Tig Walking the Cup Stainless to Carbon Steel pipe 3" sched 40 .300" wall

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WELD PROCESS = TIG, GTAW, GAS TUNGSTEN ARC WELDING,  

METAL TYPE = carbon steel PIPE TO STAINLESS FLANGE

THICKNESS = 3 inch  SCHED 40 PIPE .300" wall

WELD TYPE = groove   

JOINT TYPE = BUTT WELD

POSITION =   ROLLED IN JACK STANDS 

AMPERAGE = 105-125 AMPS

TUNGSTEN = 2% LANTHANATED, 3/32"

FILLER WIRE = 1/8” ER309L

POLARITY = DCEN

GAS FLOW = 20 CFH argon

CUP SIZE =  8

PRE FLOW =  MANUAL

POST FLOW =  10

ADDITIONAL SETTINGS =   ARGON PURGE AT 25CFH REDUCING TO 10 CFH AT THE END

TIPS: EXTEND ELECTRODE ENOUGH TO GET A DECENT ANGLE SO THAT WALKING THE CUP OR FREEHAND WELDING BOTH WORK WELL …

Aim for an arc length that is equal or less than the diameter of your tungsten electrode.

Torch angle can be forgiving provided your arc length is tight.Keep the hot tip of the filler wire shielded by the argon envelope from the tig cupSnip oxidized tip of filler metal before a restart