Through the analysis on the main cause of the accident of the electrical line,the higher contact resistance on the connecting points of the aluminium wires,this paper draws the conclusion that the safety coefficient of the copper wires in the residential electrical lines is higher than that of the aluminium wires.

Welding technology control of aluminum bus in thermal power plant;

Several technical problems noted during production of aluminum bus are discussed in the article from the view of liquid aluminum,ladle,mould and ingot guiding head.

Microstructure feature of the aluminium wire and melted bead in the fire disaster of electrical equipment line;