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Laser Cutting Machines
Laser cutting plate common problems and solutions
2023-07-24 10:52:03 technical college

Laser cutting is widely used in automobile manufacturing and material processing because of its good precision, wide cutting range, high efficiency, strong processing capacity and good flexibility.

In the laser cutting production process will also encounter some problems, seemingly simple but very deadly, today for you to prepare a few common problems and solutions, hope to help you.

There are burrs on the edge of the workpiece
Laser cutting carbon steel, workpiece edges sometimes appear burrs, making the surface appear not smooth, and some are difficult to remove, mainly caused by the following points:

1, the upper and lower positions of the laser focus are incorrect, the focus position test needs to be done, and the focus is adjusted according to the offset;

2, nozzle selection is not appropriate, replace the nozzle;

3, the purity and pressure of the cutting gas is not enough, the need to provide high-quality cutting gas and increase the air pressure;

4. If the quadrilateral is cut, burrs appear on the two adjacent sides, indicating that the center of the light path is offset, and the center point of the light path coming out of the nozzle should be re-shown; If there are burrs on the two parallel sides, it indicates that there is a problem with the verticality of the laser head installed on the machine tool, and the verticality of the laser head can be taught according to the direction of the burr on the parallel side. Please check whether the roundness of the nozzle mouth has changed, and it must be ensured that the roundness of the nozzle mouth is a full circle.


The laser cut sheet is impenetrable
There are many reasons why the template cannot be cut through, and the most common ones are as follows:

1. The power of the laser decreases or the aging of the lamp makes the energy of the laser beam insufficient, resulting in impenetrable template cutting. Need to adjust the laser power to replace the laser generator lamp tube;

2, cutting speed is too fast, according to the thickness of the cutting plate to choose the appropriate cutting speed;

3. Check whether the output pressure of the proportional valve is consistent with the cutting pressure set by the upper computer, and whether the oxygen meter is at the indication of 10 kg;

4, check whether there is damage to the protective lens, replace the protective lens;

5, the focus position is not appropriate, according to the plate thickness type to adjust the focus position;

6, in the protection lens and cutting speed and pressure are no problem under the premise of checking the optical fiber interface is not a problem, if the optical fiber interface is not a problem, please check the laser cutting head of the collimating lens and focusing lens is damaged, if there is damage, please replace in time.

Laser cut sheet surface rough
For carbon steel: the upper surface grain is too rough to indicate that the cutting focus is too far away from the plate, and the focus needs to be adjusted closer; The lower surface is too rough, indicating that the cutting gas pressure is too large, reducing the gas cutting pressure; The overall grain is too rough, indicating that the cutting speed is too slow, improve the cutting speed.

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