What Shade of Lens Is for TIG Welding?
Welding was a crucial invention involving the process of joining metals together. In 1941, gas tungsten arc welding, or TIG welding, became perfected and patented by Meredith. TIG welding is so extremely bright and damaging to the eyes that helmets are needed with different lens shades. This welding needs some of the darkest ranges of lens shades on the market.
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TIG Welding
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TIG welding is a very clean and economical process. It can take more time to perform than other forms of welding. The metals are fused together by the heat of the electric arc within the protection of inert gas. The TIG arc is extremely hot, allowing the user to provide maximum heat to a small area.
Welding Helmets
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There are two kinds of welding helmets. One is a standard helmet in which the user must change the shade of the lens when welding different metals. The other are electronic helmets that will change the shade automatically based on the brightness of the arc. The shades for the lens in the helmet ranges from one to 14.
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TIG Len Shades
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The lens shade should be strong enough to protect the eyes but still allow the weld to be seen. TIG welding that uses less than 50 amps can use a number eight shade. Welding between 50 and 150 amps should use a number 11 or a number 12 shade. Pick the darker of the two when choosing a shade; you can always move down a shade if it feels like the eyes won't be damaged.
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References
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