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

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  • 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
    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 .

    Comment


    • #3
      What you need is c-25. Minimal splattrr burns hotter because it contains more co2.

      Comment


      • #4
        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

        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 .

        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, 10:50 AM.

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        • #5
          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.

          Comment


          • #6
            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, 12:24 PM. Reason: misspell nitrogen/hydrogen

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            • #7
              Thank You...

              that Gas cross reference is one that I did not have

              a valuable reference..

              we helped each other out...



              Originally posted by snowbird View Post
              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 nitrogen 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.

              Comment


              • #8
                gas

                Dear "Snowbird",

                Oxygen has a low ionization energy and impacts the surface tension of molten metal. As a component in the shielding gases it can therefore get you into spray mode at lower voltage settings and it supports finer droplets resulting in less spatter. On the flip side, out of position welding becomes difficult and you may loose (burn off) some critical alloying elements. Linde offers several three component shielding gases containing Argon, Carbon Dioxide and Oxygen.
                Please contact us to evaluate you specific needs at 1 888-256-7359 which will connect you with your local retail location.


                Comment


                • #9
                  big brother is every where ;o)

                  Thank-you jcaporali, i contacted my linde sales rep. and he had a few suggestions that will likely meet my expectations.

                  I had no doubt about linde support, this posting was made to educate me from neutral point of view users here can provide.

                  Very satisfied with linde response so far and wasn't expecting drawing your service/support's attention on this forum.

                  Comment


                  • #10
                    correct information

                    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.

                    Comment


                    • #11
                      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

                      Comment


                      • #12
                        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, 06:46 AM.

                        Comment


                        • #13
                          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, 08:28 AM.

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