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  1. #1
    Join Date
    Sep 2005
    Location
    Vernon Ct
    Posts
    117

    Default Pulse Mig Gas Question

    I just bought a MM350P with the xr alum pro gun last week. I have been running regular MIG mode due to the fact of not having time to play with the pulse. Well Saturday came and I had time. I got the pulse running nice. I used the book settings and dialed in the arc length and sharp arc settings.The book alse recomends a 90%argon/10Co2. I used my 75%argon/25%co2 tank with good results. I was thinking about getting a 90/10 tank on my next refill. Will there be any difference? I am welding steel by the way. I think I will be pulse mig welding everything now. It's really nice! What is the difference if any in the weld appearance or structual qualities with the 90/10?

    At 1st I was not impressed with anything except the guns smooth wire delivery over 25ft. It was'nt untill I got the pulsed mig going that I was amazed. I can't wait until I can run alum.
    Mike
    MD Welding & Fabricating L.L.C.
    mdwelding@sbcglobal.net

  2. #2
    Join Date
    Nov 2007
    Location
    Ontario, Canada
    Posts
    72

    Default

    Quote Originally Posted by MD Welding View Post
    I just bought a MM350P with the xr alum pro gun last week. I have been running regular MIG mode due to the fact of not having time to play with the pulse. Well Saturday came and I had time. I got the pulse running nice. I used the book settings and dialed in the arc length and sharp arc settings.The book alse recomends a 90%argon/10Co2. I used my 75%argon/25%co2 tank with good results. I was thinking about getting a 90/10 tank on my next refill. Will there be any difference? I am welding steel by the way. I think I will be pulse mig welding everything now. It's really nice! What is the difference if any in the weld appearance or structual qualities with the 90/10?

    At 1st I was not impressed with anything except the guns smooth wire delivery over 25ft. It wasn't until I got the pulsed mig going that I was amazed. I can't wait until I can run alum.

    Praxair's Mig Mix Gold (90-10) works well on pulse. I use Praxair's Stargon, 90%Argon, 8%CO2 and 2%Oxygen. I'm not a real weldor, and can't tell if there's a difference.

  3. #3
    Join Date
    Mar 2007
    Location
    Deltaville, VA
    Posts
    2,239

    Default

    MD Welding,

    Nice setup you've got there. Glad to hear the pulse is working out for you.

    Be careful, several posters (one of which I think was with Miller) have noted that the Push/Pull gun was designed for aluminum and a constant diet of steel wire will prematurely wear out the liner and that the liner for that setup is "VERY" expensive.

    Don't have a push/pull myself but thought I'd throw that caution out there. Might be worth a call to Miller tech support.

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