Laser cleaning technology is an efficient and environmentally friendly cleaning method. It uses laser beams to interact with graffiti pigments, causing the pigments to quickly heat up and vaporize, thereby achieving the effect of removing graffiti from the graffiti surface. This method does not cause damage to the underlying surface and does not require the use of chemical solvents, making it environmentally friendly.
According to the search results, the application of laser cleaning technology in removing street graffiti has been widely recognized and studied. For example, experimental data on graffiti removal by TEA CO2 laser under different circumstances show that when the laser energy density is 4~6 J/cm², the removal efficiency is the highest, and the graffiti area removed per unit energy exceeds 2.5 cm²/J. This shows that laser cleaning technology has a significant effect in removing graffiti.
In addition, the advantages of laser cleaning machines are their high efficiency, time and cost saving, environmental protection, surface protection and versatility. They can be used on a variety of surfaces, including concrete, brick, metal, and even delicate materials like glass or marble, without causing damage to the underlying surface.
In actual operation, the laser cleaning machine accurately locates the graffiti area through scanning and aiming technology, and then the emitted laser beam is absorbed by the pigments or substances in the graffiti, causing them to rapidly heat up and vaporize, and finally the gas is effectively removed through a suction system or other means , leaving the surface clean and free of graffiti.
Laser cleaning technology is not only suitable for removing street graffiti, but can also be used in many fields such as cultural relic protection and industrial cleaning. For example, it can be used to remove rust layers, paint layers and oil stains on metal surfaces, as well as clean electronic components, cultural relics, etc.
Overall, laser cleaning technology provides an efficient, environmentally friendly and surface-friendly solution for urban graffiti removal, helping to restore and protect the beauty and cleanliness of urban spaces.
