Which part of a TIG torch helps produce laminar flow of shielding gas?

Which part of a TIG torch helps produce laminar flow of shielding gas?

• A. Gas lens
• B. Gas regulator
• C. Shield cup
• D. Nozzle tip

Answer: (A)

Laminar shielding gas flow is created by smoothing and directing the gas as it exits the torch so it blankets the weld without creating swirls or eddies. The gas lens acts as a diffuser and diffuser disk system that straightens and evenly distributes the shielding gas, forming a stable, uniform curtain around the weld. This design reduces turbulence and backflow that can occur from the torch cup and nozzle, delivering consistent coverage even at different angles and distances. The regulator controls pressure, the shield cup shapes the overall gas envelope, and the nozzle tip sets the exit size, but none of these inherently produce the smooth, laminar flow the lens provides.

Laminar shielding gas flow is created by smoothing and directing the gas as it exits the torch so it blankets the weld without creating swirls or eddies. The gas lens acts as a diffuser and diffuser disk system that straightens and evenly distributes the shielding gas, forming a stable, uniform curtain around the weld. This design reduces turbulence and backflow that can occur from the torch cup and nozzle, delivering consistent coverage even at different angles and distances. The regulator controls pressure, the shield cup shapes the overall gas envelope, and the nozzle tip sets the exit size, but none of these inherently produce the smooth, laminar flow the lens provides.