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What are the top ten factors that affect the cutting effect of fiber laser cutting machine?

Views:10     Author:DATO     Publish Time: 2021-07-17      Origin:Site

After using the fiber laser cutting machine for several years, many friends find that the cutting effect of the fiber laser cutting machine is not as good as before. Both the cutting accuracy and the cutting speed have dropped. So, what causes the processing effect of fiber laser cutting machine to decrease? Let's share with you Dato Laser. The decrease in cutting effect of fiber laser cutting machine is the top ten factors.

In fact, there are many parameters that affect the cutting quality of fiber laser cutting machines, such as: cutting height, cutting nozzle model, focus position, cutting power, cutting frequency, cutting duty cycle, cutting air pressure and cutting speed. The hardware conditions include: protective lens, gas purity, processing material quality, focusing lens and collimating lens.

Therefore, when we encounter poor quality of fiber laser cutting machine, we can consider from the following aspects:

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1. The power attenuation of the laser

No matter what brand of laser, there will be an attenuation of about 2% every year. After the fiber laser cutting machine works for a long time, the laser power is inevitable. This may be a problem with the laser itself. On the other hand, when the power drops to affect production, the laser and the external optical path must be maintained. When the maintenance is completed, the cutting ability will be restored.

2. Focus position

The focal position affects the cutting accuracy, especially the focal spot diameter. The focal spot diameter must 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, the smaller the focal spot diameter.

3. The distance of the nozzle

The distance between the workpiece and the nozzle also affects the power drop of the fiber laser cutting machine. Too far away will cause unnecessary waste of kinetic energy, and too close distance will affect the dispersing ability of spattered cutting products. The appropriate distance is 0.8mm. In addition, the fiber laser cutting machine cuts the workpiece with uneven surface mainly by its follow-up adjustment. To achieve this, the height of the nozzle and the workpiece must always be the same during operation.

4. The shape and quality of the laser beam

The beam emitted by the laser is tapered, so the slit cut out is also tapered. In this case, the thickness of 0.4mm stainless steel will be much smaller than the 3mm slit. Therefore, the shape of the laser beam depends on a major factor that affects the cutting accuracy of the metal laser cutting machine.

The size of the spot after the laser beam passes through the focus: the smaller the spot after the laser beam is concentrated, the higher the laser cutting processing accuracy, especially the smaller the slit, the smallest spot can reach 0.01mm.

5. Protect the lens

Check whether the protective lens of the fiber laser cutting machine is clean, and requires no water, oil, and slag spots. Sometimes the protective lens may be fogged due to weather or too cold auxiliary air.

6. Material of processing material

A. The surface roughness of the material. The surface roughness of the material also determines the quality of the cutting. Generally, the smoother the material, the better the quality of the cut.

B. The melting point of the cutting material will affect the cutting effect, and the material absorption rate of the laser is 1.64um.

7. Cutting speed

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

8. The thickness of the workpiece

The greater the thickness of the workpiece, the lower the accuracy and the greater the slit. The thickness of the cutting material of the fiber laser cutting machine is between 0.1-12mm. Laser cutting is most suitable for cutting thin plates. The best thickness is carbon steel under 12mm and stainless steel under 6mm. The processed quality is obviously enhanced, and the efficiency also appears. Guaranteed.

9. Auxiliary gas will affect the processing effect of fiber laser cutting machine

The higher the pressure of the auxiliary gas, the higher the purity of the gas, the less impurities adhered to the material, and the smoother the cut. Generally speaking, the oxygen cutting speed is the fastest, and the nitrogen cutting effect is the best, and the cost is also low. Different gases have different cutting effects.

10. Other factors

A. Accuracy of the workbench

When the fiber laser cutting machine is cutting, the worktable will vibrate with the vibration of the laser head. The high-precision worktable is matched with a stable linear guide, the higher the cutting accuracy will be. The uneven worktable or other reasons also affect the laser cutting machine A major factor in machining accuracy.

B.

In addition to the above factors, improper operation, long-term load production, long-term failure to maintain, etc. will cause the performance of the fiber laser cutting machine to decline, and the cutting effect will be greatly reduced.


Therefore, when we use the fiber laser cutting machine, we must pay attention to the above points. At the same time, we must pay attention to maintenance, so that we can improve the cutting quality of the fiber laser cutting machine and ensure the best performance of the equipment! For more professional questions, please contact Dato Laser directly. Dato7×24 hours online service!


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