Laser cleaning principle

The principle of laser cleaning is to irradiate the surface of the workpiece to be cleaned with a laser beam with high energy density.

The process of laser cleaning depends on the characteristics of the light pulse generated by the laser, and is based on the photophysical reaction caused by the interaction of high intensity beam, short pulse laser and pollution layer. Laser cleaning can make oil stains, rust spots and other substances on the surface evaporate or fall off instantly, and can quickly and efficiently remove attachments or redundant layers on the workpiece to achieve the purpose of workpiece cleaning.

Laser cleaning is a cutting-edge technology based on the interaction effect between laser beam and other substances. Compared with traditional cleaning methods such as mechanical cleaning, chemical corrosion cleaning, solid-liquid mixed strong impact cleaning and ultrasonic high-frequency cleaning, laser cleaning has obvious advantages such as high efficiency, rapidity and low cost. Moreover, the thermal load and mechanical force on the workpiece are very small, which will not cause damage to the workpiece, and the waste can be recycled in time without polluting the environment. But also can realize long-distance automatic remote cleaning.

Practical application of laser cleaning;

1, laser cleaning can not only clean organic pollutants, but also clean inorganic substances, including metal corrosion, metal particles, dust and so on. Laser cleaning technology is widely used in weapon maintenance.

2. Using the laser cleaning system, rust and pollutants can be removed efficiently and quickly, and the cleaning parts can be selected to realize the automation of cleaning. Using laser cleaning, not only the cleanliness is higher than that of chemical cleaning process, but also there is almost no damage to the surface of the object.

3. By setting different parameters, a dense oxide protective film or metal melting layer can be formed on the surface of metal objects, thus improving the surface strength and corrosion resistance. The electronics industry needs high-precision decontamination, which is especially suitable for laser deoxidation. Before soldering the circuit board, the pins of components must be thoroughly oxidized to ensure the best electrical contact, and the pins should not be damaged during decontamination. Laser cleaning can meet the use requirements, and the efficiency is very high. A needle only needs to be irradiated with laser once.