Skip to content
#CUT QUALITY ISSUE

Poor Piercing

Piercing instability or failure to penetrate the material effectively.

Poor Piercing
Poor Piercing
Good Piercing
Good Piercing

Common Symptoms

  • Piercing takes too long or fails to break through the material
  • Excessive spatter during piercing contaminates nozzle and lens
  • Irregular or oversized entry hole compared to kerf width
  • Machine alarm during the piercing process

Root Causes

Incorrect Parameters

Low power, high speed or improper focus setting prevents full penetration through the material thickness.

Gas Pressure Issues

Gas pressure too low or unstable during piercing fails to eject molten material effectively from the kerf.

Nozzle Problems

Worn or incorrect nozzle size causes poor gas flow dynamics and reduced piercing efficiency.

Lens Contamination

Contaminated protective lens reduces beam quality and power delivery at the cutting surface.

Beam Misalignment

Beam not centered through the nozzle axis causes asymmetric energy distribution and poor pierce quality.

Recommended Solutions

ParameterPoor Piercing (Typical)Recommended RangeImprovement
Laser PowerToo LowIncrease 10-20%Stronger piercing ability
Piercing TimeToo ShortIncrease 20-50%More stable penetration
Focus PositionIncorrect (Too High)-1 ~ +1 mmOptimal focus point
Gas PressureToo Low / Unstable0.8-1.2 barStable gas flow
Nozzle DiameterToo Large / WornUse correct sizeBetter gas velocity
Assist GasAir / Nitrogen / O₂Oxygen (Recommended)Better oxidation & removal

Prevention & Maintenance

  • Always check nozzle condition and lens cleanliness before each shift
  • Log gas pressure readings every 4 hours during production runs
  • Replace protective lenses every 200 hours of cutting time
  • Schedule weekly focus and beam alignment checks
💡
Engineering Tip: For thick plate piercing, use a lower cutting speed with optimized oxygen pressure and slightly negative focus position. Ensure lens and nozzle are clean and in good condition. Regular inspection of nozzle condition and lens cleanliness before each shift can prevent up to 70% of piercing-related issues.

Related MUXI Components

Still Having Piercing Problems?

Our team of laser cutting specialists is ready to help you optimize your cutting process. Send us your material specs and we'll provide a tailored solution.

Contact Engineering Team
Laser cutting

© 2024 MUXI PRECISION. All rights reserved. Precision Laser Cutting Components.