When the fiber laser cutting machine is in operation, people often wonder why the cutting section is smooth at the beginning of cutting, but the section effect is getting worse and worse as time goes by. What is the reason for this?
Prolonged cutting tends to cause the cutting nozzle to overheat, triggering abnormal capacitance values and nozzle deformation, resulting in unstable cutting results.
Reasons for fiber laser cutting machine nozzle heating:
1.the focus is not aligned, the laser is deflected on the nozzle, and the temperature rises.
2.The heat accumulated after the lens is contaminated is transferred to the nozzle.
3.Nozzle quality problem: the concentricity is not qualified.
4.Impact and deformation of the nozzle causes light blockage.
5.Cutting highly reflective materials to reflect light.
How to solve the problem of hot nozzle in fiber laser cutting machine?
●Hardware check.
1.Check that the cutting head side blowing air is turned on.
2.Check if the cutting head is centered before cutting.
3.Any abnormality in the lower protective mirror.
4.The nozzle may be discolored or distorted due to errors.
If the lens or nozzle is abnormal, it needs to be replaced promptly.
●laser cutting machine process parameters adjustment.
After the hardware check is qualified, the cutting process parameters need to be fine-tuned.
If the above damage occurs during the cutting process or affects the cutting, the nozzle should be replaced in time.