How to Avoid Metal Laser Cutting Machine Occurs Over Burning?

4月 3, 2025

To avoid over burning during metal レーザー切断, consider the following strategies:

1. Optimize Laser Parameters:

• Power and Speed: Adjust the laser power and cutting speed to balance between effective cutting and minimal heat input. Lower power with higher speed can reduce heat accumulation, but ensure the laser still penetrates the material.
• Focus Position: Correctly set the focal point relative to the material thickness. An improper focus can lead to inefficient cutting and excess heat.

2. Assist Gas Selection and Pressure:

• Use nitrogen as an inert assist gas to prevent oxidation, especially for stainless steel and aluminum. Oxygen may be used for carbon steel but can increase burning.
• Adjust gas pressure to effectively remove molten material without causing turbulence. Higher pressure may improve slag ejection but avoid excessive consumption.

3. Material Considerations:

• Tailor settings to the material type and thickness. Thicker materials may require higher power but ensure speed adjustments to mitigate heat buildup. Consider thermal conductivity (e.g., aluminum vs. steel).

4. Nozzle Maintenance and Standoff Distance:

• Ensure the nozzle is clean, undamaged, and positioned at the correct standoff distance (typically 0.5–1.5 mm). This optimizes gas flow and beam focus.

5. Pulse Frequency Modulation:

• For pulsed lasers, adjust pulse frequency and duration to control heat input. Shorter pulses with adequate cooling time reduce thermal damage.

6. Equipment Maintenance:

• Regularly clean lenses and mirrors to maintain beam quality. Check alignment and replace worn components to ensure consistent performance.

7. Cooling Systems:

• Maintain proper cooling for the laser system to prevent overheating, which can lead to inconsistent power output.

8. Test Cuts and Prototyping:

• Conduct test runs on scrap material to fine-tune parameters before final cutting, minimizing trial errors.

9. Design Adjustments:

• Avoid intricate designs that concentrate heat. Use micro-joints or heat sinks in the design to dissipate heat effectively.

By integrating these strategies, you can minimize overburning, achieving cleaner cuts with reduced thermal damage. Regular monitoring and adaptive parameter adjustments are key to maintaining quality across different materials and thicknesses.