Welding vertical uphill with dual shield flux core is much easier than with short circuit mig.
Little or no manipulation is needed in order to get a nice flat bead with little convexity.
As long as polarity is correct (dcep) and voltage, wire speed, and CTWD are in the ball park, dual shield is a great choice for vertical uphill welding.
Settings change with brand of wire and diameter but for this particular weld...a vertical uphill fillet weld on 1/4" thick box tubing, ... .035" Lincoln 71m was used along with 23.5 volts and 370 ipm of wire speed.
Another great thing about dual shield flux core as opposed to bare wire mig is that less metal prep is required.
WELD PROCESS = DUAL SHIELD FLUX CORE, FCAW-G ( GAS SHIELDED), OUTERSHIELD
METAL TYPE = CARBON STEEL
THICKNESS = 1/4”
WELD TYPE = FILLET
JOINT TYPE = TEE
POSITION = 3F VERTICAL UP
VOLTS = 23.5 volts
WIRE SPEED = 370 IPM
WIRE SIZE = .035” LINCOLN 71M
POLARITY = DCEP
GAS FLOW = 25-35 CFH C25 GAS
CTWD (STICKOUT) = 3/4”-1 “
FILLER METAL = LINCOLN 71M OUTERSHIELD .035"
ADDITIONAL SETTINGS =
TIPS: VERY LITTLE MANIPULATION NEEDED.
CTWD (CONTACT TO WORK DISTANCE) SHOULD BE 3/4”-1” A longer stickout aka contact to work distance CTWD of 3/4” to 1” provides best results Using too short a stickout can result in worm tracks
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