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Starts welding good then doesent

Made six three inch passes on a steel table legs. when i tried welding the wheels on nothing but pin holes and spatter. wire size .030 . gas is 75/25 argon. steel was clean . its done this before.

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Check the gas flow, set around 15-20lts/min, check that gas is coming out of the nozzle by using an add on flow meter to the nozzle if there is a difference then you have a leak in the line and will be drawing air into the gas stream which will cause the holes,
using a gas flow that high will also cause porosity. gas should be
argon/oxy or argonC02 mix 2% or 20%

Posted on Jan 23, 2009

  • Ron Jones
    Ron Jones Jan 23, 2009

    Make sure you have the torch at the correct angle to give good gas coverage

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Hi, This problem has happen to me, My solution was a grounding problem. Take your ground cable, and put it on the table leg.

If this doesn’t work for you, please write back. Thanks,

Posted on Nov 28, 2008

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