In setting up for a GTA weld on low carbon steel, what configuration should the tungsten electrode be?

When setting up for a GTA weld on low carbon steel, the tungsten electrode should be pointed. A pointed tungsten electrode allows for a focused arc, which is essential for achieving precise control over the weld pool and penetration. This is especially important when working with low carbon steel, as it enables better arc stability and control over heat input, which helps to avoid issues like burn-through or inadequate fusion.

The sharp point also aids in minimizing electrode wear during the welding process, ensuring that the electrode maintains its effectiveness throughout the weld. The geometry of a pointed electrode is crucial because it produces a concentrated arc that is efficient for welding, promoting better melting of the base metal and filler material if used. Proper electrode preparation contributes significantly to the overall quality and integrity of the weld.