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I MIG-suck all the sudden. Can shielding gas fail to migrate to the weld? MM 210

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  • I MIG-suck all the sudden. Can shielding gas fail to migrate to the weld? MM 210

    Hey gang. Geez... I put the Mig to the side for a while, and when I break it out to use it, my welds look like crappola. They are spattered, and ragged, and rather corroded looking. Tank full of 75/25 is full, and regulator seems to be regulating. I'm not sure how to check flow, but I'd swear it looks like the gas was never turned on. It's giving me a complex. Do gas valves fail on a 8 yr old Miller? How would you recommend I further diagnose?

    Lance

  • #2
    put some powder down and see if the gas blows it away. Could be a spider made a nest inside the machine. Wire good? Not rusted?
    Ed Conley
    http://www.screamingbroccoli.net/
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    • #3
      PICS Pls...............

      is it possible that you have some RUST on your filler wire.......???
      .

      *******************************************
      The more you know, The better you know, How little you know

      “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

      Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

      My Blue Stuff:
      Dynasty 350DX Tigrunner
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      • #4
        HA.... Broc.... Ya beat me....
        .

        *******************************************
        The more you know, The better you know, How little you know

        “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

        Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

        My Blue Stuff:
        Dynasty 350DX Tigrunner
        Dynasty 200DX
        Millermatic 350P w/25ft Alumapro & 30A
        Millermatic 200

        TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

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        • #5
          What wire are you running?

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          • #6
            Lance, what wire and size are you running, what heat settings are you using, and are you using the right size groove in the wire drive wheels? Could be your wire is rusted, sometimes it's hard to tell, you need to take a cloth and wipe the wire with it and look if rust is present. If it is, you may have to clean your wire drive wheels, liner and waste wire until you get to clean un-rusted wire.

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            • #7
              When you pull the trigger you should hear the gas solenoid "click" & gas should flow. Again these should be audible signs. Is your gun pushed in all the way? If you are not getting gas then it is simple to disconnect each connection to find the problem.

              Rusted wire will also make it run lousey. If it is you will have to unspool until you get clean wire.
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              • #8
                Since no one's thought of this yet, are you sure your wire isn't rusty?

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                • #9
                  Thanks for all the suggestions. Wire is stainless 308 @ .035. No rust to blame it on. I loosened tension on drive wheels and with gun near my ear, I'm hearing/feeling gas flow, so unless it's the wrong substance in the gas cylinder, I'm back to "good-ol-fashioned" sucking. :-)

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                  • #10
                    Originally posted by lpmartin View Post
                    Thanks for all the suggestions. Wire is stainless 308 @ .035. No rust to blame it on. I loosened tension on drive wheels and with gun near my ear, I'm hearing/feeling gas flow, so unless it's the wrong substance in the gas cylinder, I'm back to "good-ol-fashioned" sucking. :-)
                    You're running 75/25 not Tri-Mix for 308 Stainless Steel... ?????? (90% helium, 7.5% argon, and 2.5% carbon dioxide)

                    that might be your problem......

                    75/25 is usually used with ER70-S-"X" mild steel
                    Last edited by H80N; 02-17-2017, 03:42 PM.
                    .

                    *******************************************
                    The more you know, The better you know, How little you know

                    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                    My Blue Stuff:
                    Dynasty 350DX Tigrunner
                    Dynasty 200DX
                    Millermatic 350P w/25ft Alumapro & 30A
                    Millermatic 200

                    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

                    Comment


                    • #11
                      Yeah I'd say the 75/25 would be the root of your problem. Even with tri mix SS isn't real awesome, but better than what you're doing now.

                      If you still want to check / confirm gas flow rate, I recommend getting one of these little hooters.

                      https://www.arc-zone.com/shield-gas-flow-tester-50020

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                      • #12
                        Originally posted by H80N View Post
                        You're running 75/25 not Tri-Mix for 308 Stainless Steel... ??????...

                        that might be your problem......

                        75/25 is usually used with ER70-S-"X" mild steel
                        Ditto.

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                        • #13
                          There's a minor detail that he left off. I believe the second questions asked was "what wire"....

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