Which component is used to improve gas flow uniformity in a TIG torch?

Which component is used to improve gas flow uniformity in a TIG torch?

• A. Gas lens
• B. Tungsten tip
• C. Shield cup
• D. Gas converter

Answer: (A)

Gas flow uniformity around the TIG arc is improved by the gas lens. The gas lens shapes the Shielding gas as it exits the nozzle, turning the flow into many small channels that recombine into a smooth, laminar curtain around the arc and weld pool. This reduces turbulence and prevents gaps in shielding, helping keep the weld area protected from air contamination for a cleaner weld. The tungsten tip is the electrode that forms the arc, not the flow-shaping device. The shield cup confines and directs gas but doesn’t by itself create the uniform distribution a gas lens provides. The gas converter isn’t a standard TIG component that affects shielding gas flow.

Gas flow uniformity around the TIG arc is improved by the gas lens. The gas lens shapes the Shielding gas as it exits the nozzle, turning the flow into many small channels that recombine into a smooth, laminar curtain around the arc and weld pool. This reduces turbulence and prevents gaps in shielding, helping keep the weld area protected from air contamination for a cleaner weld. The tungsten tip is the electrode that forms the arc, not the flow-shaping device. The shield cup confines and directs gas but doesn’t by itself create the uniform distribution a gas lens provides. The gas converter isn’t a standard TIG component that affects shielding gas flow.