Carbon arc welding


Carbon arc welding

Carbon Arc Welding (CAW) is a process which produces coalescence of metals by heating them with an arc between a nonconsumable carbon (graphite) electrode and the work-piece. It was the first arc-welding process ever developed but is not used for many applications today, having been replaced by twin carbon arc welding and other variations. The purpose of arc welding is to form a bond between separate metals. In carbon arc welding a carbon electrode is used to produce an electric arc between the electrode and the materials being bonded. This arc produces extreme temperatures in excess of 3,000°C. At this temperature the separate metals form a bond and become welded together.

Development

CAW could not have been created if not for the discovery of the electric arc by Sir Humphry Davy in 1800.

Variations

* Twin carbon arc welding (TCAW) in which the arc is established between two carbon electrodes
* Gas carbon arc welding (CAW-G) no longer has commercial significance. Other processes that use shielding gases have also replaced carbon arc welding such as "tungsten-arc welding" (GTAW, or TIG), "plasma-arc welding" (PAW), and "atomic-hydrogen welding" (AHAW). Each of these processes, including carbon arc welding, use a non consumable electrode. A filler metal is generally used to aid the bond in the workpieces.

(Picture provided by Answers.com, http://www.answers.com/topic/carbon-arc-welding?cat=technology)

References

* "Welding handbook Volume 2, eighth edition." Library of Congress number: 90-085465 copyright 1991 by American Welding Society

External links

* [http://www.aws.org/ The American Welding Society]
* [http://www.weldinginspectionsvcs.com/WeldingProcessNames.htm Commonly Used Welding Processes and their Abbreviation] – Welding Inspection Services website
* [http://www.cwa-acs.org Canadian Welding Association]
* [http://www.twi.co.uk/ The Welding Institute]
* [http://www.key-to-steel.com/Articles/Art75.htm Welding Process] – Key to Steel (Online steel properties database)


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Carbon arc welding — Carbon arc welding. См. Углеродистая дуговая сварка. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Twin carbon arc welding — Unlike single carbon arc welding, in twin carbon arc welding the arc is maintained between two carbon electrodes held in a special holder. Current is switched on and by operating the mechanism of arc length adjustment the two electrodes are… …   Wikipedia

  • Gas carbon arc welding — Gas carbon arc welding. См. Газовая дуговая сварка угольным электродом. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Arc welding — uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or alternating (AC) current, and consumable or non consumable electrodes.… …   Wikipedia

  • carbon arc — noun has carbon electrodes • Syn: ↑carbon arc lamp • Hypernyms: ↑arc lamp, ↑arc light • Hyponyms: ↑klieg light * * * noun 1. : an …   Useful english dictionary

  • carbon arc — an electric arc between two carbon electrodes, used mainly for lighting, as in an arc light for a motion picture projector, or for intense heating, as in the cutting and welding of metals. [1905 10] * * * …   Universalium

  • Submerged arc welding — (SAW) is a common arc welding process. Originally devolved by the Linde Union Carbide Company. It requires a continuously fed consumable solid or tubular (flux cored) electrode. The molten weld and the arc zone are protected from atmospheric… …   Wikipedia

  • Gas metal arc welding — RMD redirects here. RMD may also refer to IRA Required Minimum Distributions. Gas metal arc welding …   Wikipedia

  • Shielded metal arc welding — (SMAW), also known as manual metal arc (MMA) welding, flux shielded arc welding …   Wikipedia

  • Gas tungsten arc welding — TIG welding of a bronze sculpture Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.