Fiber laser cutting machines are probably not unfamiliar to everyone, as they have made a qualitative leap in efficiency and accuracy compared to traditional cutting equipment. During the process of using a laser cutting machine, as the usage time prolongs, users may find that the cutting speed of the equipment is not as fast as before, and the cutting quality is not as good as before. This is almost a common problem for all devices, but the duration of maintaining performance varies. So, why does the cutting speed slow down and how can we solve it?
Focus area
The focusing area can affect the precision of laser cutting, especially in the diameter of the focusing spot. The diameter of the focal spot should be as small as possible to create a narrow slit; The diameter of the focal spot is directly proportional to the depth of focus of the focal lens. The smaller the depth of focus of the focal lens, the smaller the diameter of the focal spot.
Distance between nozzle and workpiece
The distance between the nozzle and the workpiece also affects the power reduction of the fiber laser cutting machine. Being too far can cause unnecessary waste of kinetic energy, while being too close can affect the dispersion ability of splashing cutting products. The appropriate distance is 0.8 millimeters. In addition, the fiber laser cutting machine mainly achieves cutting of uneven surface workpieces through subsequent adjustments, and the height of the nozzle and the workpiece should always be consistent during operation.
Cutting speed
The cutting speed has a significant impact on the power of fiber laser cutting equipment, and is directly proportional to the power of the fiber laser cutting machine. At the same time, the cutting quality is related to the quality of the laser beam and also to the characteristics of the laser beam focusing system, that is, the size of the laser beam after focusing has a significant impact on the quality of laser cutting.
Auxiliary gas
The size and pressure of the auxiliary gas also affect the power of the fiber laser cutting machine. The auxiliary gas is preferably compressed air or inert gas. If the thickness of the processed material increases or the cutting speed is slow, the air pressure should be appropriately reduced. Cutting with lower air pressure can prevent frosting on the cutting edges.
laser power
If the previous few items are excluded, consider a decrease in laser power. After prolonged use of any device, certain components will age. Laser is the core and most important component of metal laser cutting machines, and its power will decrease after long-term use. In addition to the above points, the performance, size, and thickness of the processed materials can also affect the power reduction of the fiber laser cutting machine.
Since we know the reasons for the slow cutting speed and poor cutting quality of fiber laser cutting machines, it is essential for users to pay attention to the precautions during use and maintenance in order to increase the lifespan of fiber lasers.
