The design essentials of totality arrangement、equipment Choice type、short network、current conducting arm、rotating device of the 120t ladle furnace with double cars double treatment working position by rotating the electrode arm at masteel were introduced.

With a view to the commonly observed severe corrosion of aluminum alloy conductive tube in high voltage isolator and its potential damage to the normal operation of the isolator, the causes leading to the corrosion and failure of the aluminum alloy conductive tubes were investigated by means of energy dispersive spectroscopy, metallography, and electron probe microscopy.