Comparison of tungsten angles and welding Hello. Today… I made a video about “Comparison of Tungsten angle and Welding.” I’d appreciate it if you could press “subscribe” and “like.” Some people are curious about how to polish tungsten, so I made a video. If you’re looking for a book on welding or any material on welding… You can easily find the “Arc Difference” and the “Differences in Penetration” depending on the tungsten angle. And when they’re actually welded, I’m going to experiment with the connection. Let’s start with “spot welding.” Welding setup is set to “spot welding”. The current is 250 amps. Tungsten is about 10mm long. If we set it up like this, we can weld it… I thought I could see the momentary difference between the high currents and the arcs, so I set it up like this. If you look over there, it says 15 ?, 30 ?, 60 ?. Those numbers are just for comparing tungsten angles to each other. It is not the exact angle, so please refer to it. So we tested three different types of tungsten with a spot weld. If you compare these three welds, there’s probably a fine difference between the size of the arc and the depth of the penetration. But when you look at the welds with your eyes, they’re almost indistinguishable. As a result… it doesn’t make much difference with “spot welding,” does it? Now, let’s compare the differences when we do a “straight weld” using a low current. I’ve actually done a short weld with a low current that feels like it’s actually going to be a short weld. We didn’t put this on camera either, but the arc has a slightly different shape. But when you look at the results, there’s a similar outcome that’s hard to tell. If you look over there, the size of the weld is slightly different from the size of the 15 ? and the 60 ?. But because I adjusted the speed with my hands, I don’t think the difference in the angle is necessarily the only difference. So I’m going to do an experiment on the turntable to make it more fair. In this experiment, the length and current of tungsten and the speed of the turntable are set to the same… I’m going to experiment with different angles of tungsten. We’ll start with “60 ? Tungsten.” Again, numbers are written to separate the angles. It’s not exactly the angle. Please refer to the benefits. I’ll do the experiment under these conditions. That would be a fairer review, wouldn’t it? The current is 120 amps. Tungsten is about 7mm long. The nozzle has an internal diameter of 16mm. No weld rods. Welded using “weld without a welding rod.” As with the “free-charging welding,” the tip of the tungsten was welded as close as possible to the weld pool. This is the result. And I prepared the same size for the pipe. The length and thickness of the pipe are all in the same size. The pipe cut surface was also machined with a fanometer. Then all three conditions will be the same, right? This time, we’ll test it at 30 degrees. Tungsten is about 7mm long. I’ll test it with the same conditions as before. So here’s what we’re going to do: compare it to the previous welds. Based on the color of the weld, there seems to be a slight difference in the heat input. This time, I will test it at 15 ? for the last time. Again, tungsten is about 7mm long. The current is 120 amps. And the rest of the conditions were tested with the same conditions as before. Again, compared with only the color of the weld, there seems to be a slight difference in the heat input. If you’re welding on the same condition, the difference in heat input means that the depth of penetration is also different. Let’s compare the three arcs. The camera was stupid, so I couldn’t get the exact shape of the arc in the video. But the arc is slightly different in shape. And compare the arc in “Crater Current.” So here’s the result. If you compare the colours of the welds… Based on the color of the weld, the heat level… There’s a very small difference. So today we’re going to test how these different tungsten angles actually relate to welding, and what’s the difference? Obviously, depending on the tungsten angle, the arc shape is slightly different. But if you look at the differences in today’s results, you can see… There’s a very small difference when you look at the weld results with your eyes only. But there’s a similar outcome that’s hard to tell. And I think it’s very close to the tip of the tungsten and the melting pool when you’re welding on a “weld without a welding rod.” So I don’t think there’s much difference between the welds. As you can see, “Width of welds” is pretty much the same. In today’s experiment, we did an experiment on how tungsten angles actually differ from welds and how they relate. As you can see in the video, there’s no big difference. But I think it was a very interesting experiment. And if you have a chance later, if you have a chance to do something like “back bead welding,” “walking the Cup,” “fillet welding,” “freehand welding,” it’s going to be a very interesting experiment. Now, if you could sum up what we’re talking about today… Depending on the angle of tungsten, the arc varies in shape. But the difference is very small. And judging by the color of the weld, the heat level… high angle tungsten You can see that the heat in “60 ? Tungsten” is slightly higher. But it’s also very small. And in welding, where the tip of tungsten, such as “spot welding” or “weld without filler,” is very close to the melting pool… I can’t find much difference. So in the future, we’re going to experiment with what’s different about “back bead welding,” “walking the Cup,” fillet welding, freehand welding. So you can learn a little more about how to polish tungsten in some situations. I didn’t find this cool-down result today, but I did some interesting experiments. I’ll come back with a more interesting video next time. Thanks for watching.