Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the U.S.) and oxy-fuel cutting are processes that use fuel gases and oxygen to weld and cut metals, - Comment - Israel News | Haaretz Daily Newspaper
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    • PETER SM
    • 29.06.10 | 04:39 (IDT)

    Oxy-fuel welding (commonly called oxyacetylene welding, oxy welding, or gas welding in the U.S.) and oxy-fuel cutting are processes that use fuel gases and oxygen to weld and cut metals, respectively. French engineers Edmond Fouche and Charles Picard became the first to develop an oxygen-acetylene welding set-up in 1903.[1] Pure oxygen, instead of air (20% oxygen/80% nitrogen), is used to increase the flame temperature to allow localized melting of the workpiece material (e.g. steel) in a room environment. A common propane/air flame burns at about 2,000°C, a propane/oxygen flame burns at about 2,500°C, and an acetylene/oxygen flame burns at about 3,500°C. Since iron melts at about 1,500°C (high carbon steel at about 1,150°C), air flames can achieve melting only in a specialized insulated furnace. Small, high-flow, oxygen flames provide enough heat flow to locally exceed the melting point in a large workpiece (e.g. sheet). WIKIPEDIA Gazans have fired missiles by the thousands onto Israeli civillians,Israeli hospitals,schools kindergartens and more.

    from the article: Report: Israel seizes oxygen machines donated to PA
    First published 08:34 26.06.10 | Last updated 08:34 26.06.10
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