Carbon steel pipe fitting method.
-For pipe welding training- Hello. I made a video about the carbon steel pipe ‘tack’ method. I’d appreciate it if you could press “subscribe” and “Like.” So today we’re going to do a “tack” with this short carbon steel pipe. When you ‘tack’ these short pipes, you snap two pipes together. And we often use the method of ‘tack’ by creating a gap between the two pipes. I’m going to show you two “tack” methods. This is a 3.2mm welding rod. I bend this. And put it between the two pipes. Next, you need to briefly weld the gap that’s made. Isn’t it simple? Another way is to use the angle. Place two pipes on the angle. Next, make a gap between the two pipes. When you adjust the size of the gap… Adjust the clearance using any size welding rod or steel plate. Next, 12 o’clock. 6 o’clock. 3 o’clock. Nine o’clock. It’s the usual ‘tack’ method for the four armies. When you do the first ‘tack’, make the pipes parallel like this way And you can do the first tack. This is what you see from the front. When you ‘tack’, you can melt the pipe first and then attach the weld rod to the melted pipe to make it easier to ‘tack’. It is recommended that the crater is removed from the weld area. Then you can take out the weld rods that were stuck between the pipes. This is a 2.4-millimeter welding rod. We create a gap of this size. The tack does not have to be long. However, if the ‘tack’ is strong, there is a strong advantage in thermal shrinkage when the ‘root pass’ is considered. The second tack is on the other side of the first tack. Check the alignment of the 9 o’clock and 3 o’clock before “tack.” Then, you can do the second ‘tack’. If you insert a 3.2mm weld rod between the two pipes, you can create the same gap as before. But if you want to make a wider gap, you can use a thicker iron plate or a thicker weld rod. Then you can create a wider gap. Here’s how to weld it. It’s a little easier to ‘tack’ if you use a small gas nozzle that can fit between the grooves When welding a wide gap, it is easy to weld by connecting two pipes and welding them. Similarly, it is recommended that the crater is removed from the outside of the weld area. This is a 3.2mm welding rod. The size of the gap is made up of these intervals. However, there is a disadvantage that a wide gap increases the amount of weld. And this is a 2.4-millimeter welding rod. After you do the second “tack,” you can take out the iron plates that were stuck between the pipes. It’s the inside shape of the pipe. A back-bead of this height is made. After that, you can tack 3 o’clock and 9 o’clock in the same way. Then it is finished. This directly ‘tack’ between pipes causes the gap to shrink by welding heat. I’m going to show you how to play ‘tack’ with a small thermal shrinkage. It’s a ‘tack’ method using steel plates. If you play ‘tack’ like this, you can ‘tack’ the gap so that it doesn’t shrink in size. It is recommended that the depth of penetration is not too deep when you ‘tack’ it this way. You can use this method to “tack” And this tack prevents the gap from shrinking between the pipes. When you’re welding, you can use a hammer to remove this iron plate. You can use these pliers to twist them in the direction they are welded to make it easier to pull them off. So today we’ve made a video about how to tack a carbon steel pipe. I’ll come back to you with another story next time. Please press “Like.” If you “subscribe” and come to my channel, there’s a lot more welding videos. Thanks for watching.