What is the primary function of wearing a welding helmet?

The primary function of wearing a welding helmet is to protect the welder from harmful rays. When welding, intense light is produced, which includes harmful ultraviolet (UV) and infrared (IR) radiation. Prolonged exposure to these rays can cause serious eye damage, such as flash burn or permanent vision loss, as well as skin burns. A welding helmet is specifically designed with a filter lens that protects the eyes and face from these harmful effects.

While enhancing vision can be part of the helmet's design through the use of specific lens shades, the main purpose is safety from the intense light and radiation associated with welding. Thus, the helmet serves as a critical piece of personal protective equipment to ensure the welder's eyes and skin are safeguarded during the welding process.