When flux-cored welding, you face the same “air” contamination problem. That’s because it shields the weld puddle from the gasses in the air, which can react with your hot weld and cause defects. It’s very important for a successful MIG weld. This gas is fed to the torch along with the wire. The most obvious difference, the MIG process uses a tank of gas. There are more differences but let’s break these down below. The self-shielding flux-cored wire provides the shielding gas when burned. This also makes flux-core more suited to welding in windy conditions. The main difference between flux-core and MIG welding is that flux-core welding does not require a shielding gas which makes it more portable. Those who looked carefully at the diagrams of both processes will notice they are quite similar. The basic setup for gas metal arc welding (“GMAW) or metal inert gas (“MIG”) welding is shown below. Related read: Arc Welding Explained: What is it? & How Does it Work?Īlso, both wires can weld aluminum, steel, and stainless steel, making both types versatile, although in some cases, one will be preferable, as we will cover in the next section. That’s because the process of using a consumable wire electrode is very similar for both types of wire, except for a significant difference we will discuss in a bit. While you will find dedicated MIG and flux-cored welders, many MIG units can weld using both MIG and flux-cored wire. So, both wires are vital as they carry current, support the welding arc, and supply the filler material for your weld. The wire electrode is consumed during the weld, hence the need to continuously feed wire to the torch. The wire acts as an electrode with both types of wire. This can reduce the need to constantly replace your consumable electrode, which you need to do when stick welding. MIG Welding – The SimilaritiesĪn obvious similarity, both flux-cored and MIG welding involves feeding a spool of wire automatically to the welding torch. Gas tank makes less portable than flux-coredįlux-Core vs.Wind blows away shielding gas, even light breezes can be a problem.More expensive when gas and other costs are added to the wire cost.A bit harder to set up for a weld (need to set gas flow rate).
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