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  1. #1

    Default spoolmatic 30a connected to trailblazer 350 pro D

    I'm trying to weld holes in aluminum fuel tanks and cant get the gun to get a good bead going. First the gun is burning up tips like crazy because I have to turn up the machine to like 160 to 180 to get the bead going, usually I only need to be around 80 to 90 or so. what should I try to troubleshoot this problem?

    thanks,
    sressed out

  2. #2
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    Kinda need to know type of wire, gas used, thickness of tank, preheat ect.....

    You MUST be in CV, obviously your in CC if your turning the amps up.

  3. #3

    Default

    using alum wire .30, 4043 made by Aufhauser. running straight argon. tank is 3/16'' wall thickness. and yes i'm in cv no preheating. I havnt even started welding yet still trying to set the gun right.

    thanks

  4. #4
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    Going to need preheat if your running 030, 035 not as much as its much higher in amp/volts. Lucky to get any puddle going with such small wire and no preheat.

  5. #5

    Default

    Thanks for the advice. What setting should the amps be set to? Also i'm a little weary of preheating the base metal first as the tank is actually inside the hull of the boat on site. I usually would use a cutting torch to preheat but i fear this may be too much heat for this application.

  6. #6
    Join Date
    Nov 2003
    Posts
    3,150

    Default

    Quote Originally Posted by bigjibz View Post
    Thanks for the advice. What setting should the amps be set to? Also i'm a little weary of preheating the base metal first as the tank is actually inside the hull of the boat on site. I usually would use a cutting torch to preheat but i fear this may be too much heat for this application.
    Are you POSITIVE that you are in CV mode??... in CV you set the VOLTAGE not Amps

    You set AMPS in CC mode only...
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

  7. #7

    Default

    my bad you are correct H80N it is the voltage i've been talking about.

  8. #8
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    Thats why 035 will be MUCH better as it burns HOTTER. 3/15 and 030 AL, is not a good choice

    So with 035 you will want around 23-26 volts, and about 7 on the 30A

  9. #9

    Default

    Im going to give it a try on a test plate sometime today i'll let you guys know how I make out. Thanks for the advice

  10. #10
    Join Date
    Nov 2003
    Posts
    3,150

    Exclamation Don't Go BOOM...

    Just a cautionary note...

    you are purging the inside of the tanks with CO2 or dropping lots of dry ice inside before striking an arc on the tanks..?? right??

    Diesel or Gas... PLS be careful...
    .

    *******************************************
    The more you know, The better you know, How little you know......

    “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

    Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

    My Blue Stuff:
    Dynasty 350DX Tigrunner
    Dynasty 200DX
    Millermatic 350P w/25ft Alumapro & 30A
    Millermatic 200

    TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam..

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