Tag: TIG porosity
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TIG Torch Gas Leak Troubleshooting: Argon Loss, Black Tungsten, Porosity, and Torch Seal Checks
If a TIG torch has a gas leak, the weld may show black tungsten, gray weld color, porosity, sugaring on stainless, unstable starts, or a loud uneven gas hiss even when the…
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TIG Post-Flow Setting Troubleshooting: Black Tungsten, Porosity, Gas Waste, and Torch Cooling
TIG post-flow is the shielding gas that keeps flowing after the arc stops. If it is too short, the hot tungsten and cooling weld crater are exposed to air, causing black, blue,…
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TIG Torch Consumable Wear Signs: Cup Cracks, Collet Slip, Gas Lens Clogs, and Dirty Tungsten
Worn TIG torch consumables usually show up as dirty tungsten, rough arc starts, porosity, black soot, poor gas coverage, tungsten slipping, cup cracking, and inconsistent bead color. The problem is often not…
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TIG Shielding Gas Coverage Troubleshooting: Porosity, Soot, Tungsten Color, and Cup Setup
Poor TIG shielding gas coverage shows up as porosity, gray or black weld color, dirty tungsten, unstable arc starts, sugaring on stainless, and oxidation around the bead. The most common causes are…
