MIG WELDING CARBON STEEL 1/4" THICK OUTSIDE CORNER DOWNHILL ROOT UPHILL COVER PASS
scroll down for exact settings used
Sometimes you need 100% penetration and a leak proof weld on an outside corner joint. If the fitup has a 3/32" -1/8" gap the first pass can be welded downhill and the second uphill to ensure full fusion
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20 VOLTS 200 IPM .035” ER70S6
WELD PROCESS = GMAW, SHORT CIRCUIT MIG, GAS METAL ARC, BARE WIRE MIG
METAL TYPE = CARBON STEEL, COLD ROLLED STEEL, AISI 1010
THICKNESS = 1/4""
WELD TYPE = FILLET
JOINT TYPE =open butt OUTSIDE CORNER
POSITION = 3F PLATE downhill root
VOLTS = 20 volts
WIRE SPEED = 200 IPM
WIRE SIZE = .035"
POLARITY = DCEP
GAS FLOW = 20-25 CFH C25 GAS
CTWD = 3/8”-1/2"
FILLER METAL = ER70S6 .035"
ADDITIONAL SETTINGS =
TIPS:A relatively short stickout aka contact to work distance CTWD of 3/8” to 1/2" makes a big difference.
The technique shown is a very slight side to side motion while keeping the arc on the front edge of the puddle while not far enough to shoot wire thru the gap.
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