Why Does the Power of Fiber Laser Cutting Machine Decrease? (5 Reasons)

Fiber laser cutting machine has some more or less losses in the process of long-term use, such as slow cutting speed, poor cutting accuracy and other problems.

Many people think that the laser power has decreased.

There are many reasons that affect the power reduction of the laser cutting machine, not necessarily the problem of the laser generator.

The reasons for the power reduction of the optical fiber laser cutting machine are analyzed:

Why Does the Power of Fiber Laser Cutting Machine Decrease? (5 Reasons) 1

1. Focus position

Focus position affects the cutting accuracy, especially the focus spot diameter.

The focal spot diameter should be as small as possible to produce a narrow slit;

The focal spot diameter is proportional to the focal depth of the focusing lens.

The smaller the focal depth of the focusing lens is, the smaller the focal spot diameter is.

Related reading: How to Choose Laser Cutting Focus?

2. The distance of the nozzle

The distance between the workpiece and the nozzle also affects the power reduction of the optical fiber laser cutting machine.

Too far away will cause unnecessary waste of kinetic energy, and too close away will affect the dispersion ability of sputtered cutting products.

The appropriate distance is 0.8mm.

In addition, the optical fiber laser cutting machine mainly relies on its follow-up adjustment to cut the workpieces with uneven surfaces, and the height of the nozzle and the workpieces should always be consistent during operation.

3. Cutting speed

The cutting speed has a great influence on the power of the fiber laser cutting machine, and the cutting speed is proportional to the power of the fiber laser cutting machine.

At the same time, the cutting quality is related to the laser beam quality, and also to the characteristics of the laser beam focusing system, that is, the size of the laser beam after focusing has a great impact on the laser cutting quality.

Related reading: Laser Cutting Thickness & Speed Chart

4. Auxiliary gas

The size of the auxiliary gas and gas pressure also affects the power of the optical fiber laser cutting machine.

It is better to use compressed air or inert gas as the auxiliary gas.

If the thickness of the processed material increases or the cutting speed is slow, the gas pressure should be appropriately reduced.

Cutting with lower gas pressure can prevent the edge from frosting.

Related reading: The Application of Air as Auxiliary Gas in Laser Cutting

5. Laser power

If the first four items have been eliminated, the laser power will be reduced.

After any equipment is used for a long time, some parts will age.

Laser is the core and most important part of fiber laser cutting machine, and its power will drop after a long time of use.

In addition to the above points, the performance, size and thickness of processing materials will also affect the power reduction of fiber laser cutting machine.

Related reading: How to Select the Power of Fiber Laser Cutting Machine?

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