why a large gas lens for tig welding?
What advantage is it to use the large gas lens if your indoors tig welding?
*Use a large gas lens to provide better gas coverage.
To prevent porosity caused by inadequate shielding gas flow, follow the recommended flow rate, which is approximately 10 to 20 cubic feet per minute (CFM) depending on the application. Doing so helps ensure quality welds.
*A gas lens should be used when your application requires increased shielding gas coverage. The gas lens reduces turbulence and provides lengthier, undisturbed gas flow and allows you to move the nozzle farther away from the workpiece while still keeping the arc or weld puddle in view. Using a larger nozzle with a gas lens (which consequently produces a larger blanket of shielding gas) can help when welding on materials such as stainless steel and titanium. A gas lens also allows more direct and broader gas coverage on tight joints, such as an inside corner, where access can be limited. In critical applications that have potential for atmospheric contamination, a gas lens can help to reduce the likelihood of weld discontinuities.
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