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  • Need a Tig recommendation

    I would like a recommendation on the amperage setting I should use to weld a pedestal for a JG2 32 tube bender?

    The base plate is 12 inches square and 1/2 inch thick.
    I am welding a 36 inch length of 2-1/2 schedule 40 pipe to the base plate.

    My equipment and set up is as follows:
    Dynasty 200 with Argon and set to DC.
    WP20 torch with gas lens and 1/8 2% Lanthanated Tungsten.
    1/8 inch ER70S filler rod

    I have the base plate and pipe mounted on my rotary positioner, so doing the weld should be easily done.

    Amp setting to use?
    How many passes should I make around the pipe?

    Thank you for comments and help.
    pg
    Last edited by piniongear; 07-08-2016, 04:35 PM.
    Dynasty 200 DX_set up on 3 phase
    Coolmate 3
    MM 251 w/ Spoolmatic 30A
    HTP 625 Micro Cut Plasma Cutter
    Victor O/A Rig
    Bridgeport Mill_3 phase (w/ Acu-Rite 4 axis DRO)
    10 inch South Bend Lathe_3 phase
    Baldor Double Cup Tool Grinder_3 phase
    Baldor 10 inch Buffer
    Rockwell 12 inch Disc Sander
    Cyclone 2ft X 3ft Bead Blast Cabinet
    Quincy 325 2stg- Air Compressor_3 phase
    Graymills Built-in Parts Washer
    Rockwell/Delta Planer, HD Shaper, Uni-Saw etc.


  • #2
    Punch it at full 200 amps. Adjust with your foot control or positioner speed as required.

    I would make sure the throat of the weld is at least as deep as the thickness of the pipe wall.
    Nothing welded, Nothing gained

    Miller Dynasty700DX
    3 ea. Miller Dynasty350DX
    Miller Dynasty200DX
    ThermalArc 400 GTSW
    MillerMatic350P
    MillerMatic200 with spoolgun
    MKCobraMig260
    Lincoln SP-170T
    Linde UCC305 (sold 2011)
    Hypertherm 1250
    Hypertherm 800
    PlasmaCam CNC cutter
    Fadal Toolroom CNC Mill
    SiberHegner CNC Mill
    2 ea. Bridgeport
    LeBlond 15" Lathe
    Haberle 18" Cold Saw
    Doringer 14" Cold Saw
    6 foot x 12 foot Mojave granite

    Comment


    • #3
      I tend to set the machine higher and modulate the heat with the foot pedal...

      soo... I would set the Dyn for 200 amps and go from there.. depending on positioner speed and your personal welding style....

      it might be an old fahioned approach... but works for me....
      .

      *******************************************
      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 w/ PowerMax-1000

      Comment


      • #4
        Hah.... Terry.... Ya beat me to it.....!!!
        .

        *******************************************
        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 w/ PowerMax-1000

        Comment


        • #5
          Dang Heiti! Where were you born? Maybe we are related?
          Nothing welded, Nothing gained

          Miller Dynasty700DX
          3 ea. Miller Dynasty350DX
          Miller Dynasty200DX
          ThermalArc 400 GTSW
          MillerMatic350P
          MillerMatic200 with spoolgun
          MKCobraMig260
          Lincoln SP-170T
          Linde UCC305 (sold 2011)
          Hypertherm 1250
          Hypertherm 800
          PlasmaCam CNC cutter
          Fadal Toolroom CNC Mill
          SiberHegner CNC Mill
          2 ea. Bridgeport
          LeBlond 15" Lathe
          Haberle 18" Cold Saw
          Doringer 14" Cold Saw
          6 foot x 12 foot Mojave granite

          Comment


          • #6
            Originally posted by shovelon View Post
            Dang Heiti! Where were you born? Maybe we are related?
            ...... Maybe.... Sick minds think alike............

            Besides.... they put that "Foot Feed" on the darned thing.... might as well use it..............
            .

