The principle of laser cleaning machine to remove oxide film mainly involves the following processes:‌

1.Laser beam generation: ‌First, the ‌laser cleaning machine generates a high-energy, ‌high-density laser beam. ‌This is usually achieved by using a laser source ‌such as a laser diode or solid-state laser‌. ‌
2.Laser irradiation: The laser beam is focused to a small point and then irradiated onto the surface to be cleaned. The energy density of the laser beam is enough to evaporate or crush dirt, oxide layers, oil and other substances from the surface. ‌
3.Photothermal effect: When the laser beam interacts with the material being cleaned on the surface, it produces a photothermal effect. ‌This causes the temperature of the surface being cleaned to rise,‌ causing the dirt or oxide layer attached to the surface to heat up, evaporate, and vaporize. ‌
4. Photomechanical effect: The high energy of the laser beam can also cause the photomechanical effect, which is the impact effect of the laser beam on the surface of the material. ‌This helps to impact solid particles (‌such as ‌oxides, ‌oil)‌from the surface. ‌

To sum up, the laser cleaning machine irradiates the surface to be cleaned with a high-energy laser beam, and uses the photothermal effect and the photomechanical effect to effectively remove the oxide layer, oil stains and other pollutants on the surface without damaging the surface. Generating chemical waste, ‌ the surface after cleaning becomes smoother, ‌ with higher cleanliness and quality.