No pulsed MIG process with CO2 only?

  1. Kalts Member

    Messages:
    44
    Location:
    Estonia
    Hi

    I had CEA demo today and took notice that they used Ar/CO2 mix.

    I took a deeper look at the process table and with CO2 only there are no pulsed processes, only standard MIG/MAG. There are pulsed processes for pure Argon, these are for aluminium. All other processes are using different kinds of Ar/CO2 mix.

    I plan to not rent but buy-out the CO2 cylinder, just as I did with Ar for TIG.
    Given that I have AC/DC TIG and do not foresee need for aluminium MIG, am I just throwing money to the wind? Seems that with CO2 only I will not benefit from pulsed MIG welder at all?
     
    Parm likes this.
  2. Brad93

    Brad93 M J B Engineering

    Messages:
    10,404
    Location:
    Essex
    No, because CO2 doesn’t permit the spray type transfer of pulse.
     
  3. Kalts Member

    Messages:
    44
    Location:
    Estonia
    I know nothing about MIG, never had one.

    @Brad93, thank you for confirming, I got the same impression after digging around the 'net.

    I am sure that all everyday MIG users know that, but here is another point worth
    knowing: with CO2 only one cannot get into the spray transfer mode at all, does
    not matter pulsed or not. All you get over around 150A would be globular transfer.
    For spray transfer you must use Ar/CO2 mix and not all ratios are perfectly suitable.

    Now off to search for reliable small common MIG unit with 4-roll drive...
     
  4. Jim Davey

    Jim Davey R H Davey Welding Supplies Ltd

    Messages:
    5,535
    Location:
    Southampton
    EWM Picopulse 180...
     
    Country Joe and Brad93 like this.
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