            *******************************************
            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 w/ PowerMax-1000

            Comment


            • #7
              Yup, with a pipe wall thickness of 200-thou and a baseplate thickness of 500-thou, you're gonna need all 200A. Number of passes would depend on what size fillet you are aiming for.
              HTP Invertig221 D.V. Water-cooled
              HTP Pro Pulse 300 MIG
              HTP Pro Pulse 200 MIG x2
              HTP Pro Pulse 220 MTS
              HTP Inverarc 200 TLP water cooled
              HTP Microcut 875SC

              Comment


              • #8
                Or you could pop in a stinger and use some electrodes...Bob
                Bob Wright

                Comment


                • #9
                  Originally posted by aametalmaster View Post
                  Or you could pop in a stinger and use some electrodes...Bob
                  That's exactly what I did for my bender stand. No need to set up the tig and play with settings. I used 1/4" flat bar to make the "tube" (because I already had the flat bar) with my Millermatic 211, and welded to a 1/2" thick base with stick. Popped in some 1/8" 5P+ 6010 on the tig, laid a bead all around. Wasn't satisfied with the fillet size, so I went over it with 1/8" 7018 excalibur. that reminds me, I should paint it before it gathers any more surface rust. Been humid here in south Texas lately.
                  HTP Invertig221 D.V. Water-cooled
                  HTP Pro Pulse 300 MIG
                  HTP Pro Pulse 200 MIG x2
                  HTP Pro Pulse 220 MTS
                  HTP Inverarc 200 TLP water cooled
                  HTP Microcut 875SC

                  Comment


                  • #10
                    I would run this one stick. you will spend a lot of time, rod & gas and put some serious heat into the piece if you TIG it. Stick will give you a deeper penetration (just make sure your dig setting is 100%) and will be a lot faster and less consumables.

                    Unless you can't stick, in that case. TIG away at 200 A and just balance the pedal as you go. Gonna take some heat though, clamp it well.
                    if there's a welder, there's a way

                    Comment


                    • #11
                      I would still TIG it....

                      you can keep heat input to reasonable levels..... by keeping your amps high and moving fast...

                      you will only cook it by having amps too low and moving too slowly

                      So.......... pour the coal to it and move like the wind...

                      Just my 2cnts worth
                      Last edited by H80N; 07-09-2016, 03:34 PM.
                      .

                      *******************************************
                      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 w/ PowerMax-1000

                      Comment


                      • #12
                        Thanks for all of your suggestions and help guys!
                        I started with the first pass set at 191 amps. Held the pedal all the way down for the entire pass.
                        Let it cool off and then made a second pass with the amps set at 200. This one I backed off the pedal a little.
                        Finished with a third pass at 200 amps. Now I have a nice thick bead around the pipe.and it looks pretty good.

                        At the other end of the pipe I had to weld another 1/2 inch base plate for the bender to bolt to.
                        This piece measures 3-1/2 inches x 8-1/4 inches, having two 3/4 inch holes drilled in it.
                        I inverted the pedestal and then welded the top plate to the pipe with my Miller 252 Mig machine, and of course that went much faster, laying two passes around it.

                        I did get some warping on the base plate because of the heat input. That surprised me but Oscar (I believe it was) cautioned me about the heat.
                        Standing free on the floor with a level on the top plate shows the pedestal to be almost perfectly vertical. The small amount of rocking can be cured by using washers under the plate or drilling and tapping (4) holes and using (4) 1/2-13 bolts to eliminate the slight rock.
                        Thanks again fellows for your help.
                        I had no ideal on what to set the amperage at, and was very surprised to hear the correct setting was at my max available amperage..
                        pg.
                        Dynasty 200 DX_set up on 3 phase
                        Coolmate 3
                        MM 251 w/ Spoolmatic 30A
                        HTP 625 Micro Cut Plasma Cutter
                        Victor O/A Rig
                        Bridgeport Mill_3 phase (w/ Acu-Rite 4 axis DRO)
                        10 inch South Bend Lathe_3 phase
                        Baldor Double Cup Tool Grinder_3 phase
                        Baldor 10 inch Buffer
                        Rockwell 12 inch Disc Sander
                        Cyclone 2ft X 3ft Bead Blast Cabinet
                        Quincy 325 2stg- Air Compressor_3 phase
                        Graymills Built-in Parts Washer
                        Rockwell/Delta Planer, HD Shaper, Uni-Saw etc.

