2 mig on one project

admin

Just a thought. I had two mig welders working On one product today and was wondering if this could cause a problem either to the welds or welders. One mig was a miller the other a lincoln. we were welding a cart together at the same time on a ungrounded welding table. The welders grounds were attached to the table but the table isn't hooked to any common ground. Is it possible that both electrical currents could affect the quality of the welds or even cause some sort of feed back at the welders.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.
Reply:Interesting question.  I don't think feedback into one of the welders is an issue.  Each welder has it's own welding circuit, from the power supply, through the arc, back to the power supply.  But I could be wrong, let us know if you smoke one of the welders.I do know multiple MIG and Submerged Arc processes exist, and that various tricks are employed to eliminate conflicting magnetic arc forces between two or more closely spaced arcs, such as using AC on one arc, or timing sequential pulsing of the arcs.  See the Lincoln "Tandem MIG" process.http://search.lincolnelectric.com/qu...=30&Search.y=5
Reply:Where I work, we have welded with several machines on one boat. Mig,tig and another mig with no trouble. But that is aluminum A/C. Sometimes the high freq will interfere with the mig machines, but not enough to cause problems.Bill
Reply:I've done this several times building trailers.  I'd be on one side and another guy on the other side welding a continuous bead the full length of the trailer with no problems.  Or the same thing on a dump truck with the feeders sitting right on the floor we were welding.DewayneDixieland WeldingMM350PLincoln 100Some torchesOther misc. tools
Reply:Did you have the trailers or dump truck grounded on it own cable. I have heard that you should ground eqiupment when welding on it. Not sure if it is necessary but thought I whould ask to see what the concenses is. Normally I weld trailers and other things by myself so it has never issue.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.
Reply:When we did defense work we'd have 3 of us tigging the same frame at the same time..steel..But every machine has to be grounded to the piece..Its only natural..Not a big deal.....zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Originally Posted by jamlitDid you have the trailers or dump truck grounded on it own cable. I have heard that you should ground eqiupment when welding on it. Not sure if it is necessary but thought I whould ask to see what the concenses is. Normally I weld trailers and other things by myself so it has never issue.
Reply:Yup, Willy is wrong again.
Reply:I haven't lost a machine yet (knock on something) I've done this same thing countless times, even in close proximity. I never saw any effects from it. BUT I have been know to be wrong from time to time._________________Chris
Reply:Look at it this way..Every machine has a power source..So if its in the same building then every machine shares the same ground in reality when you really disect this down to every last strand of wire..But this is not reality to some..Correct me if i'm wrong..So whats the big deal?...zap!I am not completely insane..Some parts are missing Professional Driver on a closed course....Do not attempt.Just because I'm a  dumbass don't mean that you can be too.So DON'T try any of this **** l do at home.
Reply:Thanks for the info guys. I was just wondering about it and thought I would ask.Miller DVI2Lincoln Precision Tig 225Thermodynamics Cutmaster 38Everything else needed.