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  1. #1
    Join Date
    Nov 2011
    Posts
    1

    Default welding aluminum overhead

    I've been having difficulty trying to keep the arc on the upper ( horizontal ) member , any help would-be appreciated. This is on a semi trailer

  2. #2
    Join Date
    Jul 2008
    Location
    Flin Flon & Creighton area
    Posts
    232

    Default what process? mig tig?

    Hello, we need more info to give informed advice. If your using MIG your gun angles and how clean the base metal could be a place to start. Are you pushing or dragging your puddle ? What shielding gas are you using? How thick of base metal are you trying to weld. I assume your welding a lap joint or a inside corner ? all of these variables will have an effect on how good of a job you will be able to do.
    I have a welding addiction

    ...the only stupid question is the one you didn't ask

  3. #3
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,233

    Default

    Quote Originally Posted by GarySS View Post
    I've been having difficulty trying to keep the arc on the upper ( horizontal ) member , any help would-be appreciated. This is on a semi trailer
    As with the above note, what equipment are you using for this task??

    Maybe a spoogun, as its very unlikely your going to do it with a mig gun, and if your attempting to do overhead with an Aluminum stick, just forget about it.

  4. #4
    Join Date
    Sep 2005
    Location
    Salem ,Ohio
    Posts
    3,861

    Cool

    Thats the one thing all of the welding vids that show how to weld alum don't show. They all show nice flat welds and how easy it is. Now you have a non textbook weld. If with mig and you have cleaned the alum and have enough heat to do the weld. I hold my gun just like welding in the flat at a 45 to the corner and tipped back about 10 degrees then i make little circles to keep everything flowing. Just my thought and how i do it yours may vary...Bob
    Bob Wright, Grandson of Tee Nee Boat Trailer Founder
    Metal Master Fab Salem, Oh 44460
    Birthplace of the Silver & Deming Drill
    1999 MM185 w/185 Spoolgun,1986 Thunderbolt AC/DC
    Spool Gun conversion. How To Do It. Below.
    http://www.millerwelds.com/resources...php?albumid=48

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