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  1. #1
    Join Date
    Mar 2011
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    st-eustache qc.canada
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    226

    Default Is there a welding gas interchange chart between linde, praxair and airliquid ?

    Long story short, i switched from blueshield23 (ar-co2-oxygen) wich i liked (but not the suplyer) to linde argoshield 8c (92%ar-8%co2) wich i hate.

    Argoshield 8c runs colder, have to raise power on machine, spark is brighter may have to go one shade darker, does more spatters on the work and in nozzle... more spatter block, smoke etc...

    I know some welders dislike presence of oxygen in a shielding gas but for me and what i do it fits the bill perfectly.

    Any suggestions for an equivalent or a place to get an interchange of some kind?

    tahnk's

  2. #2
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
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    257

    Default

    Ive never heard of a welding gas with oxygen in the mix. U must be confused. The whole purpose of the inert gas is to keep oxygen away from the weld puttle. Oxygen = oxidation & porosity. Things you dont want .
    .
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    Work better & less parts to stock.
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    Oxygen/Acetylene torch set 50'
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  3. #3
    Join Date
    Nov 2003
    Posts
    3,265

    Exclamation

    NOPE... You must be confused... gas selection depends on a number of factors
    and oxygen is often added to improve wetting... from what SNOWBIRD posted.. sounds like he is doing Spray Transfer...
    here is a link to the Praxair shielding gas manual... it will explain the physics of it... as well as the formulas and the reasoning behind them

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

    Quote Originally Posted by eecervantes83 View Post
    Ive never heard of a welding gas with oxygen in the mix. U must be confused. The whole purpose of the inert gas is to keep oxygen away from the weld puttle. Oxygen = oxidation & porosity. Things you dont want .

    Quote Originally Posted by eecervantes83 View Post
    What you need is c-25. Minimal splattrr burns hotter because it contains more co2.
    C25 is NO GOOD if you are going to spray transfer on ferrous metals.. most spray arc mixes have less than 10% CO2..

    BTW... while not commonly used in the US... the welding process that we refer to here as MIG (Metal Inert Gas)... is often referred to as MAG (Metal Active Gas) in other parts of the world... both O2 and CO2 would be considered "Active Gasses"
    Last edited by H80N; 12-06-2013 at 11:50 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...

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  4. #4
    Join Date
    Dec 2013
    Location
    Round Rock, Texas
    Posts
    7

    Default correct information

    Quote Originally Posted by eecervantes83 View Post
    Ive never heard of a welding gas with oxygen in the mix. U must be confused. The whole purpose of the inert gas is to keep oxygen away from the weld puttle. Oxygen = oxidation & porosity. Things you dont want .
    You are absolutely correct. I bet the poster meant CO2.

  5. #5
    Join Date
    Mar 2011
    Location
    st-eustache qc.canada
    Posts
    226

    Default

    Quote Originally Posted by aggieengineer View Post
    You are absolutely correct. I bet the poster meant CO2.

    you loose, the poster meant and still mean oxygen. And it's not unusual to have oxygen in welding gas mix.

    Take some time to read the whole thing

  6. #6
    Join Date
    Nov 2003
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    3,265

    Default

    Quote Originally Posted by aggieengineer View Post
    You are absolutely correct. I bet the poster meant CO2.
    NOPE...No Mistake.... Oxygen..

    aggieengineer... you are WRONG!!!

    Just because you are not familiar with it.. does not make it incorrect..

    read the entire thread and the reference links before making a foolish pronouncement

    pls read the manual..

    AND Get Your Facts STRAIGHT...!!!!

    http://www.prest-o-sales.com/other_l...n%20Manual.pdf
    Last edited by H80N; 12-31-2013 at 07:46 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..

  7. #7
    Join Date
    Nov 2003
    Posts
    3,265

    Default Argon/Oxygen MIG/MAG Blends

    Page #36 of the Praxair Gas Manual

    Praxair’s StarGold
    Blends
    The addition of small amounts of oxygen to argon greatly stabilizes the welding arc, increasesthe metal transfer droplet rate, lowersthe spray transition current, and enhances bead shape. The weld pool is more fluid and stays molten longer, allowing the metal toflow out towards the weld toes.
    Welding fumes may be reduced with these mixtures.



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

    Last edited by H80N; 12-31-2013 at 09:28 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..

  8. #8
    Join Date
    Aug 2012
    Location
    Hermiston Oregon
    Posts
    257

    Default

    What you need is c-25. Minimal splattrr burns hotter because it contains more co2.
    .
    Miller Bobcat 225NT onan
    Millermatic 211
    Spoolmate 100
    (Retapped to fit regular mig tips)
    Work better & less parts to stock.
    Miller 130xp
    T/A Dragster 85 (portability 11 pounds)
    Oxygen/Acetylene torch set 50'
    2. 4-1/2" grinders
    1. 9" grinder
    14" Makita chop saw
    1/2" Aircat impact gun 900#

  9. #9
    Join Date
    Jun 2009
    Location
    las vegas
    Posts
    227

    Default Is there a welding gas interchange chart between linde, praxair and airliquid ?

    Your trying to keep nitrogen out of a weld and excess hydrogen. 2% or more oxygen is used for hotter welding or spray transfer. As previously posted.
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  10. #10
    Join Date
    Mar 2011
    Location
    st-eustache qc.canada
    Posts
    226

    Default Thank-you HN80, you put me on track

    With your documented response and a little more time i found this link

    http://www.aoc.com.mx/biblioteca/tablas_conversion/COMPARATIVO_DE_GASES_DE_PROTECCION.pdf






    strictlycarved, i would not discard hydrogen too fast , a linde counter guy this morning, mentionned a gas containing some as an alternative for my regreted blueshield23...to be continued...

    thank's to all.
    Last edited by snowbird; 12-06-2013 at 01:24 PM. Reason: misspell nitrogen/hydrogen

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