How to solve the burr in cutting carbon steel plate with laser cutting machine
XT Laser – Laser Cutting Machine for Cutting Carbon Steel
If there are burrs, it may be that the lens is dirty. At the beginning, the lens was clean, so there was no problem cutting it, but the rear lens was dirty, so there were burrs. But the most fundamental reason is that the air used as auxiliary air is dirty, caused by oil and water. In this case, it is necessary to add water and oil removal equipment at the rear end of the air compressor to ensure the normal operation of the cutting operation. Remove water, add a cold dryer, remove oil, and add a back-end degreasing device. The compressed air thus processed not only ensures the normal operation of the cutting operation, but also protects the laser cutting equipment, extending the service life of the lens and the maintenance cycle of the laser cutting equipment. At the same time, it also avoids the problem of lens oil and water pollution, which can cause greater damage to laser equipment.
When cutting with a laser cutting machine, as long as the correct method is followed, generally no problems will occur and the cutting effect is also very good. However, if there are some burrs when cutting with a laser cutting machine, it is necessary to pay attention. It is best to find out the specific reason and solve it in a timely manner.
Laser cutting machines have become common in sheet metal processing. Due to its high efficiency and high cutting quality of finished products, it has become a standard configuration for sheet metal processing stations. However, some customers use laser cutting machines to cut workpiece with many burrs. Many people believe that it is the quality problem of laser cutting machine products, but this is not always the case.
During sheet metal processing, the gas purity and parameter settings of the laser cutting machine can affect the processing quality. If the equipment+gas+parameter is adjusted to the optimal value, the workpiece to be cut will not have burrs.
How did the burr come from.
In fact, burrs are surplus residual particles on the surface of metal materials. When a laser cutting machine is processing a workpiece, the energy generated by the laser beam irradiating the workpiece surface evaporates, causing the workpiece surface to evaporate, achieving the purpose of cutting. But there is a device that we must pay attention to, which is gas.
The gas is vaporized on the irradiated surface and blows away the molten slag on the surface of the workpiece. If gas is not used, slag can form burrs that cool and adhere to the cutting surface. Therefore, the purity of the gas must be high, and you can switch to a higher quality gas supplier. The purity of the gas is very important. Do not use steel cylinder gas, because after filling twice, the purity is not good, and the gas is wasted.
Another reason is the quality of the equipment itself, as well as factors related to parameter settings. Therefore, when purchasing a laser cutting machine, customers need experienced operators to debug the equipment. Therefore, it is necessary to adjust the cutting parameters as much as possible. Air pressure, flow rate, focal length, and cutting speed all require multiple adjustments. The parameters provided by the machine cannot cut high-quality workpiece.
If a material has burrs, it may have quality defects. The more burrs, the lower the quality. Specifically, when burrs appear on laser cutting machines, they can be inspected and resolved from the following aspects. 1. The upper and lower positions of the beam focus shift.
Solution: Adjust the focus position and adjust it according to the generated offset position.
The output power of the laser cutting machine is insufficient.
Solution: Check whether the laser cutting machine works properly. If there are abnormalities, they need to be repaired and maintained in a timely manner. If normal, check whether the output value is correct.
The wire cutting speed of the cutting machine is too slow.
Solution: Timely adjust the wire cutting speed.
4. The gas purity of the cutting machine is insufficient.
The addition point of the laser beam of the cutting machine is offset.
Solution: Debug the focus and adjust it in a timely manner.
6. The laser cutting machine works for a long time and is unstable.
Solution: Shut down the machine and restart it, allowing the machine to rest.
Water removal is relatively simple and relatively inexpensive, but oil removal is relatively complex. Catalytic oxidation for oil removal can be understood as providing a low cost level 0 oil free solution.
It is recommended to check the focus or cutting speed of the laser beam. If the cutting line speed of the laser cutting machine is too slow, the surface quality of the cutting surface will be damaged and burrs will be generated. Or use a higher purity auxiliary gas instead. At the same time, the working time of the laser cutting machine is too long, resulting in unstable working conditions of the equipment, which can also produce burrs.
First, check whether there is a problem with the laser output and whether the laser spot is very circular (circular means that the lateral distribution of laser energy is uniform, and the energy distribution of the light spot formed after passing through the lens is also relatively uniform. Cutting quality is better.
2. Check whether the lens is dirty during laser transmission, or whether the lens is dirty, and whether there are small cracks in the lens that are not easily visible to the naked eye, which can affect the transmission of laser power.
After checking the above two points, you can determine whether the laser itself is in good condition. After that, there is the adjustment of process parameters. The burrs produced by laser cutting of stainless steel have a certain hardness and are difficult to remove. It is time-consuming and affects the appearance of the workpiece. It is best to solve the problem fundamentally. The purity of the gas should be high. You can switch to a better quality gas supplier. The purity of the gas is very important. It is best not to use steel cylinder gas because after filling twice, the purity is not good and the gas is wasted. Then adjust the cutting parameters to the best, such as air pressure, flow rate, focal length, cutting speed, etc., which require multiple adjustments. The parameters provided by the machine cannot cut delicate workpieces. Equipment+gas+parameters, adjusted to the best, cutting workpiece without burrs.
Optical fiber laser cutting machines are precision machines, and often a data error can lead to abnormal operation. Therefore, strict requirements must be made in work to reduce errors.
The above are some factors that may cause burrs in laser cutting machines and specific treatment measures. I hope everyone can solve this problem when facing it.