welding ali chequer plate.

  1. ted junior member

    HI. I AM NEW TO THIS FORUM.I HAVE BEEN MAKING GATES FOR QUITE A FEW YEARS,HAD TO RETIRE AS WORK GOT TOO HEAVY.I HAVE NOW GONE INTO BREEDING PARROTS AND FIXING AND BUILDING COMPUTERS.BUT AS YOU HAVE BEEN A WELDER YOU CANT SEEM TO GET AWAY FROM IT.I HAVE A PROBLEM BECAUSE I WANT TO WELD ALIMINIUM CHEQUER PLATE.AND I HAVE NEVER DONE THIS BEFORE.I HAVE A 150 AMP WELDER.WHICH I KNOW WILL TAKE ALI WIRE AND ARGON GAS.BUT WHAT I WOULD LIKE TO KNOW IS THERE ANYONE OUT THERE THAT CAN GIVE ME SOME INFO.TO BE ABLE TO DO THIS AS I NEED TO MAKE SOME BIRD BOXS,SO IF YOU HAVE DONE ALI WELDING BEFORE WITH A MIG WELDER.I WOULD LIKE TO KNOW DOES IT WELD OK.I WILL BE USING 3ML ALI.AND BEFORE YOU ASK I CANNOT AFFORD A TIG WELDER. THANKS TED.:twisted: :-D :rolleyes:
     
  2. malcolm

    malcolm & Clementine the Cat

    Messages:
    9,126
    Location:
    Bedford UK
    I did my first Aluminium welding last year. It was a bit of a learning process - the wire is softer than steel wire and prone to buckling in the wire feed, and it needs a larger tip. See http://www.mig-welding.co.uk/aluminium-setup.htm for photos.

    For welding itself you need to get rid of the oxide layer, then push rather than pull the gun. It feels like a fine line between melting the aluminium and blowing holes. I found a reasonably high amp setting and a high speed of weld worked well, but the job was much easier with a brass backer to take the heat away. See http://www.mig-welding.co.uk/aluminium-welding.htm
     
  3. noplacetosail Member

    Messages:
    5
    Malcom had some good points

    Aluminum wire with mig is a touchy subject if you can't pulse. However, before we went to pulse we did it daily.
    -Clean ! and wire brush or use a disk pad to remove oxide layer
    - I must admit Ed Craigs weldreality site has more specific paramenters on what you are doing than any site on the net, search the "mig and flux core data" and " weld questions areas.

    good luck,
    www.weldguru.com
     
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