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  1. #1
    Join Date
    Nov 2006
    Location
    Canada
    Posts
    6

    Smile Aluminum Butt Joint With Tig

    Question about the joint. On some occasions when trying to do a but joint with aluminum I can not get the puddle started using the TIG process. For what ever reason the material just falls away and I cannot get a nice clean puddle started. I can really notice it when using diamond plate material. I ran into this problem again the other day with simple alumimum angle iron. The material is clean.

    This is a great site I purchased a Miller Syncowave 180 SD 3 years ago and might have 3 hrs on it. I enjoy metalworking and am now starting to use the welder a bit more.


    LUG

  2. #2
    Join Date
    Oct 2006
    Location
    DFW area
    Posts
    180

    Default

    I used to have to pre heat the begining of the weld area on some things. I'd keep a propane torch handy to warm up the area for a few inches around my starting point first, then it didn't seem to do that so much. And you may just have the power level turned up a little too much.
    "Gone are the days of wooden ships, and Iron men.
    I doubt we'll see either of their likes again".

    Circa 1920.
    Author:
    Unknown US Coast Guard unit Commander.

  3. #3
    Join Date
    Nov 2006
    Location
    Lake of the Ozarks MO
    Posts
    3,513

    Talking

    Sounds like the remote amperage control is not on so as soon as you start the arc it is whatever amperage you have the dial set on. You should be able to just barely hold an arc by adjusting the remote control whether it's hand or foot and then slowly apply more heat. HTH

  4. #4
    Join Date
    Nov 2006
    Location
    Canada
    Posts
    6

    Smile

    Thanks for the info. I will ckeck into the Remote amperage control. The thing I find funny is that I can run a nice bead on the flat, yet when the material is on edge it just falls away. With steel I never ever ran into this problem.

    Dave

  5. #5
    Join Date
    Oct 2006
    Location
    DFW area
    Posts
    180

    Default

    Quote Originally Posted by LUG View Post
    when the material is on edge it just falls away. With steel I never ever ran into this problem.

    Dave
    The 'window' where the material is hot enough to weld, but not too hot is much narrower on Alum. than it is for steel.

    You might try moving along faster, or turning down the heat.
    If the parent material falls away like that, its just too hot for the speed you're moving.
    "Gone are the days of wooden ships, and Iron men.
    I doubt we'll see either of their likes again".

    Circa 1920.
    Author:
    Unknown US Coast Guard unit Commander.

  6. #6
    Join Date
    Nov 2006
    Location
    Canada
    Posts
    6

    Smile

    I can understand that. Yesterday I was in the garage for hours, trying this and that. Some things worked and others did not. I appreciate the advice. Thanks.

    Lug

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