Laser welders are an amazing innovation in fabrication, but they do come with additional safety considerations compared to arc welding. Laser welders utilize fiber laser at near Infra-red (1060~1080 nm) wavelength, which can be hazardous to the eyes. Proper laser eye protection is essential for safe operation. Most fiber lasers emit high powered “near infrared” light, which our eyes absorb and process like visible light, even though we cannot see it. Unprotected eyes are susceptible to damage from this light. In addition to eye hazards, other potential dangers include fire, electrical risks, and asphyxiation.
Laser welders produce minimal to non-existent spatter, reducing the likelihood of burns and fires. They also create a smaller heat affected zone, lowering the risk of metal fume compared to arc welding processes like MIG, TIG, or stick welding. However, the reflected rays from a laser welder can still be intense enough to ignite fires.
UV production is significantly lower with a laser welder, with the main source being the white hot metal being welded. Nevertheless, there is a risk of heat burns from a reflected ray, especially when working with aluminum or other reflective metals. It is highly advisable to wear gloves. In close range, a direct reflection can cause instantaneous burns on the skin, inflicting pain similar to that from arc welding burns.
