Using new Diversion 180 TIG, 230v, argon gas (10 cfh). Torch came with 3/32 Ceriated gray band tungsten, sharp point with very small flat end, #7 cup. Practicing on 1/8 steel using 120 amps. I get a good start, weld puddles but at the end of the weld while backing off the pedal while holding my tip above puddle for post gas flow, even using small circular motion the tungsten turns bright orange when pedal is released. I tried 75 amps, aluminum at 120 and 75 amps, same thing happens. Is this normal that the tungsten will turn bright orange? Thanks
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Tugsten glows orange after completing weld
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