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Calling Blackwolf!!!!!!

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  • Calling Blackwolf!!!!!!

    My customer finally got the trailer to my shop today,starting cutting out bent crossmembers etc.,What temperature did you preheat to and did you postheat? I have a roll of Pinacle, ER90S-B3 hard wire on hand I mite try that out on one crossmember and let it cool down and see if it cracks out past the weld zone,if it does I prbaly go with 110,000 stick and cross my fingers. Thanks for the info!
    ;
    /22x45 concrete slab with 2 overhead cranes(trolley style with electric hoist, huge shade tree to weld under
    33x33 enclosed shop when its to cold or windy outside
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  • #2
    I guess I never really thought about it, always welded cross members in with 7018, never had one come loose or frame crack around it, never bothered to pre-heat either. Maybe just been lucky?

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    • #3
      Me neither. 500 trailers and just used 7014 or 70S6 and a Miller mig...Bob
      Bob Wright

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      • #4
        Evidentally we are coming into this a bit late

        www.facebook.com/outbackaluminumwelding
        Miller Dynasty 700...OH YEA BABY!!
        MM 350P...PULSE SPRAYIN' MONSTER
        Miller Dynasty 280 with AC independent expansion card
        Miller Dynasty 200 DX "Blue Lightning"

        Miller Bobcat 225 NT (what I began my present Biz with!)
        Miller 30-A Spoolgun
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        Miller 225 Thunderbolt (my first machine bought new 1980)
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        • #5
          Your talking about a lowboy 50 ton trailer, right? Do the crossmembers slide through the main rails or are they just welded to it? Can you call the manufacturer, maybe a dealer or is it to old or unidentifiable.
          Last edited by MMW; 03-24-2010, 07:37 PM.
          MM250
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          Arco roto-phase model M
          Vectrax 7x12 band saw
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          RCCS-14

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          • #6
            I think it was determined in another thread that he is dealing with T-1.
            Caution!
            These are "my" views based only on “my” experiences in “my” little bitty world.

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            • #7
              Any time I have dealt with T1, I used 11018 with preheat and slow cool. No problems ever.
              Jeff

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              • #8
                t1.....

                Never had much of a cracking probelm with t1, only when welding say a 1inch cutting edge to the edge of a bucket which was 1/4 or 3/8. I hightly doubt the entire trailer is made of t1, maybe the beams, but the crossmembers are likely mild steel.
                Kevin
                Lincoln ranger 305g x2
                Ln25
                Miller spectrum 625
                Miller 30a spoolgun
                Wc115a
                Lincoln 210mp
                F550 imt service truck

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                • #9
                  The first thread is here: http://www.millerwelds.com/resources...ad.php?t=21210

                  So now you know the beginning of the story.
                  at home:
                  2012 325 Trailblazer EFI with Excel power
                  2007 302 Trailblazer with the Robin SOLD
                  2008 Suitcase 12RC
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                  2008 Thermal Dynamics Cutmaster 52
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                  at work:
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                  Retired:Shopmaster 300 with a HF-251

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