heat amp settings

by bill
(Sugarloaf pa.)

I'M a pipe welder but mostly 6010 and 70s2 i haven't had the opportunity to do much stainless pipe but i am going to soon it will be sch10 fusion and schedule 40 open but, 1/8 filler rod and I was wondering before i take my test, for a 6g pipe test, what is a good way to set my heat and what are the parameters for 1/8 open but and sch 10 fusion

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first off, you will need to purge with argon.
that means taping the ends, and taping the gap except for where you are welding.

its a whole big process.

setting the amperage for a root pass is difficult to say without knowing more but generally, 60-75 amps for the root pass ...same for hot pass, and slightly hotter for subsequent passes.

for the schedule 10 fusion welds, I am guessing around 55-65 amps.

with purge on you can make test spots. light up for 3 seconds and stop and check penetration with a flashlight. if not penetrated, increase amps by 5 until it does...pay attention to changes in the puddle every time. you will probably notice something like a little dot swirling around differently when it penetrates.

this is what you will need to watch for on the test . the puddle will change as soon as it penetrates...so making adjustments to maintain that look goes a long way to ensure consistent penetration.