What are the working principles and different parameters?

       Nowadays, stainless steel cutting is more and more common, and its application is more and more extensive. What are the working principles and different parameters of laser cutting? Today, the editor of Ander Laser will have a detailed chat with you today. 1. Principle The laser cutting generator works to generate laser light. After the laser is focused by the lens, the surface of the workpiece is irradiated 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 content. Each has different types of effects on cutting quality and cutting efficiency, but each parameter needs to be combined to achieve a better configuration. Different factories will depend on their own In terms of quality and efficiency, the company’s cost structure has a certain degree of emphasis and trade-offs. 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 linear. 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 overburning. Above this range, the laser beam energy will not be able to completely melt the material of the part and cause the cutting to be impenetrable.

4. Laser output power 

   The laser output power is the energy output of the laser when the laser system is working. It represents the ability of the laser beam to melt the material per unit time. The power is too high. 

5. Focus position 

   The laser output from the laser system is focused by a special lens to a point 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 set at different positions according to different material thicknesses. The correct focus position is an important condition for obtaining 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. The pressure of the auxiliary gas 

   The auxiliary gas should use compressed air or inert gas, which is used 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 lose 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. 

   I learned about the working principle of laser cutting and the knowledge points of different parameters today. If you want to know more, please continue to pay attention to us. Ander Laser Intelligent Equipment (Guangdong) Co., Ltd. is a company that integrates 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; sincerely look forward to your cooperation and understanding.

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