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Thin metal welding with miller mpi220p

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  • Thin metal welding with miller mpi220p

    Hi
    What is the best way to weld thin metal profile (2mm) without burn it throgh.
    I am using 1 mm wire with 80/20 mix

    What are the suggested setting .
    Some told me to increase the material thickness to 3.2 mm even though I'm working with 2 mm

    Haim

  • #2
    Don't weld it too hot or for too long. <br />
    <br />
    That was easy. Next question.

    Comment


    • #3
      Thought to change the gas to 75 25, though, had a looksee, being a newer machine and all. Are you in pulse mode, as thats what its designed for is sheet metal. Eliminates the warpage and keeps the plate reasonably cool

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      • #4
        I am using Miller MPI 220p<br />
        I will give it a try <br />
        <br />
        Haim

        Comment


        • #5
          Originally posted by jacob6u View Post
          Hi
          What is the best way to weld thin metal profile (2mm) without burn it throgh.
          I am using 1 mm wire with 80/20 mix

          What are the suggested setting .
          Some told me to increase the material thickness to 3.2 mm even though I'm working with 2 mm

          Haim
          See page #42 of your manual.... looks like there is ALREADY a preloaded program/parameters in memory

          https://www.millerwelds.com/files/ow...53918F_MLN.pdf



          BTW... where are you located... that model has not been available here in the US
          Last edited by H80N; 05-01-2016, 10:48 AM.
          .

          *******************************************
          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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          • #6
            Did I miss something? I think 80/20 wire is better than 75/25 for burn-through, and 85/15 or 90/10 better yet. S-3 wire at .030" (1.5mm) with C-15 (85/15) works for me for thin sheet steel.

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            • #7
              Hi<br />
              <br />
              As the machine has an auto setup or preloaded programs, of course I used it <br />
              however still I get those burns...

              Comment


              • #8
                Further on the the machine it there is a sticker with all the programs that can be used.

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                • #9
                  Originally posted by jacob6u View Post
                  Further on the the machine it there is a sticker with all the programs that can be used.
                  The programs on the chart shown on page #42 should get you close.... the rest will follow with practice and fine tuning of the settings

                  Each operator has differing speed and quirks in their techniques... so none of the canned programs will be prefect for everybody.... So... you must adjust your technique... AND...Practice... Practice... Practice...
                  Last edited by H80N; 05-01-2016, 05:14 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


                  • #10
                    You guys were way more help than I was. I feel dumb.

                    Comment


                    • #11
                      Hi guys <br />
                      Thank you all for your help.<br />
                      No doubt it all about practice

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