Brown oxide
Hello : I am new to Tig welding and have a DV 200 Everlast with a number 9 torch and a 3/32 tungsten sticking out about 1/2", gas lense and a number 8 cup . My argon is set to 15 cfm , pre-flow about 2 --post flow 4 . I am practicing on 18 gauge at about 40 amps . My practice parts are clean , but recently I'm getting a brown oxide on my welds and the tungsten seems to me burning up faster than before. --Any ideas as to what I'm doing wrong?
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