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Spot Welding

    spot welder

    Resistance spot welding (RSW) or point welding is a process in which contacting metal surface points are joined by the heat obtained from #resistance to #electric current

    spot welder
    spot welder

    It used to weld metal sheets (0.5-3mm) thickness by holding the two pieces together and applying a force then electric current flows through copper electrodes that concentrates current into small spot at the welded pieces

    The pieces have a higher resistance than electrodes so the current produces heat when passes through it

    Spot-Welding
    Spot-Welding

    This heat melts metal pieces in the welding spot and the pressure joins it together

    The high amperage current is produced by electric #transformer

    transformer
    transformer