Laser welding continues to attract interest in all sectors thanks to its precision, speed and ease of use. It is now indisputable that this technique, especially with innovations such as handheld laser welding machines, has opened up exciting opportunities for both welders and fabricators.
With innovations like portable handheld laser welders, this technique has opened up exciting opportunities for welders and fabricators alike. But as with any welding method, safety comes first. While many of the principles are similar to traditional MIG or TIG welding, laser welding introduces unique considerations that every welder should understand. This week I saw a useful article on IPG Laser and I wanted to go over it very briefly.
Brian Edwards
Laser welding involves concentrated beams of infrared light (around 1070 nm in wavelength) to heat and fuse materials. While its precision and efficiency are unmatched, the potential hazards are equally significant. Reflected laser light, even indirect, can damage eyes and skin if proper precautions aren’t taken. This makes understanding safety protocols vital, whether you’re an experienced welder or just starting with lasers.
We need to keep in mind that protective equipment is our first and most important line of defense. Laser safety glasses, with an Optical Density (OD) of 7+ rated for 1070 nm wavelengths, are non-negotiable for anyone near the welding area. Welders should also invest in laser-specific welding helmets, which shield against intense infrared light and visible brightness. Standard welding gear, like heat-resistant clothing and respirators (where ventilation is inadequate), rounds out the safety ensemble.
Workspace safety for handheld laser welding revolves around minimizing reflections and limiting exposure. A Laser Controlled Area (LCA) is essential, complete with barriers or curtains rated for Class 4 lasers. These enclosures prevent stray beams from endangering bystanders or causing accidental fires. Reflective surfaces like mirrors or polished metals should be removed or shielded to avoid scattering laser light. Proper signage, as mandated by ANSI Z136.1 standards, ensures everyone is aware of ongoing laser operations.
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