I. Parameter Optimization
Phenomenon: Excessive power/slow speed → material over-melting and accumulation; insufficient power/fast speed → incomplete cutting with burrs.
Solutions:Test a "power-speed matching table" for different material thicknesses (e.g., 2000W power with 1.2m/min speed for 8mm carbon steel).
Use the device's built-in "automatic parameter library" (e.g., pre-set modes for carbon steel/stainless steel cutting).
For thin plates (<3mm), try a "high-speed low-power" mode to reduce heat impact; for thick plates (>10mm), use "low-speed high-power" for full penetration.
Phenomenon: High focus → more slag on the upper surface; low focus → severe burrs on the lower surface.
Solutions:Use a "focus test paper" (multi-layer paper stack to measure the burn-through point) to determine the optimal focus height (typically 0.5-1mm below the material surface for carbon steel cutting).Check if the automatic focusing system is malfunctioning (e.g., servo motor jamming, dirty sensors), and manually calibrate the focus position.
II. Auxiliary Gas Issues
Phenomenon: Using low-purity nitrogen (<99.99%) or air → severe metal oxidation and hard-to-remove slag adhesion.
Solutions:For stainless steel/aluminum alloy cutting, use nitrogen with purity ≥99.999%; for carbon steel, oxygen can be used (note the oxidation layer thickness).
Inspect gas pipelines for leaks and filters for blockages; replace gas filters regularly.
Phenomenon: Low pressure → insufficient slag-blowing force; high pressure → scattered molten metal and splashing.
Solutions:Recommended pressure: 8-12 bar for thin materials (<5mm), 15-20 bar for thick materials (>10mm) (refer to the device manual for specifics).
Adjust the nozzle-to-material distance (typically 1-2mm) to ensure vertical airflow against the cutting surface.
III. Equipment Component Maintenance
Phenomenon: Enlarged nozzle aperture or slag adhesion on the inner wall → divergent airflow and loss of directionality.
Solutions:Inspect nozzles daily for wear, and clean them promptly after cutting highly reflective materials (e.g., copper, aluminum).
Replace nozzles with the same model (note the aperture difference between "cutting nozzles" and "welding nozzles").
Phenomenon: Dust, oil, or ablation spots on the lens surface → divergent beam and reduced energy density.
Solutions:Wipe lenses with anhydrous ethanol and a lint-free cloth in a single direction (avoid dry wiping or back-and-forth motions).
Replace protective lenses every 8 working hours (shorten the cycle in high-dust environments) and calibrate focus lenses professionally every quarter.
Phenomenon: Mechanical movement 卡顿 (jamming) → offset cutting paths and rough edges.
Solutions:Apply lithium-based grease to rails weekly and check screw-nut clearance (error should be <0.03mm).
Clean metal debris from rails to prevent wear on precision components.
IV. Material Preprocessing and Properties
Phenomenon: Oil, oxide scale, or coatings on the material surface → additional slag during cutting.
Solutions:Wipe the surface with alcohol/cleaner before cutting, or use a laser cleaning function for preprocessing.
For hot-rolled steel plates, consider shot blasting to remove the oxide layer first.
Phenomenon: Inconsistent cutting results across the same plate (e.g., ablation in thin areas, slag in thick areas).
Solutions:Require material thickness tolerance ≤±0.1mm (≤±0.05mm for precision processing) when purchasing.
For high-stress materials (e.g., quenched steel), perform annealing to relieve internal stress before cutting.
V. Advanced Debugging Techniques
For high-melting-point materials (e.g., titanium alloy), switch from continuous to pulse mode (50-200Hz frequency) to reduce heat accumulation and slag adhesion via intermittent heating.
Avoid direct cutting from the plate edge (prone to starting-point slag); use "lead-in cutting" (start 5-10mm away from the edge and connect to the contour).
For complex shapes, prioritize "spiral cutting" or "layered cutting" to reduce heat buildup at corners.
Preventive Measures
Maintain a Maintenance Log: Record replacement cycles for nozzles and lenses, and gas purity test results for traceability.
Annual Optical Path Calibration: Have the manufacturer's engineers calibrate the entire optical path annually (including mirror angles and focusing accuracy) to ensure beam quality.
Operator Training: Provide specialized training on parameter differences for different materials to avoid arbitrary adjustments based on experience.