The principle of laser cleaning is to use high-frequency and high-energy laser pulses to illuminate the surface of the workpiece, and the coating layer can instantly absorb the focused laser energy, causing oil stains, rust spots or coatings on the surface to be instantly peeled off, effectively removing surface adhesions or surface coatings at high speed. The cleaning method of the coating, while the short-acting laser pulse, under the appropriate parameters, will not harm the metal substrate.

　　Compared with traditional cleaning methods such as mechanical friction cleaning, chemical corrosion cleaning, liquid-solid strong impact cleaning, and high-frequency ultrasonic cleaning, laser cleaning has obvious advantages.

　　1. Laser cleaning is dry cleaning, with no exhaust emissions and no environmental pollution. The cleaning residue is recycled through a vacuum cleaner.

　　2. It can effectively clean submicron particles that are difficult to remove by other methods.

　　3. Lasers can be transmitted through optical fibers and cooperate with robotic hands and robots to easily achieve long-distance operation, and can clean parts that are not easily accessible by traditional methods. This can ensure the safety of personnel in some dangerous places.

　　4. Laser cleaning is efficient, time-saving, and cost-effective.

　　5. With good controllability and high flexibility, it is easy to achieve selective localization and real-time precision cleaning.

　　6. The heat-affected zone is small. For light peeling cleaning, it is the bonding key to open the material. There is no thermal damage to the surrounding materials without thermal action. No damage to the mold - prolong the life of the mold.

　　In simple terms, laser cleaning is particularly suitable for metals, ceramics, rubber for tires, etc., with low cost and good effect without damaging the substrate.

　　Mold laser cleaning

　　The laser cleaning method can be used to connect the optical fiber to guide the light to the dead corner of the mold or the part that is not easy to remove for cleaning, so it is easy to use; because the rubber is not gasified, it will not produce toxic gases, which will affect the safety of the working environment. Compared with conventional cleaning methods, the benefits obtained in saving standby time, avoiding mold damage, working safety and saving raw materials can be quickly recovered, and the economic benefits are obvious.

　　The anti-stick elastic film layer on food industry molds needs to be replaced regularly to ensure hygiene, and laser cleaning without chemical reagents is particularly suitable for this application.

　　Steel laser cleaning

　　Steel cleaning is generally used in China by pickling, which seriously pollutes the environment. Laser cleaning is in a state of research and development in this regard. If successful, it will be a technological revolution.