The laser marking machine has a wide range of applications, has a lot of development in many industries, and is gradually expanding the application area, which is affirmed by more enterprises and individuals. When you buy a laser marking machine, in addition to understanding the principle of the laser and the basic structure of the laser marking machine, knowing the working principle of the laser marking machine can also help us better use laser equipment during the operation process. Better grasp and control, the working principle of laser marking machine is currently recognized as two types:

Thermal processing technology: a high-energy-density and concentrated laser beam is irradiated on the surface of the material being processed (metal, plastic, marking, etc.). The surface of the material absorbs the laser energy, which generates a thermal excitation process in the illuminated area. The temperature of the surface of the material (or coating) rises, causing metamorphosis, melting, ablation, evaporation and other phenomena, and then forming a preset marking effect, because it uses high temperature to achieve the desired effect, it is thermally processed; for example: optical fiber and semiconductor CO2 laser marking machine.

Cold processing technology: Photons (ultraviolet rays) with high load energy can modify the material or the surrounding medium to cause non-thermal process destruction of the material. Because it uses low temperature, the thermal ablation temperature of the bottom of the box is lower, so there is no side effect of "heat damage" to achieve cold peeling, so there is no heating or thermal deformation on the inner layer and nearby areas of the processed surface. Such as: green light and UV laser marking machine.