Welding helmets are headgear used when performing certain types of welding to protect the eyes, face and neck from flash burn, ultraviolet light, sparks, infrared light, and heat. Most commonly used with arc welding processes such as shielded metal arc welding, gas tungsten arc welding, and gas metal arc welding. Welding helmets are necessary to p...
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http://en.wikipedia.org/wiki/Welding_helmet
[Eye and Face Protection] a shielding device using special absorptive lenses that filter the intense light and radiant energy that is produced during welding operations.
Found on
https://www.osha.gov/SLTC/etools/eyeandface/glossary.html
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