Laser Cutter Protective Lens Burning: Causes & Solutions

In the laser cutting industry, protective lenses are an essential component of laser cutting machines. However, many users experience frequent damage to these lenses, leading to reduced processing efficiency and increased maintenance costs. In response, the technical team at Huawei Laser has conducted an in-depth analysis of the causes and proposed a series of optimization solutions.

Analysis of Causes

Experts at Huawei Laser point out that the frequent damage to protective lenses in laser cutting machines is mainly caused by the following factors:

Improper Cutting Parameter Settings: Excessive laser power, inaccurate focal positioning, or abnormal gas pressure can result in unstable beams, accelerating lens wear.

Lens Material and Coating Issues: Low-quality protective lenses have poor transmittance, absorbing more laser energy, which increases lens temperature and accelerates damage.

Insufficient Lens Sealing: Dust, slag, and other contaminants from the cutting process can enter the lens chamber, reducing beam transmittance and damaging the lens.

Cooling System Malfunctions: Insufficient heat dissipation can lead to lens overheating, causing material degradation or even melting.

Misaligned Optical Path: If the optical path is not correctly aligned, the laser may deviate from the center of the lens, resulting in localized overheating and damage.

Solutions and Optimization Recommendations

To address these issues, Huawei Laser proposes the following solutions:

Optimize Cutting Parameters: Adjust laser power, focal length, and gas pressure according to material properties to ensure optimal cutting conditions and minimize lens damage.

Use High-Quality Protective Lenses: Huawei Laser recommends using professional-grade protective lenses with high-temperature resistance and excellent transmittance and regularly checking the coating condition.

Enhance Sealing Protection: Improve the lens installation structure to enhance sealing and prevent dust and slag infiltration.

Strengthen Cooling System Maintenance: Regularly inspect the water-cooling system to ensure effective heat dissipation for lenses and optical components.

Precisely Adjust Optical Path: Periodically calibrate the optical path to ensure proper laser beam alignment with optical components for increased cutting stability.

About Huawei Laser

Huawei Laser is a high-tech enterprise specializing in laser intelligent manufacturing technology. Its product includes laser cutting machines, handheld laser welding machine, and automation solutions. With outstanding research and development capabilities and extensive industry experience, Huawei Laser is dedicated to providing global customers with high-precision, high-efficiency laser processing equipment, driving the manufacturing industry toward an intelligent future.