Noise Control Measures for Laser Processing Equipment During Welding

When evaluating laser processing equipment for workshop integration, many buyers focus on speed, precision, or footprint—but overlook noise. While laser welding is quieter than arc or plasma processes, it’s not silent. Understanding and managing its noise sources helps meet occupational safety standards and improve operator comfort.

Main Sources of Noise

Cooling System: The chiller or internal coolant pump is often the loudest component, especially in air-cooled units or compact systems with high-flow pumps.

Exhaust/Fume Extraction: High-velocity airflow through ducts and filters can generate significant whooshing or whistling sounds.

Motion Systems: Servo motors, linear guides, or robotic arms moving at high speed may produce mechanical hum or vibration noise.

Plasma Plume (during keyhole welding): Though brief, the collapse of the vapor cavity can create a faint “snap”—usually below 70 dB, but noticeable in quiet environments.

Practical Noise Reduction Steps

Choose liquid-cooled chillers with acoustic enclosures: They typically run 10–15 dB quieter than open-frame air-cooled models.

Use flexible, lined ducting for fume extraction: This dampens airflow turbulence better than rigid metal pipes.

Mount the system on vibration-isolating pads: Prevents structure-borne noise from transferring to floors or tables.

Install acoustic barriers or partial enclosures: Even a 3-sided polycarbonate shield can reduce perceived noise by 5–8 dB without blocking visibility.

Important Note

Unlike traditional welding, laser processing equipment doesn’t produce loud arc crackling or spatter pops—so overall noise levels usually stay between 65–75 dB(A) at 1 meter, well below OSHA’s 85 dB action level. Still, in open-plan factories or labs, even moderate noise can be distracting over long shifts.

Final Advice

Ask suppliers for actual sound pressure level (SPL) data—not just “quiet operation” claims. Request a live demo in conditions similar to your facility. A truly well-integrated laser processing equipment system should let operators converse normally nearby, without hearing protection. That’s not just compliance—it’s better ergonomics.