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Welding Engineering
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Overview Contents: Introduction : Evolution of welding; classification of welding processes; heat sources and shielding methods. Physics of Welding Arc : Welding arc; voltage distribution along the arc; thermionic and non-thermionic cathodes; theories of cathode and anode mechanism; arc characteristics and its relationship with power source; arc efficiency; heat generation; effect of type of shielding gas on arc; isotherms of arcs.
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