This is often caused by incorrect parameter settings.

• Speed too high: Try reducing the cutting speed.
• Power too low: Increase the laser power.
• Focus too high: Lower the focus position.
• Gas pressure too low: Increase the gas pressure slightly.

Yellowing is typically caused by oxidation.

• Impure Nitrogen: Ensure your Nitrogen gas is high purity. Even a small amount of Oxygen can cause discoloration.
• Gas Flow: Check for leaks in the air pipe or increase the gas pressure.

A hot nozzle usually means the laser beam is clipping it.

• Centering: Check if the nozzle is perfectly centered with the laser beam.
• Cooling: Ensure sufficient gas pressure is flowing to cool the nozzle.
• Replacement: If the nozzle is deformed, replace it immediately to avoid damaging the focus lens.

Blue plasma indicates a severe parameter mismatch.

• Wrong Gas: Check if you are accidentally using Oxygen (O2) instead of Nitrogen (N2).
• Speed too high: The laser doesn’t have enough time to cut through; reduce speed.
• Power too low: Increase power output.

These defects are usually related to focus or cleanliness.

• Focus: Adjust the focus position and diameter for better penetration.
• Cleanliness: Ensure the material surface is free of oil, rust, or paint.
• Shielding Gas: Make sure the protective gas is on to prevent oxidation.

Black seams mean the metal is oxidizing while hot.

• Check Nitrogen: Ensure the Nitrogen gas is turned on.
• Airflow Direction: Adjust the shielding gas nozzle so the airflow is opposite to the welding direction, covering the hot weld bead effectively.

This can affect welding quality.

• Power Supply: Check if your main voltage is stable. Use a voltage stabilizer if necessary.
• Lens Check: Inspect the protective lens. A dirty or damaged lens can block laser power. Clean or replace it.

Frequent stops are often safety triggers.

• Sensors: Check for any faulty sensors or loose electrical connections.
• Cooling System: Ensure the water chiller is running correctly, filters are clean, and water flow is unobstructed.