Precautions For Cutting Thick Metal Plate With Fiber Laser Cutting Machine

Fiber laser cutting machine in thick metal plate processing has significant advantages, but the operation of the following points need special attention to ensure processing quality and equipment safety:

1. equipment status check Before starting the machine, you need to confirm that the cooling system, the supply of auxiliary gases (such as oxygen/nitrogen) is normal, and whether the laser head lens is clean. Thick plate cutting energy consumption is high, equipment long-term high load operation, you need to strengthen the cooling system monitoring, to avoid high temperature caused by beam quality degradation.

2. parameter matching and dynamic focusing Thick plate cutting requires precise setting of power, speed, auxiliary gas pressure and other parameters. For example, when cutting 30mm carbon steel, the power should be adjusted to more than 12kW, and the oxygen pressure should be controlled at 0.8-1.2MPa. At the same time, the dynamic focusing function is activated to adjust the focus position in real time, so as to ensure that the laser energy is concentrated on the surface of the material, and to avoid tilting of the cross-section or slag hanging due to heat accumulation.

3. Material Fixing and Cutting Path Planning Thick metal plate has a large self-weight and needs to be fixed with a special fixture to prevent displacement during the cutting process. Path planning should prioritize cutting the inner contour and then the outer contour to reduce material deformation. For complex shapes, micro-connection design should be added to avoid small parts falling off due to stress release.

4. Safety Protection and Environmental Control Operators must wear laser protective goggles, fireproof clothing, and light grids and emergency stop buttons need to be installed around the equipment. High risk of slag splash when cutting thick plates, high temperature resistant matting should be laid under the working table. Workshop temperature should be controlled at 15-35℃, humidity is less than 70%, to avoid condensation of optical components or circuit failure.

5. Regular maintenance and calibration Clean the laser head lens every week, check the collimation of the optical path every month, and calibrate the verticality of the cutting head every quarter. Thick plate cutting requires high precision of the equipment, and the focus position needs to be re-calibrated after long-term use to ensure that the width of the cutting seam is stabilized within 0.2mm.

Through the above standardized operation, the fiber laser cutting machine can be given greater play in the thick metal plate processing efficiency advantages, while extending the life of the equipment, reduce production costs.