Today it remains an important process for the fabrication of steel structures and vehicles. First developed in the late part of the 19th century, arc welding became commercially important in shipbuilding during the Second World War. Arc welding processes may be manual, semi-automatic, or fully automated. The welding area is usually protected by some type of shielding gas (e.g. Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used. It is a type of welding that uses a welding power supply to create an electric arc between a metal stick (" electrode") and the base material to melt the metals at the point of contact. Gas metal arc welding Man welding a metal structure in a newly constructed house in Bengaluru, IndiaĪrc welding is a welding process that is used to join metal to metal by using electricity to create enough heat to melt metal, and the melted metals, when cool, result in a binding of the metals. Process used to fuse metal by using heat from an electrical arc
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