains, you can choose different ones according to the actual situation. Laser cleaning method.
Due to the complex composition and structure of the attachments on the surface of the object, the mechanism of the laser acting on it is also different. The most commonly used theoretical models for explaining this are the following:
1. Phosgenation/photolysis:
The laser generated by the laser can be concentrated by the optical system to achieve a high degree of energy concentration. The focused laser beam can generate thousands of degrees or even tens of thousands of degrees near the focal point, which instantly vaporizes or decomposes the attachments on the surface of the object.
2. Light stripping:
The attachment on the surface of the object is heated and expanded by the action of the laser. When the expansion force of the attachment on the surface of the object is greater than the adsorption force between it and the substrate, the attachment on the surface of the object will be separated from the surface of the object.
3. Light vibration:
Use a higher frequency and power pulsed laser to impact the surface of the object to generate ultrasonic waves on the surface of the object. The ultrasonic waves return after impacting the hard surface of the lower layer and interfere with the incident sound waves, thereby generating high-energy resonance waves, causing the dirt to burst, crush, and This cleaning method can be used when it is separated from the surface of the substrate material, when the absorption coefficient of the laser beam between the object and the surface attachment is not much different, or the surface attachment will produce toxic substances after heating.
At present, there is no uniform standard for the structure of laser cleaning equipment. It is necessary to decide which machine to use according to the actual cleaning method, the type of substrate and dirt, and the effect of cleaning requirements. Only the appropriate laser cleaning machine is selected. In order to make it work and solve customer problems. However, they are still roughly the same in some basic structures. They use lasers to clear the rust, dirt, paint, etc. on the metal surface. They mainly include lasers, mobile platforms, real-time monitoring systems, semi/automatic control operating systems, and others. Auxiliary system and other parts.
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