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MIG Weld Beads ?

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  • #16
    Rocky, I drove by where they was doing that one day and seen how they was doin it.


    • #17
      It looks like to me that Dan layed his out with a ruler. They look perfect to me. Wish I could get somewhere close to that.



      • #18
        What is the rule of thumb for torch angle. Drag on thin and Push on thick??



        • #19
          Originally posted by Trap Doctor
          What is the rule of thumb for torch angle. Drag on thin and Push on thick??

          Jim in almost all types of welding 15° is the can vary. Too much angle will cause the weld to undercut on the low side and overlap on the high side. Cary brings out an excellent point...once you can see it being done properly, then you can do it.
          Where I worked, we had 30 or so weldors...some good, some mediocre...but quite often I would go and stand behind one of the good guys, and see how he did it. Most guys don't mind. Some do, so ask, first.
          Arcin' and Sparkin', Rocky D

          "Experience is the name we give our mistakes"


          • #20
            Drag will give you more root penetration therfore the possibility of burn through on thin stuff is greater. You can push for anything really and I prefer this as it gives you a better view of the joint in the direction of travel.



            • #21

              Originally posted by Rocky D
              This question comes up quite often...which is better single pass or weave?

              My technique is a circular motion which produces a stack of dimes, when you look at it. It must be undrstood that a MIG weld only penetrates where the arc sweeps over new base metal...therefore the circular technique starts with a sweep forward to catch new metal, and then back to fill. The straight line method while looks nice, is easy to have the weld metal pile up on you and get no penetration. You have to really know what you are looking at to be sure in that technique. The arc must be at the very front of the puddle.

              Hope this helps
              VERY, VERY,NICE, Except my shop says "WATCH THE PRETTY BLUE LIGHT" Jack


              • #22
                Originally posted by pjseaman
                Dan I oscillate just because my hands shake too bad to call it straight stringer beads. In other words my hand shakes so I call it oscillation!!! You should see me tig{hilarious}, I hold on to the table to stop the world from moving so much, just kiddin.
                I am relieved that I am not the only one , I sometimes try to use a big, honkin, C-clamp so I have a guide to rest my hand on , is that cheatin? And speaking of Tig, I just tried some last night after laying off for about 3-4 weeks, you guessed it, forgot everything I learned already
                Regards, George

                Hobart Handler 210 w/DP3035 - Great 240V small Mig
                Hobart Handler 140 - Great 120V Mig
                Hobart Handler EZ125 - IMO the best 120V Flux Core only machine

                Miller Dynasty 200DX with cooler of my design, works for me
                Miller Spectrum 375 - Nice Cutter


                • #23
                  Andy pushes, I tend to pull and its primarily because my background is stick welding. I bet most TIG guys would push.