Graphite electrodes are mainly divided into ordinary power graphite electrodes, high power graphite electrodes and ultra high power graphite electrodes. Graphite electrode manufacturers will introduce their respective characteristics and considerations. Universal power graphite electrode The allowable current density of the graphite electrode is less than 17A / cm2, and is mainly used in ordinary electric furnaces such as steel making, silicon and yellow phosphorus. High power graphite electrode The graphite electrode has an allowable current density of 18-25 A/cm 2 and is mainly used in high-power electric arc furnaces for steel making. Ultra high power graphite electrode The allowable current density of the graphite electrode is greater than 25 A/cm 2 . Mainly used in electric arc furnaces for ultra-high power steelmaking. Things to note 1. Dry the wet graphite electrode before use. 2. Remove the foam protective cap from the spare graphite electrode hole and check that the threads in the electrode hole are intact. 3. Clean the surface and hole threads of the spare graphite electrode with oil-free and water-free compressed air; avoid cleaning with steel wire or metal brush. 4. Carefully rotate the fitting into the hole in the spare graphite electrode (it is not recommended to load the fitting directly into the electrode removed from the oven) and do not collide with the thread. 5. Wind the electrode hanger (recommended from graphite) into the electrode hole at the other end of the backup electrode. 6. When lifting the electrode, the washer should be loosened to the bottom of one end of the spare electrode mounting joint to prevent the ground from colliding with the joint; when lifting the electrode by hooking the loop of the hanger, the lifting electrode should be stable to prevent the electrode from being in B The end is loose or collides with other fixtures. 7. Hang the spare electrode above the electrode to be connected and slowly descend after aligning the electrode hole; rotate the spare electrode to rotate the screw hook together with the electrode; when the ends of the two electrodes are 10-20 mm apart, compress again Air cleans the exposed portions and joints at both ends of the electrode; do not pass when the electrode is finally fully lowered. Otherwise, the electrode holes and the threads of the joint may be damaged by a strong collision. 8. Wrap the spare electrode with a torque wrench until the ends of the two electrodes are in intimate contact (the correct joint clearance between the electrode and the joint is less than 0.05 mm).