                        Comment


                        • #13
                          Originally posted by piniongear View Post
                          Thanks for all of your suggestions and help guys!
                          I started with the first pass set at 191 amps. Held the pedal all the way down for the entire pass.
                          Let it cool off and then made a second pass with the amps set at 200. This one I backed off the pedal a little.
                          Finished with a third pass at 200 amps. Now I have a nice thick bead around the pipe.and it looks pretty good.

                          At the other end of the pipe I had to weld another 1/2 inch base plate for the bender to bolt to.
                          This piece measures 3-1/2 inches x 8-1/4 inches, having two 3/4 inch holes drilled in it.
                          I inverted the pedestal and then welded the top plate to the pipe with my Miller 252 Mig machine, and of course that went much faster, laying two passes around it.

                          I did get some warping on the base plate because of the heat input. That surprised me but Oscar (I believe it was) cautioned me about the heat.
                          Standing free on the floor with a level on the top plate shows the pedestal to be almost perfectly vertical. The small amount of rocking can be cured by using washers under the plate or drilling and tapping (4) holes and using (4) 1/2-13 bolts to eliminate the slight rock.
                          Thanks again fellows for your help.
                          I had no ideal on what to set the amperage at, and was very surprised to hear the correct setting was at my max available amperage..
                          pg.
                          Glad you got it done... and you are happy.........

                          share some pics with us....??
                          Last edited by H80N; 07-09-2016, 05:29 PM.
                          .

                          *******************************************
                          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 w/ PowerMax-1000

                          Comment


                          • #14
                            Here are 3 pics of the finished pedestal
                            Dynasty 200 DX_set up on 3 phase
                            Coolmate 3
                            MM 251 w/ Spoolmatic 30A
                            HTP 625 Micro Cut Plasma Cutter
                            Victor O/A Rig
                            Bridgeport Mill_3 phase (w/ Acu-Rite 4 axis DRO)
                            10 inch South Bend Lathe_3 phase
                            Baldor Double Cup Tool Grinder_3 phase
                            Baldor 10 inch Buffer
                            Rockwell 12 inch Disc Sander
                            Cyclone 2ft X 3ft Bead Blast Cabinet
                            Quincy 325 2stg- Air Compressor_3 phase
                            Graymills Built-in Parts Washer
                            Rockwell/Delta Planer, HD Shaper, Uni-Saw etc.

                            Comment


                            • #15
                              I did get some warping on the base plate because of the heat input. That surprised me but Oscar (I believe it was) cautioned me about the heat.
                              Standing free on the floor with a level on the top plate shows the pedestal to be almost perfectly vertical. The small amount of rocking can be cured by using washers under the plate or drilling and tapping (4) holes and using (4) 1/2-13 bolts to eliminate the slight rock.
                              Thanks again fellows for your help.
                              I had no ideal on what to set the amperage at, and was very surprised to hear the correct setting was at my max available amperage..
                              pg.[/QUOTE]

                              Well, There ya go. It's Oliver by the way, not Oscar. A joke goes around my work place with me being called Oscar because I originally got very annoyed when people called me that, so now a bunch of people call me Oscar at times because of it. Funny that you accidentally happened to do the same.

                              I have warped 3/8" flat bar by running stick but that was due to the amount of passes I did in a short period of time at max amps for an 1/8" rod and once its bent, it will never be perfectly flat.

                              Anyways, good job then! Share some pictures, we are always curious to see what it looks like when its done.
                              if there's a welder, there's a way

                              Comment

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