As a professional manufacturer of laser cutting machines, we often encounter customer inquiries, why the cutting ability of the same thickness of material is not the same? Although the cutting machine can cut many kinds of materials, the hardness and thickness of different materials are different, so when the cutting materials are different, it is necessary to adjust its configuration to cut out products that meet the requirements.
In the visible light or near region, the reflectance of different metal materials is different. When the laser wavelength is greater than 2um in the infrared range, the metal reflectance is in the following order: silver>steel>aluminum>nickel>carbon steel, that is, the better the conductivity of the material, the higher the reflectivity to infrared. In this infrared band, photons have low energy and can only couple with free electrons in metals.
The absorption ratio of metals to 10.6um wavelength infrared laser varies with temperature. It can be seen that, compared with aluminum and copper, the temperature coefficient of resistance of low-carbon steel is not much different, but because of its much larger resistivity at 20°C, its absorption ratio is not only large in absolute value, but also increases rapidly with temperature. But generally speaking, the absorption ratio of the smooth surface of most solid metal materials to 10.6um wavelength laser is very low, no more than 11%.
The last is the influence of the surface state of the metal laser cutting machine. The roughness of the metal surface, the condition of the oxide film and the special surface coating will have a significant impact on the absorption ratio of the infrared laser of the metal laser cutting machine.
Therefore, different cutting materials require different laser wavelengths. When the production materials are replaced, the manufacturer needs to provide technical support and adjust the laser cutting machine equipment accordingly to meet the production needs. All the equipment sold by our company provides comprehensive after-sales technical support. If you have any questions, you can contact us. On-site service is available. For remote countries or small problems, remote technical support can be provided to ensure the normal production of equipment. Look for MEN-LUCK to buy precision laser cutting machine, the quality is reliable, and after-sales service is assured!
Post time: Mar-30-2023