Lens Cleaning Procedures
Proper lens cleaning is essential for maintaining laser cutting precision. Always shut down the equipment and wait for the laser to cool completely before cleaning. Use a professional lens cleaning kit with high-purity alcohol and dust-free cloth, wiping from the center outward in a spiral motion. Check the lens coating for scratches — any damage requires immediate replacement. Never touch lenses directly with fingers as skin oils can permanently damage optical coatings.
Mirror Inspection and Maintenance
Mirrors play a crucial role in directing the laser beam and should be inspected regularly for signs of damage or contamination. Visible scratches, chips, or cracks on mirror surfaces require immediate replacement as these defects cause laser scattering and uneven cutting. Mirrors should typically be replaced every 2,000 to 3,000 operating hours depending on usage intensity. Frequent cleaning requirements may indicate worn or damaged mirrors needing replacement.
Optical Path Alignment
Proper optical path alignment ensures the laser beam reaches the cutting point with maximum precision. Use a red light positioner to verify beam trajectory through all mirrors and the focusing lens. Signs of misalignment include inconsistent cutting quality, reduced cutting power despite correct settings, and frequent misfires or incomplete cuts. After moving the machine or following heavy usage, always perform an alignment check to maintain optimal performance.
Nozzle Inspection and Replacement
Check nozzles regularly for condition and blockages. Minor blockages can be cleared using a 0.3mm cleaning needle. Worn or deformed nozzle inner walls require immediate replacement — keep commonly used nozzle specifications in stock. Unstable gas flow may indicate aging sealing rings that need replacement. Proper nozzle maintenance ensures uniform gas jet distribution for clean, burr-free cuts.
