What is the primary function of a welding mask?

The primary function of a welding mask is to protect the welder’s face and eyes from UV radiation and sparks. During the welding process, intense light and harmful ultraviolet rays are generated, both of which can cause serious injury to the eyes, including conditions like arc eye or photokeratitis. Additionally, welding produces flying sparks and molten metal that can pose a risk of burns and injuries to the skin and face. A properly designed welding mask with adequate filters and shields is specifically made to block harmful radiation and provide a barrier against these physical hazards, ensuring the safety and well-being of the welder while performing their tasks.

The other options touch on aspects related to welding but do not accurately represent the primary purpose of a welding mask. For instance, though visibility can be important during welding, enhancing visibility is secondary to the safety provided by the mask. Airflow improvement is not a primary function associated with traditional welding masks; special equipment is needed for ventilation. Insulation against heat is also not the main role of a welding mask, as its primary design focus is protection from radiation and physical dangers.