The 550mm Graphite Electrodes with Nipples is an important high-temperature conductive material for steel making in electric furnace. Through the graphite electrode, electric energy is input to the electric furnace. Graphite electrode is widely used in the smelting of various metals, but its deficiency lies in its poor oxidation resistance at high temperature. To enhance the oxidation resistance of graphite electrode, the method of graphite electrode impregnation is usually adopted.The higher the current in the graphite electrode, the larger the pitting, so as the peak current increases, the rougher the surface becomes. The thin electrode is almost point contact work piece discharge at the beginning, small electrode can not withstand too strong current, easy to be damaged, so at the beginning of the current should be lowered, and then slowly increase the peak current until the discharge is stable, the processing speed is the fastest.
