With its excellent performance, laser equipment is more and more used in all walks of life. Laser equipment can be roughly divided into: laser cutting machine, laser engraving machine, laser marking machine, laser slicer, laser medical equipment, and other laser equipment. At present, there are two kinds of laser cutting machines used for material cutting in the market: fiber laser cutting machine,.
To know how to choose a laser cutting machine, you first need to know the difference between fiber laser and CO2 laser
1. Different light-emitting media
Fiber laser generates laser by diode pumping, and uses flexible fiber cable to transmit the laser beam, while CO2 laser generates laser by exciting nitrogen and carbon dioxide gas in the cavity, and then transmits the beam through the reflector.
2. Different structures
At the same power, the structure of fiber laser is more compact than that of CO2 laser
3. Different electro-optic conversion efficiency
Generally, the conversion efficiency of CO2 laser is about 10%, and that of fiber laser is about 30%
4. Different laser wavelengths
The wavelength of fiber laser is 1.06 μ m. The wavelength of CO2 laser is 9.3 μ m~10.6 μ m. Therefore, the focusing spot of fiber laser is smaller than that of CO2 laser, with faster cutting speed and higher processing efficiency
So, since fiber lasers have so many advantages, isn't it obvious how to choose between them? The existence is reasonable, and CO2 laser also has its advantages.
Different cutting materials have different light absorption rates for different wavelengths. The absorption rate of non-metallic materials such as wood, cloth, plastic, acrylic, etc. for fiber laser is very low, while the absorption rate of CO2 laser for metal materials or non-metallic materials is very high. Therefore, fiber laser is only suitable for cutting metal materials, and CO2 laser can be used for cutting both metal materials and non-metallic materials. Moreover, CO2 laser cutting surface has good smoothness and high perpendicularity, which is more suitable for material cutting with high precision requirements.
Therefore, in the metal plate processing industry, people will generally choose fiber laser cutting machine, while in the non-metallic material processing industry, especially in precision processing and advanced handicraft processing, people will still choose to use CO2 laser cutting machine.