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An auto-darkening welding helmet is a type of welding helmet that uses liquid crystal technology to darken the lens automatically when an arc is struck. This prevents welders from being exposed to the harmful ultraviolet (UV) and infrared (IR) light emitted by the welding arc.
Auto-darkening welding helmets are a relatively recent invention, first introduced in the early 1980s. They have quickly become the standard for welding helmets, replacing the traditional fixed-lens helmets that required welders to manually lower the shield before welding.
Auto-darkening welding helmets offer a number of advantages over fixed-lens helmets, including:
- Increased safety: Auto-darkening helmets provide automatic protection from UV and IR light, which can cause eye damage and skin burns.
- Increased productivity: Auto-darkening helmets allow welders to start welding without having to lower the shield, which saves time and improves efficiency.
- Increased comfort: Auto-darkening helmets do not require welders to constantly raise and lower the shield, which can be tiring and uncomfortable.
There are a number of factors to consider when choosing an auto-darkening welding helmet, including:
- The type of welding you will be doing: Different welding processes require different shade levels.
- The sensitivity of the auto-darkening sensor: The sensor should be sensitive enough to darken the lens quickly when an arc is struck, but not so sensitive that it darkens the lens unnecessarily.
- The features of the helmet: Some helmets have additional features, such as a built-in light or a grind mode, that may be important to you.
Auto-darkening welding helmets are an essential piece of safety equipment for any welder. They provide automatic protection from harmful UV and IR light, and they can help to improve productivity and comfort.
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