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Locomotive cylinders welded by quasi-arc process at Hillside Engineering in New Zealand on 16 June 1926. The Quasi-Arc Company was a provider of arc welding equipment and consumables. The company was founded around 1911 by William Lawes Cole, Arthur P. Strohmenger and C. H. Champness. Its head office was in Grosvenor Gardens, London.
Arc welding power supplies can deliver either direct (DC) or alternating (AC) current to the work, while consumable or non-consumable electrodes are used. The welding area is usually protected by some type of shielding gas (e.g. an inert gas), vapor, or slag. Arc welding processes may be manual, semi-automatic, or fully automated.
Plasma arc welding is an arc welding process wherein coalescence is produced by the heat obtained from a constricted arc setup between a tungsten/alloy tungsten electrode and the water-cooled (constricting) nozzle (non-transferred arc) or between a tungsten/alloy tungsten electrode and the job (transferred arc). The process employs two inert ...
The Boeing 737 Next Generation, commonly abbreviated as 737NG, or 737 Next Gen, is a twin-engine narrow-body aircraft produced by Boeing Commercial Airplanes.Launched in 1993 as the third generation derivative of the Boeing 737, it has been produced since 1997.