Science | Why the power of the fiber laser cutting machine drops?

In the process of long-term use of metal laser cutting machine, it is inevitable that the cutting speed will slow down, the cutting precision will be worse, and the power will drop. People’s first reaction to the power drop is often the problem of the laser, which is not correct. There are many reasons that affect the power drop of the metal laser cutting machine, not necessarily the problem of the laser. Here is an analysis of the reasons for the power drop of the fiber laser cutting machine.

Metal laser cutting machine for sheet metal

Factors:

Focal point

The focus position will affect the precision of laser cutting, especially the diameter of the focus spot. The focal spot diameter should be as small as possible to create a narrow slit; the focal spot diameter is proportional to the focal depth of the focal lens. The smaller the focal depth of the focal lens, the smaller the focal spot diameter.

The distance between the nozzle and the workpiece

The distance between the nozzle and the workpiece also affects the power reduction of the fiber laser cutting machine. Too far will cause unnecessary waste of kinetic energy, and too close will affect the dispersion ability of splash cutting products. The appropriate distance is 0.8 mm. In addition, the fiber laser cutting machine mainly realizes the cutting of workpieces with uneven surfaces through subsequent adjustments, and the height of the nozzle and the workpiece must always be the same during operation.

Stainless steel laser cutting

Cutting speed

The cutting speed has a great influence on the power of the fiber laser cutting equipment, and the cutting speed 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 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.

Fiber 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 a lower air pressure can prevent frosting on the cutting edge.

Laser power

If the first few items are excluded, consider the laser power drop. After long-term use of any equipment, some parts will deteriorate. Laser is the core and most important part of metal 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 materials will also affect the power reduction of the fiber laser cutting machine，also need to pay attention.

Therefore, when the metal laser cutting machine has a power drop problem, it is necessary to investigate the reasons one by one to solve the problem correctly and effectively. I hope this article can help you, if you like it, please remember to share it.∩_∩