Welded glasses provide a level of eye protection while some form of welding and cutting is being done. They are intended to protect the eye not only from heat and optical radiation generated by welding, such as the strong ultraviolet rays generated by an electric arc, but also from splashes or debris. Full face mask may be needed for arc welding.
Welding and cutting processes, including arc welding and cutting, and brazing produce intense ultraviolet (UV), infrared (IR) and visible light wavelengths. UV and IR wavelengths can not be seen and can cause eye injury without the victim immediately noticing it. A very dark filter of the right kind is needed for the welder to be able to see the highly shiny metal being welded. Face shields or approved welding helmets can also have filters for optical radiation protection, and offer additional protection against splinters and sparks. UV blocking protective goggles with side guard or welding glasses is considered the primary protection, with a face shield or a welded helmet considered as a secondary protection. In this way, the eyes are still protected even when the face shield or helmet is lifted.
Optical filters in welding glasses, face masks or helmets should be the type suitable for the type of work performed. Filters suitable for gas welding, for example, should not be used for arc welding. A self-dimming face mask is available for arc welding, MIG, TIG, and plasma cutting, and allows better vision before the arc is struck and once extinguished. Failure to use such protection when arc welding or even near the arc welding place may result in a painful condition called "bow eye" or fotokeratitis, which is similar to the severe sunburn of the cornea and conjunctiva of the eye.
Video Welding goggles
See also
- Oxy-fuel welding and cutting
- Weld mask
Maps Welding goggles
References
External links
- Recommended filter density for welding, brazing and cutting, per American Welding Society
- OSHA standard 1910 Sub part I Application B: Personal protective equipment
- OSHA standard 1910.252 (b) (2) (ii) (H): "Las, Cutting, and General Licensing Requirements
Source of the article : Wikipedia
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