What can happen if the shielding gas flow is too high during GTAW?

If the shielding gas flow is too high during Gas Tungsten Arc Welding (GTAW), it can disrupt the arc. An excessively high flow rate can create turbulence in the area surrounding the arc, leading to instability. This turbulence can wash away the protective gas shield intended to prevent oxidation and contamination of the weld pool, ultimately compromising the quality of the weld. The arc may become erratic, making it difficult to maintain a consistent and controlled welding operation.

A well-regulated shielding gas flow is crucial for optimal welding conditions; too low may expose the weld to contamination, while too high can create the opposite issue with excessive movement around the arc. Therefore, understanding and controlling gas flow rates is essential for successful GTAW operations.