TIG WELDING ON DISSIMILAR OR UNKOWN STEEL - SNAP ON WRENCH TO 4140

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


METAL TYPE = CHROMIUM VANADIUM STEEL TO 4140

THICKNESS =  1/4" 

WELD TYPE = FILLET WELD   

JOINT TYPE = BUTT

POSITION = FLAT

AMPERAGE = MACHINE SET TO 140  AMPS CONTROLLED WITH FOOT PEDAL

TUNGSTEN = 2% LANTHANATED, 3/32"

FILLER WIRE = .063” HASTELLOY W (AMS5786)

POLARITY = DCEN

GAS FLOW = 20-25 CFH argon

CUP SIZE =  12

ADDITIONAL SETTINGS =    

PRE FLOW = .2 SEC

POST FLOW = 11 SEC

TIPS: KEEP A FAIRLY TIGHT ARC AND WATCH TORCH ANGLE

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.  



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