Shielded metal arc - PowerPoint PPT Presentation

CE403 Construction Methodology

CE403 Construction Methodology. Steel Construction. Metals: History. 500 BC - wrought iron in Greece 6 th Century – wrought iron in China 1640s – 1 st successful iron works in U.S. (Saugus, Mass.) 1856 – Bessemer Process 1867 – Ead’s Bridge 1920 – Arc Welding.

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Arc Welding

Arc Welding. Arc Welding ( 아크용접 ) : Electric discharge is heat sorce. Gas tungsten AW (TIG). Shield metal AW. Gas metal AW (MIG). Heat transfer in arc welding. Welding speed is. e = efficiency V = voltage applied I = current u = specific energy A=weld section area.

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