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? about mig welding

Discussion in 'The Lounge' started by 8_YOUR_H2, Mar 3, 2002.

  1. 8_YOUR_H2

    8_YOUR_H2 1/2 ton status

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    Hey, with a mig welder is it better to use C02 or Argon blend? With the argon blend does a person need 2 tanks?
    Just picked up a new Lincoln SP-135T...cant wait to lay a bead!!
     
  2. Bubba Ray Boudreaux

    Bubba Ray Boudreaux 1 ton status

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    I use the Argon/CO2 blend in one tank. Get as much tank as you can afford though. I have the smallest one and it doesn't last very long.
     
  3. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Just one tank. 75/25 welds smoother and with less spatter. CO2 supposedly gives slightly better penetration so, on a 135, that might be worth considering. Flux core gives still better penetration AND works better on dirty (or painted, or greasy) metal. Still, you should clean the metal before welding but… Flux core also works better out doors (wind blows away the gas but flux core will still work in a light wind).

    If I had a little 110 box, I would probably get some flux core and 75/25. The 75/25 is especially nice for light stuff like sheet metal and for welds that will be visible with little or no grinding.
     

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