About the working principle and working parameters of laser cutting

      Compared with traditional tool cutting, modern laser cutting technology  it has been widely used in the processing of metal and non-metal materials, and has become the "sword" of "cutting iron like mud" in the field of mechanical processing. Today, the laser cutting manufacturer Ande Laser will talk to you about the working principle of laser cutting and related working parameters.

    The working principle of laser cutting and related working parameters

1. Principle laser generator  the work produces laser. The laser is focused by the lens and irradiates the surface of the workpiece to quickly melt the irradiated material. At the same time, the molten material is blown away by the high-speed airflow coaxial with the beam to form an incision, thereby cutting the workpiece.

2. Laser cutting parameters Laser cutting parameters include cutting speed, power, cutting gas and other contents. Each has different types of effects on cutting quality and cutting efficiency, but each parameter needs to be combined to achieve a better configuration. Of factories will make a certain degree of preference and trade-offs in terms of quality and efficiency according to their own cost structure.

3. Cutting speed In unit time, the laser head can move along the part shape. The higher the cutting speed, the shorter the cutting time and the higher the production efficiency. However, when other parameters are fixed, the cutting speed and cutting quality are not linearly related. A reasonable cutting speed is a range value. Below this range, too much energy of the laser beam will stay on the surface of the part to cause overburn. Above this range, the energy of the laser beam will not be able to completely melt the material of the part and result in impenetrable cutting.

4. Laser output power The laser output power is the amount of energy output by the laser when the laser system is working. It represents the ability of the laser beam to melt materials per unit time. The power is too high.

5. Focus position The laser output from the laser system is focused to a point through a special lens, where the power density is higher. The focal spot diameter is proportional to the focal depth of the focusing lens. The smaller the focal depth of the focusing lens, the smaller the diameter of the focal spot and the more concentrated the energy at the focal point. The focus is different positions set according to different material thicknesses. The correct focus position is an important condition to obtain stable cutting quality. At the same time, the cutting quality is related to the laser beam, and also related to the characteristics of the laser beam focusing system, that is, the focus of the laser beam. The size has a great influence on the quality of laser cutting.

6. Air pressure of auxiliary gas It is recommended to use compressed air or inert gas as auxiliary gas. The function is to cool the laser head, protect the focusing lens, prevent pollution, blow off the slag in the cutting seam, and form an incision. Appropriate air pressure can help speed up the cutting speed, and the auxiliary gas pressure is right Fiber laser cutting machine  the cutting efficiency also has an impact. If the thickness of the processed material is increased or the cutting speed is slow, the gas pressure should be appropriately lowered. Cutting with a lower gas pressure can prevent the cutting edge from frosting (oxidation).

7. Nozzle distance The focused laser is applied to the surface of the part through a copper nozzle. The distance between the processed part and the nozzle of the laser head is called the nozzle distance. The distance from the nozzle to the part is measured from the perspective of flow and pressure. If the gas is too far away, the blowing force will be lost too much and the flow will be wasted. If it is too close, it will affect the splashing. The suitable distance is 0.8~1.0 mm. Choose different types of nozzles according to different material thickness.

    Regarding the working principle of laser cutting and related working parameters, I learned about it today. If you want to know more, please continue to pay attention to us. Ander Laser Intelligent Equipment (Guangdong) Co., Ltd. is a company integrating R&D, production and sales. Laser equipment manufacturer, main products  : laser cutting machines.Laser marking machine, laser welding machine and laser equipment peripheral automation and other series, involving more than 100 kinds of industrial laser equipment and its supporting products, comprehensive control of product quality, many series of products have obtained the EU CE certification, looking forward to your Cooperation to understand.

    Part of the content of this article has been compiled from the network and shared. If there is any infringement, please contact the editor to delete it.