How to reduce burrs on fiber laser cutting machine

Burr is one of the common phenomena in fiber laser cutting machine processing. In laser cutting processing, the irregular parts such as sharp corners and burrs that sometimes appear at the transition of the workpiece surface are burrs. Burrs directly affect the dimensional accuracy, shape and position accuracy and surface roughness of the processed workpiece.

The main reason for burrs in sheet metal processing by fiber laser cutting machine:

When the fiber laser cutting machine is processing the workpiece, the high energy generated by the laser beam irradiating the surface of the workpiece quickly vaporizes and evaporates the surface of the workpiece to achieve the purpose of cutting. There are generally two main reasons for burrs: First, the auxiliary gas blows off the slag on the surface of the workpiece after the irradiated surface of the workpiece is vaporized. If the auxiliary gas is not used, the slag will form burrs attached to the cutting surface after cooling. . The second is the equipment itself, parameter setting factors, and daily use skills. Therefore, after customers purchase a new fiber laser cutting machine, they must undergo professional training before starting to use it.

The solution for burrs in fiber laser cutting machine cutting:

1. Use auxiliary gas for cutting.

The purity of the gas should be high, it is best not to use cylinder gas, because after two fillings, the purity is not good, and the gas is wasted. For laser cutting stainless steel, nitrogen is recommended as the auxiliary gas. Nitrogen is a flame-retardant gas. During laser processing, nitrogen not only prevents the explosion of laser cutting, the heated end surface will not be instantly oxidized, and the cut end surface will be smoother and brighter. The auxiliary gas should be adjusted to a pressure of 12-15 kg. The nitrogen under this pressure will not completely prevent the combustion, and can also quickly blow away the waste and achieve the effect of removing burrs.

2. Find a professional operator to adjust the parameters of the metal laser cutting machine, until normal, you can successfully complete the cutting operation of the fiber laser cutting machine.

Some parameter setting factors of laser cutting machine will also affect the appearance of molten slag, which leads to burrs of fiber laser cutting machine, so the cutting parameters should be adjusted to the best. Equipment + gas + parameters, adjusted to the best, the cut workpiece is free of burrs, making the cutting of the fiber laser cutting machine more quality.

2. According to the working principle of the laser cutting machine, the reasons and solutions for the burrs are analyzed.

1. The vertical position of the focus of the beam is deviated.

Solution: Adjust the position of the focus and adjust it according to the offset position it produces.

2. The output power of the machine is not enough.

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

3. The wire cutting speed of the fiber laser cutting machine is too slow.

Solution: Adjust and increase the wire cutting speed in time.

4. The purity of the auxiliary gas of the fiber laser cutting machine is not enough.

Solution: Explain how to improve the purity of auxiliary gas.

5. The addition point of the laser beam of the fiber laser cutting machine has shifted.

Solution: Debug the focus and adjust it in time.

6. The instability of the fiber laser cutting machine operating for too long.

Solution: Turn off the machine and restart it and let the machine rest.