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  1. #1

    Default What gas mix do you guys use for spray mig welding >.375

    Myself and my 350P want to do some 1/2 inch steel and was wondering what mix is the one you currently use for spray on mild steel plate with .045 70s-6 wire? C10 C15 C20 ?

  2. #2
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,678

    Default

    98/2 thats 98% argon 2% oxygen

  3. #3

    Default

    thanks cruzier, but not interested in trying anything with oxygen.

  4. #4
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,678

    Default

    Thats a spray gas mix, which is what you were after. Near spray with your machine cranked, you can try 85/15 15 being C02

  5. #5

    Default

    Ok one for C15

  6. #6
    Join Date
    Mar 2011
    Location
    st-eustache qc.canada
    Posts
    209

    Default

    We use blueshield23 and are very satisfied with it. ar,co2,o2.

    What are your reasons for avoiding oxygen?

  7. #7
    Join Date
    Nov 2003
    Posts
    3,110

    Default Praxair Gas Manual

    Here is the link to a useful gas manual.... it explains which gasses and mixes to use for what...... and explains WHY...

    http://www.prest-o-sales.com/other_l...n%20Manual.pdf
    .

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  8. #8
    Join Date
    Mar 2007
    Location
    Deltaville, VA
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    2,239

    Default

    I use C10 (90% Argon/10%CO2) for non pulsed spray. When you get up to 15% CO2, you're approaching a mix (generally around 18% CO2) that's likely to produce a globular transfer vs a true spray.

    The 98%Argon/2%O2 is a little hotter than the C10 and I'll use it infrequently, since my main mixer (Thermco) is set up for Ar/CO2.

    For pulsed spray I'll use a 95%Argon/5%CO2 mix or the 98%Argon/2%O2.
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  9. #9

    Default

    Quote Originally Posted by snowbird View Post
    We use blueshield23 and are very satisfied with it. ar,co2,o2.

    What are your reasons for avoiding oxygen?
    http://www.weldreality.com/spray_transfer_above100.htm

    Ed is an acquaintance of mine.

  10. #10

    Default

    Quote Originally Posted by H80N View Post
    Here is the link to a useful gas manual.... it explains which gasses and mixes to use for what...... and explains WHY...

    http://www.prest-o-sales.com/other_l...n%20Manual.pdf
    pg 41 added some insight thanks

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