Welding encompasses a wide range of techniques that are used to fuse two or more metal parts. Metal Inert Gas welding, or MIG welding, is one of the most common and versatile welding methods, offering clean, reliable welds on a wide range of metals.
At FZE Manufacturing Solutions, we are an industry-leading provider of full-service manufacturing and machining services, including a wide range of welding services for metal components. With our MIG welding capabilities, we can meet the requirements of any aluminum or steel welding project. From contract jobs to production runs for small to medium-sized parts, we have the experience and expertise to meet the needs of various industries, including agriculture, hydraulics, oil & gas, and more.
The MIG welding process is one of the simplest, though its results are no less impressive than more complicated weld techniques. To perform MIG welding, technicians use a welding gun with a wire feed unit and an electrode wire. A dedicated MIG welding machine typically supplies the feed wire, shielding gas, and power to expedite the process.
An electrical arc between the wire electrode and the workpiece serves as the heat source, melting both the electrode and the metal surface into a weld pool. A gas nozzle pumps a combination of argon and oxygen into the workspace, forming the arc plasma and shielding the entire process from the surrounding air.
As the welder moves the welding gun along a joint, the arc melts the adjacent surfaces together into a weld pool, with the consumable electrode providing filler metal. Depending on the project, the welder may choose from several metal transfer methods.
When working with a low current, the welder often dips the wire directly into the weld pool to transfer the filler metal. Alternatively, they might apply careful pulses of electricity to detach metal droplets into the weld pool. At higher voltages, the metal is usually transferred as a series of small droplets or as a controlled spray.
MIG welding is compatible with almost any metal, and it is a common choice for mild steel and aluminum fabrication. Other benefits include:
Tungsten Inert Gas (TIG) welding is another common welding technique, and it is similar to MIG in many respects. The primary difference is that TIG welding uses a non-consumable tungsten electrode, which may be combined with a consumable filler rod to create a larger weld bead. As in MIG welding, the electrical arc forms between the tip of the electrode and the workpiece, creating a weld pool that is shielded with an inert gas (typically 100% argon, in the case of TIG).
If using filler, the operator pulses the rod into the weld pool to build up the weld bead.
TIG welding is known for creating precise, high-quality welds with an attractive finish. However, being a manual process, TIG is much slower than MIG, even for skilled technicians. TIG welding is also less effective when working with larger or thicker sheet metals. In these cases, MIG is typically the faster and more effective option.
Although MIG and TIG are among the most popular welding techniques, many other methods exist. Your metal fabrication team will guide you toward the most effective option for your project.