My Unimig 250 unbehaves

  1. Soren Hansen Member

    Messages:
    15
    Location:
    Sjaelland Denmark
    Hiya all

    After I changed to Argon my welder have started to misbehave. It seems that the sweetspot for welding don't exist on the machine, or is so narrow that I can't find it.

    It doesn't matter what power range I use, and the feedspeed is eighter to fast or to slow. The welder runs on 16A 400V and delivers without problems 230+ A when I welded an excavator bucket this summer. That said, it was full power and a feed of 70% [​IMG] http://www.mig-welding.co.uk/forum/media/20161024_192221.9306/ [/IMG]

    The symptoms is "motorboating" or a sizzling sound and it looks like it was a TIG welder, not as when I used CO2.

    The machine is capable of welding aluminium, and that is why I went the Argon way.

    Should I just give up Argon or what ?

    Anyway happy hollidays soon to you all
    Soren
     
  2. cumbriasteve

    cumbriasteve Moderator

    Messages:
    9,660
    Location:
    Cumbria UK
    Are you using pure argon or an argon C02 mix?
     
  3. slim_boy_fat

    slim_boy_fat Forum Supporter

    backpurge likes this.
  4. Soren Hansen Member

    Messages:
    15
    Location:
    Sjaelland Denmark
    cumbriasteve it is pure Argon.

    slim_boy_fat yaeh that's what I've come to myself, the Argon is with another type of regulator specific for Argon.

    Hmmm looks like I have to change setup ..... oh well ..... 2 different wrenches, chain of switch chain on (why do I start thinking "Karate kid ??? )

    Anyway thank you both, I was going nuts why it didn't do what I wanted, looks like I was wrong

    Cheers
    Soren
     
  5. slim_boy_fat

    slim_boy_fat Forum Supporter

    Hope that gets you going again, without problem, Soren. :waving:
     
  6. Soren Hansen Member

    Messages:
    15
    Location:
    Sjaelland Denmark
    Hope so too, I have a lorry that needs some welding slim_boy_fat
     
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