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TIG WELDING ALUMINUM TUBING .120" wall thickness

I used a clear #8 pro cup with 20 cfh of argon and a 3/32" (2.4mm) 2% lanthanated tungsten.

Using miller dynasty 280 basic pro settings of 70% ac balance and 120 hz on ac frequency.

Machine was set to 140 using the foot pedal.

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WELD PROCESS = TIG, GTAW, GAS TUNGSTEN ARC WELDING


METAL TYPE = ALUMINUM 6061

THICKNESS =  1/8” 

WELD TYPE = COPED TUBE JOINT

JOINT TYPE = COPED TUBE PARTIAL PEN

POSITION = FLAT

AMPERAGE = 140 AMPS CONTROLLED WITH FOOT PEDAL

TUNGSTEN = 2% LANTHANATED, 3/32"

FILLER WIRE = 3/32” 4043

POLARITY = AC

GAS FLOW = 20 CFH  

CUP SIZE =  8

ADDITIONAL SETTINGS =   AC BALANCE 30% CLEANING, AC FREQ 120HZ

PRE FLOW = 1 SEC

POST FLOW = 10 SEC

TIPS: KEEP A FAIRLY TIGHT ARC AND KEEP  TORCH ANGLE TO A MINIMUM

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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