What is the typical gas flow rate range recommended for GTAW?

The typical gas flow rate range recommended for Gas Tungsten Arc Welding (GTAW) is indeed around 15 to 20 CFH (Cubic Feet per Hour). This range is considered effective for providing adequate shielding for the weld area while minimizing turbulence and disruptions that can affect the quality of the weld.

In GTAW, an inert gas, usually argon or helium, is used to protect the molten weld pool from atmospheric contamination. Too low of a flow rate may not adequately shield the weld, leading to oxidation or bonding defects, while too high a flow rate can create turbulence that disrupts the arc stability and can even cause excessive cooling of the weld pool.

Therefore, the range of 15 to 20 CFH strikes a balance that ensures the highest quality in the welding process by maintaining effective shielding without introducing complications that could detract from the weld’s integrity.