Learn the basics of welding and more
Arc welding is a fabrication process that uses an electric arc, which is formed between the electrode or filler wire and the workpiece to join the metals being welded. The source of heat is produced by a power source. When welding, a filler metal is usually needed. Two types of filler metals commonly used in arc welding are welding rods and electrodes.
Today, there are various arc welding processes that have their own applications. The most common types of arc welding are stick welding (MMA), MIG/MAG welding (GMAW), and TIG welding (GTAW). Arc welding processes may be manual, semi-automatic, mechanized, or automated.