Optical fiber laser cutting machine has been common in sheet metal processing. Due to its high efficiency and high cutting quality of finished products, it has become the standard configuration of sheet metal processing station. However, when some customers use the fiber laser cutting machine, the cut workpiece has a lot of burrs. Many people think it is the quality problem of the fiber laser cutting machine, but it is not always the case.
In the process of sheet metal processing, the gas purity and parameter setting of the optical fiber laser cutting machine will affect the processing quality. If the equipment+gas+parameter is adjusted properly, the cut workpiece is free of burrs. How is burr generated?
In fact, burr is the excessive residue particles on the surface of metal materials. When the optical fiber laser cutting machine is processing the workpiece, the energy generated by the laser beam irradiation on the workpiece surface will vaporize and evaporate the workpiece surface to achieve the purpose of cutting. But there is a device that we should pay attention to, which is gas.
The gas is to blow off the slag on the surface of the workpiece after the exposed surface of the workpiece is gasified. If the gas is not used, the slag will form burrs and attach to the cutting surface after cooling. Therefore, the purity of the gas should be high. You can change to a higher quality gas supplier. The purity of the gas is very important. Do not use steel cylinder gas, because after two filling, the purity is not good and the gas is wasted.
Another reason is the quality problem of the equipment itself, and the parameter setting factor. So after the customer purchases the fiber laser cutting machine, he should let the experienced operator debug the equipment. Therefore, it is necessary to adjust the cutting parameters as much as possible. The air pressure flow focal length cutting speed and so on need to be adjusted several times. It is impossible to cut high-quality workpiece by relying on the parameters provided by the machine. If a material has burr, it can be qualitatively defective. The more burr, the lower the quality naturally
Specifically, when the fiber laser cutting machine has burr, it can be checked and solved from the following aspects
1. The focus of the beam deviates from the upper and lower positions.
Solution: Adjust the position of the focus according to its offset position.
2. The output power of the fiber laser cutting machine is not enough.
Solution: Check whether the fiber laser cutting machine works 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.
3. The wire cutting speed of the cutting machine is too slow.
Solution: adjust the wire cutting speed in time.
4. The gas purity of the cutting machine is not enough.
Solution: change the gas.
5. The laser beam of the cutting machine is offset.
Solution: debug the focus and adjust it in time
6. The instability caused by the long operation time of the fiber laser cutting machine.
Solution: Shut down the machine and restart it and let it rest.
Optical fiber laser cutting machine is a precision machine, and often a data error will cause its abnormal operation, so it should be strict in work to reduce errors.