What are the precautions for graphite electrodes?
1. Moist graphite electrodes should be dried before use.
2. Remove the foam plastic protective cap on the spare graphite electrode hole and check whether the inner thread of the electrode hole is intact.
3. Use compressed air without oil and water to clean the surface and the threads in the hole of the spare graphite electrode; avoid cleaning with steel wire balls or metal brushes and sandpaper.
4. Carefully screw the joint into the electrode hole at one end of the spare graphite electrode (it is not recommended to directly install the joint into the electrode removed from the furnace), and do not collide with the threads.
5. Screw the electrode hanger (it is recommended to use a hanger made of graphite) into the electrode hole at the other end of the spare electrode.
6. When lifting the electrode, place soft objects under one end of the spare electrode joint to prevent the ground from damaging the joint; lift it after the hook is inserted into the lifting ring of the hanger. The electrode should be lifted steadily to prevent the electrode from loosening from the B end or colliding with other fixing devices.
7. Lift the spare electrode above the electrode to be connected, align it with the electrode hole and slowly lower it; rotate the spare electrode so that the spiral hook rotates and descends with the electrode; when the end faces of the two electrodes are 10-20mm apart, use compressed air to clean the exposed parts of the two end faces of the electrode and the joint again; when the electrode is completely lowered, do not do it too hard, otherwise the electrode hole and the thread of the joint will be damaged due to violent collision.
8. Use a torque wrench to tighten the spare electrode until the end faces of the two electrodes are in close contact (the correct connection gap between the electrode and the joint is less than 0.05mm).
