How should a GTAW welder manage filler rod feeding?

In Gas Tungsten Arc Welding (GTAW), the technique for feeding the filler rod is critical for maintaining a stable and high-quality weld. Feeding the filler rod smoothly and consistently into the weld pool is essential to ensure that the arc remains stable and that the melting of the filler material happens in a controlled manner. This method allows for the filler rod to blend well with the base metal and thus achieve a uniform weld bead.

A steady feed helps the welder maintain proper control over the size and shape of the weld pool, preventing issues such as excessive spatter or distortion of the weld. It also minimizes the risk of introducing contaminants or creating voids in the weld due to erratic feeding. Smooth and consistent feeding enables the welder to adjust the heat input effectively, ensuring that the filler rod melts at the right rate to contribute to the weld without overheating the base material.

In contrast, pushing the filler rod forcefully could lead to quick melting but might disrupt the arc and create instability in the weld pool. Frequently removing the filler rod can lead to inconsistent weld quality and an increased risk of contamination. Feeding the filler rod intermittently may result in larger welds but can also lead to irregularities and defects within the weld if not managed properly. Thus