A semiconductor laser is a laser that uses a semiconductor material as a working medium. This laser pointer has the characteristics of small size, light weight, long life, simple structure and ruggedness. With the development of industry, the laser power of semiconductor lasers has climbed to the kilowatt level, and has applications in laser brazing, laser cladding, laser metal welding and other advantages.
Laser brazing has been an advantageous application for high-power semiconductor lasers. Although the energy density of a semiconductor laser is slightly lower than that of a fiber laser, the energy distribution is uniform, and the solder wire is uniformly melted during the brazing process, and it is not easy to cause spatter. The laser brazing market in the automotive industry has been dominated by semiconductor fiber-coupled lasers.
Laser cladding can improve the wear and corrosion resistance of metal parts. Laser cladding has a fast cooling rate (up to 106K / s), which is a rapid solidification process. It is easy to obtain fine phases or new phases that cannot be obtained in equilibrium, such as unstable phases and amorphous phases. At the same time, the coating dilution rate is low (generally less than 5%), and it is a solid metallurgical bond or interfacial diffusion bond with the substrate. By adjusting the green laser pointer process parameters, a good coating with a low dilution rate can be obtained. Controllable dilution. At the same time, laser cladding has less heat input and distortion, especially when high cladding with high power density is used, the deformation can be reduced to within the assembly tolerances of the part.
High-power semiconductor lasers have high welding strength during tailor-welding, smooth and flat welds without high post-processing efficiency, and are widely used in automotive, metallurgical and defense industries. Capillary’s direct semiconductor laser has an electro-optical conversion efficiency of up to 50%. It is expected that after several years, direct semiconductor lasers will be a powerful complement to fiber lasers in the welding field due to their efficient photoelectric conversion efficiency and performance characteristics.