Metal Inert Gas (MIG) welding is a welding process that utilizes a wire-fed electrode and an inert gas to create a strong bond between two metal pieces. Several types of MIG welding processes are available, each with unique characteristics and benefits from the best MIG welders. Here, we will discuss the most common types of MIG welding processes.
Short Circuit Transfer
Short Circuit Transfer (SCT) is the most commonly used MIG welding process. It involves creating a short circuit between the welding wire and the base metal, which causes the wire to melt and form a little droplet. As the droplet falls onto the base metal, it creates a small arc, melting the base metal and creating a weld pool. SCT is ideal for welding thin materials and produces a smooth and consistent weld.
Globular Transfer (GTAW) is a type of MIG welding involving a larger diameter electrode wire and a higher voltage. This results in larger droplets of metal getting transferred to the weld pool. GTAW is ideal for welding thicker materials and produces a stronger weld than SCT.
Spray Transfer (ST) is a type of MIG welding using a high voltage and a high wire feed speed to create a fine spray of metal droplets. ST is ideal for welding thicker materials and produces a strong and consistent weld. This type of MIG welding gets commonly used in industrial applications.
Pulsed MIG is a type of MIG welding using a low current to heat the metal and a high current to transfer the metal to the weld pool. The best MIG welders result in a consistent and precise weld. Pulsed MIG is ideal for welding thin materials and produces less heat, reducing the risk of warping or distortion.
Dual Shielded MIG
Dual Shielded MIG is a type of MIG welding using a flux-cored wire and an external shielding gas. This process is ideal for welding thick materials and produces a strong and durable weld. Dual Shielded MIG gets used in industrial applications, such as shipbuilding and construction.