![]() ![]() If you are welding a self-shielded flux core, it might be tempting to leave that little bit of slag that just won’t come off. With dual shield, the slag comes off easily. But don’t just clean it off at the beginning get all the slag off in between passes. ![]() If it’s wet, dry it off with a torch or quickly wipe it down. If the material is rusty, you should grind off the rusty part. But in general, you should prep your material to some degree. Try to dial in your settings to where you can move at a reasonable pace.įlux core can handle some mill scale and dust in the joint. Another issue with moving too slow is that you are spending more time than needed with a hot arc on the material, putting unnecessary heat into it and causing distortion. On the flip side, if you move too slowly, you can also cause an undercut. Moving too quickly can cause undercut and lack of fusion. If you move too quickly, you might not let the weld fill in enough. Then you can move at more or less the same pace. There are other variables you need to consider. If you are trying to achieve a smaller size weld, don’t just move the gun faster. But this not only creates opportunities to trap slag, but the weld can also be too concave that is why a slight drag is preferred. The temptation to push comes in because this creates a flatter weld appearance. Unless otherwise specified, you want a generally flat weld appearance. Any more than that and the throat of your weld (the distance from the joint to the surface of the weld) will start to be too convex. ![]() But you also don’t want to drag too much.Īnywhere between 15°–30° is an okay angle to drag the gun. Since there is flux and slag that results, you have to drag to prevent the slag from going underneath the weld. The preferred travel angle for FCAW is a slight drag. You also won’t get as much penetration into the joint. If you weld them with DC+, you will produce considerable spatter since the wire can’t take that amount of heat. However, some wires, especially those that are self-shielded, are intended to be used with DC- which means direct current electrode negative. This means that 2/3 of the heat in the arc will be directed toward the wire. When welding dual shield flux core (flux-cored wire with shielding gas), most wires are DC+, which is direct current electrode positive. Our 7 Tips & Tricks for Beginner Flux Core Welding 1. Here are some tips to help you get started. Nevertheless, there will still be a little bit of a learning curve. While flux core is a more unorthodox way of learning to weld (stick welding is usually learned first), you can learn a great deal about the principles of welding. It’s a lot easier than starting to learn stick, for example. The equipment is pretty user-friendly, and you can strike an arc with the pull of a trigger. It’s not a bad choice, especially for those just starting out. So, you’ve decided to take up flux core welding. 0 Flux Core Welding for Beginners: 7 Tips & Tricks to Get You Started ![]()
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