Laser cutting machines often encounter various problems during the application process. We summarize and sort out the actual work experience to effectively improve the efficiency of laser cutting equipment. The following are three common problems and solutions in the laser cutting process.

1. Analysis of deformation of small holes (small diameter and plate thickness) during cutting

This is because the machine tool (only for high-power laser cutting machines) does not use blasting perforation when processing small holes, but uses pulse perforation (soft puncture), which makes the laser energy too concentrated in a very small area, and the non-processing area is also burned, causing the hole to deform and affecting the processing quality. At this time, we should change the pulse perforation method to the blasting perforation method in the processing program to solve it. However, for lower-power laser cutting equipment, it is just the opposite. When processing small holes, pulse perforation should be used to obtain better surface finish.

2. Solutions to burrs on workpieces when cutting low-carbon steel

Based on the work and design of CO2 laser cutting, the following reasons are analyzed as the main causes of burrs on the workpiece: the upper and lower positions of the laser focus are incorrect, and the focus position test needs to be done and adjusted according to the focus offset; the output power of the laser is not enough, and it is necessary to check whether the laser generator is working normally. If it is normal, observe whether the output value of the laser control button is correct and adjust it; the cutting line speed is too slow, and the line speed needs to be increased during operation and control; the purity of the cutting gas is not enough, and high-quality cutting working gas needs to be provided; the laser focus is offset, and the focus position test needs to be done and adjusted according to the focus offset; the instability caused by the long running time of the machine tool requires shutdown and restart.

3. Analysis of burrs on workpieces when laser cutting machines process stainless steel and aluminum-zinc plates

When the above situation occurs, first consider the factors that cause burrs when cutting low-carbon steel, but do not simply increase the cutting speed, because increasing the speed sometimes results in the plate not being cut through, which is more prominent when processing aluminum-zinc plates. At this time, other factors of the machine tool should be considered and solved, such as the need to replace the nozzle and the unstable movement of the guide rail.

During the use of the laser cutting machine, we must pay attention to the prevention of common problems and sort out relevant solutions to improve the processing efficiency.