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  1. #1
    Join Date
    Sep 2009
    Location
    Colorado
    Posts
    210

    Default The magic is on the AC side........

    When I was at FABTECH, I had an opportunity to chat at some length with one of the experts from ESAB about the merits of advanced inverter welders, especially for TIG.

    As he explained it "The magic is on the AC side", meaning that the sophisticated features generally apply only to AC welding. Therefore, one might be wasting money by buying a highly sophisticated welder, such as a Dynasty, if one is primarily or exclusively using DC for TIG welding.

    When I was discussing this with one of my friends, who is on the board of AWS, he suggested that this tip alone may have paid for my trip to FABTECH. That is, since I almost exclusively weld DC, I would be wasting my money to buy a high end TIG welder. I most frequently weld copper, and probably do not set my Syncrowave to AC more than once or twice a year. Nor do I weld stainless very often.

    So how do you guys who have advanced welders feel about his view, that most of the advantages of the advanced TIG welders apply on the AC side, not the DC side?

    Richard

  2. #2
    Join Date
    Nov 2003
    Posts
    3,210

    Smile

    I do a little bit of everything so I need the advanced AC features of the Dynasties.... I would be sunk with DC only machines..

    For me... the extra investment to have the Dynasty 350DX Tigrunner & Dynasty 200DX and their versatility... was money well spent...

    Of course if you use DC exclusively.. why invest in AC..??


    Sounds to me like the ESAB guy was trying to justify less capable machines.. and making that a selling point..


    I will admit to not being very impressed with today's ESAB... years ago they had been a pretty good outfit... but it seems that they have morphed into a marketing firm for OEM'd offshore stuff... sure have not seen anything innovative or interesting in their lineup...
    Last edited by H80N; 01-17-2014 at 11:42 AM.
    .

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  3. #3
    Join Date
    Jan 2014
    Posts
    17

    Default

    It's true. We have 3 Dynasty 350s and they never get used unless someone needs to play around with AC. If you don't specifically need AC then the high end machines are just a waste.

  4. #4
    Join Date
    Oct 2012
    Location
    yuba city, CA
    Posts
    54

    Default 350's useless for DC welding?

    Quote Originally Posted by jdj90 View Post
    It's true. We have 3 Dynasty 350s and they never get used unless someone needs to play around with AC. If you don't specifically need AC then the high end machines are just a waste.
    The DC pulse tailoring options available on the 350 allow for a much
    wider range than most inverters. Bead profile, heat input, etc.
    This is one of the reasons why Barrett welds the steel receivers on
    50 cal. sniper rifles with 350's.

    With SS welding these options help as well.
    Last edited by dave powelson; 01-17-2014 at 03:29 PM. Reason: addition

  5. #5
    Join Date
    Dec 2007
    Location
    Los Angeles
    Posts
    2,876

    Default

    Ed Conley
    http://www.screamingbroccoli.net/
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  6. #6
    Join Date
    Feb 2004
    Location
    Boulder, Colorado
    Posts
    483

    Default

    In the last 30 years, technology has brought benefit to AC gta welding ten fold as much as it has brought to DC. However, in the last 30 years, it has equally benefited dc pulsed gma, mostly for steel applications.

    The next frontier will be the application of asymmetric AC pulse for gma welding.

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