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  1. #1
    Join Date
    Nov 2006
    Location
    Richmond Virginia
    Posts
    5

    Unhappy Whoops, forgot to turn on the ARGON Tig Welding

    Trying to teach myself to TIG welding with my Dynasty 200. I was all set up last night to practice on some 1/8 aluminum coupons using 3/32 Ce tungsten. When I started the arc this white frost covered everything. Hadn't seen that before. Figured I had screwed up the tungsten prep. Switched to 3/32 lanthana>>>same thing. Then I figured out that I hadn't turned on the argon at the tank. Duh!!!
    Anyway, this frost (al oxide???) is in the cup, on the tungsten and on the gas diffuser. Can I just resharpen the tungsten and blow out the cup/gas diffuser or do I have to throw them away and start over???

  2. #2
    Join Date
    Nov 2006
    Location
    DENVER, CO
    Posts
    15

    Default no worries

    Resharpen as often as you can and clean off everything else with compressed air or a soft, brass scratch brush....you'll save $$$ by reusing as often as possible (I sell the stuff for a living, and believe me, the price of tungsten will not be coming down anytime soon). Also, for welding on Al, you may want to try using a pure tungsten electrode....the pure tends to be a little more economical than the ceriated or lanthanated series and typically performs better when welding with AC on aluminum. The ceriated will work on the Al, but it does cost more and I've had much better luck with ceriated on aluminum by using either pure helium or a high helium blend gas (but the helium will increase your cost too).

  3. #3
    Join Date
    Sep 2005
    Location
    East Tennessee
    Posts
    141

    Default

    I've read you should never use pure tungsten with the inverter machines.
    Not sure why, just saw some warnings about not using pure with the inverters
    I didn't pay that much attention, because I run a transformer machine.
    HTH

  4. #4
    Join Date
    Nov 2006
    Posts
    6

    Default

    Yup that is correct from what I understand as well...with Inverter technology there is no need for pure tungsten or zirconiated and no need to ball the end. I use 2% thoriated everything and it seems to perform very well .
    Miller Dynasty 200DX
    MillerMatic 175
    Miller Spectrum 375
    Broco PrimeCut PC/OTC-20

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