Welding
Welding
Welding (pronunciation: /ˈwɛldɪŋ/) is a fabrication process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool, causing fusion. Welding is distinct from lower temperature metal-joining techniques such as brazing and soldering, which do not melt the base metal.
Etymology
The term "welding" is derived from the Old English "weald", meaning "a joining of metal". It was first used in the context of metalwork in the early 19th century.
Related Terms
- Arc Welding: 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.
- MIG Welding: Metal Inert Gas (MIG) welding, also known as Gas Metal Arc Welding (GMAW), is a welding process in which an electric arc forms between a consumable wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to melt and join.
- TIG Welding: Tungsten Inert Gas (TIG) welding, also known as Gas Tungsten Arc Welding (GTAW), is a process that uses a non-consumable tungsten electrode to produce the weld.
- Flux-Cored Arc Welding: It is a semi-automatic or automatic arc welding process that uses a continuously-fed consumable electrode containing a flux and a constant-voltage or, less commonly, a constant-current welding power supply.
- Submerged Arc Welding: It is a common arc welding process that requires a continuously fed consumable solid or tubular (metal cored) electrode.
See Also
External links
- Medical encyclopedia article on Welding
- Wikipedia's article - Welding
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