Causes and solutions of laser cutting machines prone to burrs

Laser cutting machines are very common in sheet metal processing. Because of its high efficiency and high cutting quality, it has become the standard for sheet metal processing stations. However, some customers have a lot of burrs on the workpiece when they use the laser cutting machine. Many people think it is a quality problem of the laser cutting machine, but this is not entirely the case.

In the sheet metal processing process, the gas purity and parameter settings of the laser cutting machine will affect the processing quality. Adjust the equipment + gas + parameters, and the cut workpiece will be free of burrs.

Actually, burrs are excess residual particles on the surface of metal materials. When the laser cutting machine processes the workpiece, the energy generated by the laser beam irradiating the surface of the workpiece evaporates to achieve the purpose of cutting. But there is one device we should pay attention to, and that is gas.

After the irradiated surface of the workpiece is vaporized, the gas blows away the slag on the surface of the workpiece. If gas is not used, slag will form burrs on the cut surface after cooling. Therefore, the purity of the gas should be high, and a higher quality gas source can be used. The purity of the gas is very important. Do not use gas from a gas cylinder, because the purity of the gas is not good after two fillings, and the gas will be wasted.

Another reason is the quality of the equipment itself, as well as the parameter setting factors, so when customers buy a laser cutting machine, experienced operators must debug the equipment. So try to adjust the cutting parameters better, such as air pressure, flow, focal length and other cutting speeds. , Should be adjusted many times, high-quality workpieces cannot be cut with the parameters provided by the machine.

If a material has burrs, it may have quality defects. The more burrs, the lower the quality.

Generally speaking, when the laser cutting machine has burrs, it can be checked and solved from the following aspects:

1. The output power of the laser cutting machine is not enough.

Solution: Check whether the laser cutting machine is working normally. If it is abnormal, it needs to be repaired and maintained in time. If it is normal, check whether the output value is correct.

2. The up and down position of the beam focus is deviated.

Solution: Adjust the focus position according to the offset position.

3. The gas purity of the cutting machine is not enough.

Solution: Change air.

4. The cutting speed of the cutting machine is too slow.

Solution: Adjust the wire cutting speed in time.

5. The addition point offset of the laser beam of the cutting machine.

Solution: Debug the focus and adjust it in time.

6. The instability caused by the long running time of the laser cutting machine.

Solution: Shut down and restart.

Laser cutting machine is a kind of precision machine, and data errors often cause abnormal operation. Therefore, it should be strictly controlled during work to reduce errors.

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