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Soot appearance on welds

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  • MintSScout
    replied
    It could of been zinc or candium coated.

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  • gearhead
    replied
    Can to much gas cause this problem too. I checked the gas and it was on but way to high??? made the change and it still still leaves a soot residue on the weld. Do you think the metal has somekind of material on it that is causing the residue. I started welding on another piece of scrap and the weld appearance was good again. All I can determine is the metal I was using had somekind of flim on it or the like.....

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  • MintSScout
    replied
    Check your gas. You be forgetting to turn it on, not haveing enough gas flow, or your gas is bad.
    Last edited by MintSScout; 09-01-2006, 05:54 AM.

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  • gearhead
    replied
    Jeez that was stupid, I'm TIG welding using Argon gas and standard mild metal filler rod.

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  • MintSScout
    replied
    What welding process are you using.

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  • gearhead
    started a topic Soot appearance on welds

    Soot appearance on welds

    Welding T joints on 1/4 flat stock (just playing around). I have notice soot on the weld surface. I have cleaned the material that I'm welding with a wire brush, but I still get a great deal of soot on the weld surface. The weld appearance looks good though. Any help on what I doing wrong would be greatfully accepted.
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