What does "gas tungsten arc welding" (GTAW) refer to?

Gas tungsten arc welding, commonly referred to as GTAW, is another name for TIG (Tungsten Inert Gas) welding. This process uses a non-consumable tungsten electrode to produce the weld and requires an inert gas, typically argon or helium, to protect the weld area from atmospheric contamination. The process is known for its ability to create high-quality, precise, and clean welds on a variety of metals, including stainless steel, aluminum, and copper alloys.

In this method, the welder can control the heat input and the amount of filler metal that is added to the weld, allowing for greater maneuverability and versatility in different welding positions. GTAW is especially favored in applications where aesthetics and weld integrity are critical, such as in aerospace and automotive industries. Understanding this process is crucial for developing advanced welding skills, making it a foundational topic in welding education.