The Physics Factbook™
Edited by Glenn Elert -- Written by his students
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|Bibliographic Entry||Result |
|Brown, Lemay, and Bursten. Chemistry. Upper Saddle River, New Jersey: Prentice Hall, 1997: 826.||"The reaction between C2H2 and O2 is highly exothermic, producing temperatures in excess of 3,000 °C"||3,000 °C|
|Lua'y A. Zeatoun and Philip W. Morrison, Jr. Optimizing diamond growth for an atmospheric oxyacetylene torch. Journal of Materials Research. Vol. 12, No. 5 (January 1997): 1237-1252.||"The torch can reach temperatures as high as 3,480 degrees Celsius"||3,480 °C|
|The Welding Institute. Job knowledge for welders 27: Health, safety and accident prevention, Oxyacetylene welding, cutting and heating. 2002.||"The oxyacetylene process produces a high temperature flame over 3,000 degrees C, by combustion of pure oxygen and acetylene"||3,000 °C|
|Reinhold, Van Nostrand. Scientific Encyclopedia. New York: Van Nostrand, 1982: 2114.||"When combined in proper proportions, acetylene and oxygen yield a flame with a temperature of about 3,480 °C"||3,480 °C|
|oxyacetylene torch. encyclopedia.com, 2002.||"The temperature of the flame can reach as high as 6,300 (3,480)."||3,480 °C|
Thomas Wilson created the oxyacetylene torch in 1903. He combined both pureoxygen (99.5%) and acetylene in proper proportions to yield a flame of about 3,480degrees Celsius. Oxyacetylene the only gas mixture that will burn hot enough tocut steel. It is particularly useful for welding different metals underwater.
The chemical action of the oxyacetylene flame can be adjusted by changing theratio of the volume of oxygen to acetylene. Three distinct flame settings areused, neutral, oxidizing and carburizing. Welding is generally carried out usingthe neutral flame setting, which has equal quantities of oxygen and acetylene.The oxidizing flame is obtained by increasing just the oxygen flow rate whilethe carburising flame is achieved by increasing acetylene flow in relation tooxygen flow.
Oxyacetylene equipment is portable and easy to use. Oxygen and acetylene gasesare stored under pressure in steel cylinders. The cylinders are fitted with regulatorsand flexible hoses, which lead to the blowpipe. Specially designed safety devicessuch as flame traps are fitted between the hoses and the cylinder regulators.The flame trap prevents flames generated by a flashback from reaching the cylinders.
Anthony Cheedie -- 2002
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