1. When laser cutting carbon steel, burrs appear on the workpiece
Possible reasons include:
(1) The laser focus position is offset. Perform a focus position test and adjust according to the offset of the laser focus;
(2) The output power of the laser is insufficient. Check whether the laser generator is working properly. If it is normal, observe whether the output value of the laser control button is correct. If not, adjust it;
(3) The cutting line speed is too slow. Increase the line speed during operation and control;
(4) The cutting gas purity is insufficient. High-quality cutting working gas needs to be provided;
(5) The machine tool is unstable due to long operation time. At this time, it needs to be shut down and restarted.
2. Incomplete laser cutting
Reasons for incomplete laser cutting:
(1) The selection of the laser nozzle does not match the thickness of the processing plate. Replace the nozzle or the processing plate;
(2) The laser cutting line speed is too fast. Operator control is required to reduce the line speed.
3. Abnormal sparks appear when cutting low-carbon steel
When cutting low carbon steel normally, the spark beam is long and flat with less forking. Abnormal sparks will affect the smoothness and processing quality of the cut section of the workpiece.
At this time, if other parameters are normal, the following situations should be considered:
(1) The laser head nozzle is seriously worn out and the nozzle should be replaced in time;
(2) If there is no new nozzle to replace, the cutting working gas pressure should be increased;
(3) If the thread at the connection between the nozzle and the laser head is loose, the cutting should be stopped immediately, the connection status of the laser head should be checked, and the thread should be re-threaded.