Laser cleaning utilizes the characteristics of high energy density, controllable direction, and strong convergence ability of laser beams to disrupt the binding force between pollutants and the substrate or directly vaporize pollutants for decontamination, reducing the bonding strength between pollutants and the substrate, and ultimately achieving the effect of cleaning the surface of the workpiece. When the pollutants on the surface of the workpiece absorb the energy of the laser, they quickly vaporize or instantaneously expand upon heating, overcoming the interaction force between the pollutants and the substrate surface. Due to the increase in heating energy, the pollutant particles vibrate and detach from the substrate surface.

Comparison of advantages of laser cleaning

1. Environmental advantages

Laser cleaning is a "green" cleaning method that does not require the use of any chemical agents or cleaning liquids. The waste generated from cleaning is mostly solid powder, with a small volume, easy storage, recyclability, no photochemical reactions, and no pollution. It can easily solve the environmental pollution problem caused by chemical cleaning. Often, a single exhaust fan can solve the problem of waste generated during cleaning.

2. Effect advantages

The traditional cleaning method often involves contact cleaning, which has mechanical forces on the surface of the cleaned object, damaging the surface of the object or the cleaning medium adhering to the surface of the cleaned object, which cannot be removed and produces secondary pollution. The non grinding, non-contact, and non thermal effects of laser cleaning should not damage the substrate, making these problems easily solved.

3. Control advantage

Laser can be transmitted through optical fibers, combined with robotic hands and robots, to facilitate long-distance operation. It can clean areas that are not easily accessible by traditional methods, which can ensure the safety of personnel in some dangerous places.

4. Convenience advantage

Laser cleaning can remove various types of pollutants from the surface of various materials, achieving cleanliness levels that conventional cleaning cannot achieve. And it can also selectively clean the pollutants on the material surface without damaging it.

5. Cost advantage

Laser cleaning is fast, efficient, and time-saving; Although the initial one-time investment for purchasing a laser cleaning system is relatively high, the cleaning system can be used stably for a long time with low operating costs. More importantly, it can easily achieve automated operations.