Spatter does not necessarily affect weld quality, but it may require additional grinding, polishing and finishing to remove it before painting or other such surface preparations, so solid wire is more commonly used in these situations. Desired weld cleanliness – As a rule, solid MIG welding wires used with shielding gases produce a cleaner weld with much less spatter compared to flux-cored wire.Here are a few things to keep in mind when you pick MIG welding wire. Wondering what you should think about when you choose MIG welding wire? Neither type is superior compared to the other – rather, the right choice depends on your situation and preferences. Considerations When Choosing MIG Welding Wire The welding gun delivers a steady stream of gas from a container, which surrounds the electrode and weld area to prevent oxidation and defects in the weld.ĭepending on the application, both kinds of MIG welding wire (solid and flux-core) can be made from a variety of materials including aluminum, stainless steel, copper, and silver, to name just a few. The most common shielding gas is 75% argon and 25% carbon dioxide. This means they must be used with a shielding gas. In contrast, solid wire electrodes are exactly what they sound like – large reels of solid metal wire that do not contain any flux. This means that no shielding gas is required for this type of wire – though in some cases, shielding gas may be used alongside flux-core wire for even more protection. When the wire melts and reacts with the welding arc, this forms a gas that protects the weld from oxygen, which can cause defects in the weld. There are two primary types of MIG welding wire – flux-core and solid MIG welding wire.įlux-core wire is a metal electrode that contains a “flux compound” inside the electrode. There are a lot of different types of MIG welding wire, and in this article, we’ll explain some of the differences between them, what to consider when choosing welding wire, and the importance of choosing high-quality wire. MIG welding wire consists of a spooled-up electrode that’s fed through a MIG welding “gun” and is heated to melt metal and join workpieces together.
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