The Analytic For Graphite Electrode Broken (II)

　　1. the appearance of irregular broken of nipple:

　　a). there are few dust in the hole or nipple then the large resistance cause the oxidation in some parts of the joint thread is too fast.

　　b). the torque is not enough and the connection point is not firmed.

　　c). the lift is slight tilted, and it is difference barycenter between graphite graphite electrodes and furnace cover. The broken sound is lightly but sonoro.

　　d). the machinery deviation of nipples or the ovality is large.

　　2. the appearance of regular broken of nipple:

　　a). the deviation between graphite hole and nipple is mismatched or torque is not enough then cause the unscrewing thread.

　　b). the fluctuation range for second currency is too large or increased rapidly, then the momentary currency is outdistance the rated value too much.

　　c). the thermal shock is too large when production, and the connection point of graphite electrode is rubedo and show the resistance is too big. The sound of broken is tedious.

　　d). the big quality difference of nipple, and the nipple strength cannot meet the furnace condition.

　　Meanwhile, there is also having many other reasons which can cause the broken. Then it is good that the client can inform us more information and the pictures, so we can promote the graphite electrodes or make some suggestions.