Aula De Solda Tig Na Pos. 5g Em Tubo De Aço Inox. - Tutorial stainless steel pipe,in 5g position

Tutorial "Walk the Cup Welder: Messias Carvalho Camera : Giulio Carvalho Hello everybody! as requested by some users of youtube. Asked me by email or own You Tube channel. That I show. Welding, Technique "Walk-the-cup" Here in Brazil we call, "Bocal colado" and countries with English language call "Walk-the-cup". Ok! So here I'll be showing these techniques. Let's go! I turn down the trigger. Wrap the cable in the arm and the position I hold is this. It comes between the third finger here. so it's easier for me press the trigger and release. my machine has 4 times the control where I press the trigger and released. the arc remains open and at the end to stop the arc, again and I press and release, and the electric arc is stopped. For you to understand the movement of walk the cup. it looks like I needed to move this cylinder cap here. Come up front here but, without lift it. So! I will do it. I'm doing, this cylinder cap walk. This is what I do with the ceramic nozzle during the welding. the movement of this rod is this. look. I use these two fingers to move the rod. For welding of stainless steel pipes, I need to put a purge gas. An inert gas inside the pipe, to protect the weld bead from contamination by atmospheric air. Then put it here, using a quick coupler.Are Placed. The reason for placing the purge gas inside the pipe. Note this weld, that externally it until has a good looks. But inside as was not used a purge gas, the weld bead was oxidized. And this weld bead will have no corrosion resistance. Here everybody, notice that I put the rod and dip it a little in the weld pool. To achieve penetration. and at the same time, taking care not let it out the front of the nozzle. I'll stop now, I'll throw the down slope. Note that the amperage is decreasing. The arc stop, and I remain here, during the time of post flow. The post flow stop, Now I take the torch and the weld bead ended with no contamination. Now I got to the end so, walk 10 mm, over the weld bead that is here. I press the trigger, the down slope start. the amperage is decreasing, I keep walking. to have no fault in the weld bead, or that little hole in the end. I wait the postflow timer be stopped. ready finished, I remove the torch, then the weld bead finished, without that little hole in the end, we usually get here Also, when use the torch with valve is forced move to break the arc. then it becomes contaminated, the end of weld bead, in this case here, note that was clear. here is the underside, the underside of the weld bead. I used a Pickling Gel. let's see how are the appearance of the weld. exactly at this point here, was the beginning, under the weld,start there and came here. here a little narrowest part of the weld bead, but is within of the standards. This narrowest must be ? 50% widest to be acceptable. Thank you for watching.