Running on a positive current could result in a lot of spatter that you’ll need to clean up. While you certainly can still weld on the electrode positive setting, you’ll get a cleaner weld if you’re set at electrode negative.Įvery welding machine will be different, but look into how you can swap terminals so that the negative terminal runs to the electrode on your MIG gun.
#Flux core welder how to
Use DCEN, Electrode Negative with Flux Core WireĮach package of flux core wire will have specifications about how to use it best, but one common setting change is that flux core MIG welding must be done with DCEN, or electrode negative. The safety and longevity of your weld depends on getting solid penetration and fusion with the metal work piece, and a flux core wire can offer a slight edge sometimes.
A flux core wire will give you more penetration into the weld joint if your metal is thick or your welder simply can’t crank out enough amperage for a particular project. Flux Core Wire Offers Advantagesīesides the simplicity of MIG welding with flux core wire, it also offers a number of advantages if you’re pushing your welder to the height of its power limit. If you need a clean weld, consider a solid core wire and a shielding gas set up that will minimize impurities in the weld puddle. Set aside enough time for clean up when you get to work with a flux core MIG wire. However, you’ll need to spend more time cleaning off the metal when you’re done welding if you want the weld to look its best. That saves you from setting up the gas rig before you strike your arc. However, if you want to use flux core wire for your next MIG project, you need to keep a few things in mind: Prepare to Clean Your Weldsįlux core MIG wires protect the weld while you burn the electrode down. If you need to MIG weld outside or you can’t control the environment where you’re working, you’ll do well to keep some flux core MIG wire around for the odd project. That’s an extra cost for the gas, and not to mention that you’ll have another setting to keep track of while you work.įlux core MIG welding is also more versatile and portable. When you enter shielding gas into the mix, you have to make sure you have enough gas flowing into the weld joint in order to shield the metal from impurities. MIG welding with fluxed core wire is significantly easier to set up than MIG welding with shielding gas.
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