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Laser welding is one of the important aspects of the application of laser processing technology. Laser welding is a process that uses the radiant energy of the laser to achieve effective welding. The working principle of laser welding is: To excite the laser active medium (such as a mixture of CO2 and other gases, YAG yttrium aluminum garnet crystals, etc.) in a specific way, so that it oscillates back and forth in the resonator, thereby forming an excited radiation beam. When the beam comes into contact with the workpiece, its energy is absorbed by the workpiece, and welding can be carried out when the temperature reaches the melting point of the material.

Power density is a key parameter in laser processing.Higher power density can quickly heat the surface layer to its boiling point in a few microseconds, resulting in significant evaporation.Therefore, high power density is conducive to material removal processes, such as cutting, engraving, and drilling.

What is laser welding? The current development of laser welding technology? What fields can laser welding technology be applied to? What is laser welding? Simply put, laser welding is to heat the surface of the workpiece with laser radiation, the surface heat diffuses to the interior through heat conduction, and then by controlling the width, energy, peak power, repetition frequency and other parameters of the laser pulse, the workpiece is melted to form a specific bath, so as to achieve welding.