TIG welding stainless pipe- 5G Fill Pass and Cap Pass (Walking The Cup)


5G Filling and Final Welding Hello. We’re gonna do pipe welding again today. We’ve filmed the fillings and final welds in 5G position. I’d appreciate it if you could press “subscribe” and “Like.” This is a pipe that was back-bead welded at the previous time. If you have any questions about back-bead welding, we would appreciate it if you could refer to the previous Today we’re going to do a 2Pass weld and then we’re going to do a final weld. First, the second weld. If you look here, the weld is narrow. So I’m going to do a little bit more welding with the narrow groove width The welding method is similar to what it used to be. The nozzle will move one step at a time, as if it were walking through the top edge of the groove. And then, in the final weld, this is how we’re going to be welded. In order to do that, in the second weld, you can widen the “groove” a little bit and create a constant width. Properly increase the weld height, it’s a little easier to weld the final. The nozzle has an internal diameter of 16mm. It’s Big Nozzle No. 10. The tungsten length is 6mm to 7mm. I’ll do the welding like this way At the start of the weld, the weld is first melted and then the weld pool is fed pool. The current used 70 amps. Welding rod is 2.4mm. When welding 2Pass, melt the unmelted part of the 1Pass weld to ensure penetration. And it melts the narrow, sloped “groove” to smooth the slope and widen the narrow “groove” a little bit. This will make it easier to weld the next weld. As a result, I think 2Pass is a basic operation for 3Pass. At this point, it is advantageous to supply a small Caution, if the amount of heat input is too high using too much current, the back-bead inside the pipe may be damaged. This is the height of the weld. Now we’re going to do a final weld. Also called “Cap Pass.” The nozzle has an internal diameter of 16mm. It’s Big Nozzle No. 10. The tungsten length is about 7 to 8 millimeters long. I’ll do a final weld. So is the final weld. When welding is started, weld pool is first made without the welding rod. And then we’re supplying the weld rods to the molten pool that’s made. The current used 70 amps. Welding rod is 2.4mm. One of the most important things about this kind of welding is the location of the head. The head position must always pass before the melt pool. There are many reasons. First of all, we have clear vision. Second, the center of gravity of the body can move in a stable. And thirdly, there are many reasons why you can make room for your right arm to move. And in order to keep your head in position as you weld it, you have to move your body little by little continuously. Of course, it’s hard to keep these things at the construction site, where many pipes and structures are mixed together. But I think it’s good to try to keep your head in position. If the width and height of the weld are adequate for 2Pass welding… When welding the final, you only need to roll the nozzle diagonally and cover both ends of the dig-out “groove.” And if you supply a weld rod with the feeling that it’s pressed on the floor rather than the feeling of supplying it, you can supply a certain amount of weld rods. And as a result, I think we can do a constant width and level height of welding. Of course, in order to do that, you need to do the basic work well when you do the two pass. The current used 70 amps. Welding rod is 2.4mm. So today we’ve been welding stainless steel pipes in 5G positions. I’ll come back to you with another story next time. There are many welding methods in the same situation. My welding method is not necessarily the answer. But it’s one of the different welding methods that can be applied in a variety of situations, so I hope it helps. I hope this video is a growing motivation for every welder and a little bit of help. Please press “Like.” If you “subscribe” and come to my channel, there’s a lot more welding videos. Thanks for watching.

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