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  1. #1
    Join Date
    Jan 2013
    Posts
    1

    Question Aluminium TIG Welding

    Hi all,

    Just did a video of us doing some aluminium welding in the shed and was wondering if some of you could give me some feed back as to what we are doing wrong or right and if you think our assumptions are right. We are really new to this.

    https://www.youtube.com/watch?v=4naw88cM7is

  2. #2
    Join Date
    Nov 2012
    Location
    Northern Arizona
    Posts
    465

    Default

    No workie for me....
    MillerMatic 251
    CST 280 w/tig torch
    HF-251-D1
    Cutmaster 42
    Victor Journeyman OA

    A rockcrawler, er money pit, in progress...

  3. #3
    Join Date
    Aug 2004
    Location
    Milan Michigan
    Posts
    1,697

    Default

    Just before you ground your tungsten it looked like you had contamination on the tungsten, If the contamination is light I will grind as you did, but if its heavy contamination, I break the ball off then grind.

  4. #4
    Join Date
    Jan 2012
    Location
    Sierra Nevada
    Posts
    40

    Default

    I like the "shed".

  5. #5
    Join Date
    Oct 2012
    Location
    Appleton, WI
    Posts
    6

    Default

    Do you have an inverter based machine? If so I would recommend increasing the AC frequency to 120+ hz to help focus the arc. Having an EN balance in the 68-75% range will help reduce the balling effect on the tungsten electrode. When you grind the tungsten, put a small land or flat spot on the end instead of a perfect point.

    As far as your technique, if you are able follow the recommendations above, decrease the arc length slightly. Whenever the end of the filler material forms a ball before being introduced to the weld puddle there is too much heat. This can come from excessive arc length, excessive torch (push) angle, or insufficient filler material diameter.
    Andrew Pfaller
    Product Manager
    Miller Electric Mfg. Co.

  6. #6
    Join Date
    Jan 2012
    Location
    Sierra Nevada
    Posts
    40

    Default

    Well put.

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