Discussion on the parameter setting of laser cutting
1. Cutting speed. The laser cutting laser head can move along the shape of the part in unit time. The higher the laser cutting speed, the shorter the cutting time, the higher the laser cutting efficiency. But other parameters in a certain case, the laser cutting speed and cutting quality is not linear relationship. The reasonable cutting speed is a range, below which the energy of the laser beam is maintained too much on the surface of the part to cause excessive combustion. Beyond this range, the energy of the laser beam can not melt the material of the part completely, resulting in an impenetrable incision.
2. Laser output power. The output power of laser is the output energy of laser system. Laser cutting represents the ability of a laser beam to melt material per unit time.
3. Focus position. The laser output is finally focused through a special lens at the point of highest power density. The focal diameter is proportional to the focal depth of the focusing lens. Laser cutting point is to set different positions according to different thickness and the correct position of the focus. It is an important condition to obtain stable cutting quality and cutting quality. It is also one of the characteristics of laser cutting and laser beam focusing system, after laser cutting and focusing, the size of laser beam has a great influence on the quality of laser cutting.
4. Auxiliary gas pressure. Make an incision in the crevice. Appropriate air pressure helps to speed up the laser cutting speed, the size of auxiliary gas pressure on the cutting efficiency of fiber Laser cutting machine also has an impact. If the laser cutting material thickness increases or cutting speed slow, should be appropriate to reduce gas pressure. Use Low pressure cutting to prevent frosting.
5. Nozzle distance. The focusing laser is applied to the surface of the component through a copper nozzle. The distance between the workpiece and the Laser Nozzle is called the nozzle distance. The distance from the nozzle to the component is measured in terms of flow and pressure. If the distance is too far, the loss of blowing force is too large, and the flow of exhaust gas is too large, which affects the splash. The suitable distance is 0.8-1.0 mm. Different types of nozzles are selected according to the thickness of the material.
