The use of joint electrode joint in graphite electrode is easy to break off and fracture, so the close connection of graphite electrode joint is very important. Graphite electrode joint can ensure the reduction of electrode consumption and electrical energy consumption. The mechanical properties and specific resistance of graphite electrode joint are better than that of the same kind, and the process is made of 100% needle like coke and two dipping three. Craftsmanship for calcine or three diffuse four calcine. Mainly used for the connection of graphite electrodes on the smelting furnace