During the long-term use of the laser cutting machine, there are problems such as slow cutting speed and poor cutting accuracy. Many people think that the laser power of laser cutting equipment has dropped, which is actually not true. There are many reasons that will affect the power drop of laser cutting machines, not necessarily the problem of the laser.

Analysis of several possible reasons:
1. Focus
The focus position will affect the laser cutting precision, especially the spot diameter at the focus point. The diameter of the focusing spot must be as small as possible to create a narrow slit; the diameter of the focusing spot is proportional to the focal depth of the focusing lens, the smaller the focal depth of the focusing lens, the smaller the focal spot diameter.
2.The distance between the nozzle and the workpiece
The distance between the nozzle and the workpiece also affects the power reduction of the laser cutting machine. Too far will cause unnecessary waste of kinetic energy, and too close will affect the dispersion ability of the splash-cut product. The appropriate distance is 0.8mm. In addition, the laser cutting machine mainly realizes the cutting of uneven surface workpieces through subsequent adjustment, and the height of the nozzle and the workpiece should always be consistent during operation.
3.Cutting speed
The cutting speed has a great influence on the power of the laser cutting equipment, and the cutting speed is proportional to the power of the laser cutting machine. At the same time, the cutting quality is related to the quality of the laser beam, and it is also related to the characteristics of the laser beam focusing system, that is, the size of the laser beam after focusing has a great influence on the laser cutting quality.
4. Auxiliary gas
The auxiliary gas size and air pressure also affect the power of the laser cutting machine. The auxiliary gas is preferably compressed air or an inert gas. If the thickness of the processed material increases or the cutting speed is slow, the air pressure should be appropriately reduced, and cutting with a lower air pressure can prevent frosting on the cutting edge.
5. Laser power
If the former items are excluded, the laser power drop is considered. Certain parts of any device will age after prolonged use. The laser is the core and important part of the laser cutting machine, and the power will decrease after long-term use. In addition to the above points, the performance, size and thickness of the processed material will also affect the power reduction of the laser cutting machine.


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