The graphite electrode comprises:

(1) Ordinary power graphite electrode. Graphite electrodes with a current density of less than 17A/cm2 are allowed to be used, mainly for ordinary power electric furnaces such as steelmaking, silicon smelting, and yellow phosphorus smelting.

(2) Oxidation resistant coated graphite electrodes. A graphite electrode coated with an oxidation resistant protective layer on its surface forms a protective layer that is both conductive and resistant to high-temperature oxidation, reducing electrode consumption during steelmaking.

(3) High power graphite electrode. Graphite electrodes with a current density of 18 to 25A/cm2 are allowed to be used, mainly in high-power electric arc furnaces for steelmaking.

(4) Ultra high power graphite electrode. Graphite electrodes with a current density greater than 25A/cm2 are allowed. Mainly used in ultra high power electric arc furnaces for steelmaking.

National standard for ordinary power graphite electrodes:

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1. Wet graphite electrodes should be dried before use.

2. Remove the foam plastic protective cap from the spare graphite electrode hole, and check whether the internal thread of the electrode hole is complete.

3. Clean the surface and hole threads of the spare graphite electrode with compressed air free of oil and water; Avoid cleaning with wire balls or metal brush emery cloth.

4. Carefully screw the connector into the electrode hole at one end of the spare graphite electrode (it is not recommended to directly install the connector into the electrode removed from the furnace), and do not collide with the threads.

5. Screw the electrode sling (graphite material sling is recommended) into the electrode hole on the other end of the standby electrode.

6. When lifting the electrode, pad a soft object under one end of the spare electrode mounting joint to prevent the ground from damaging the joint; Use a hook to extend into the lifting ring of the sling and lift it. The electrode should be lifted smoothly to prevent it from loosening from the B end or colliding with other fixing devices.

7. Lift the standby electrode above the electrode to be connected, align it with the electrode hole, and then slowly drop it; Rotate the standby electrode to rotate and lower the spiral hook together with the electrode; When the end faces of the two electrodes are 10-20mm apart, clean the exposed parts of the two end faces of the electrode and the connector with compressed air again; When completely lowering the electrode, do not use excessive force, otherwise violent collisions may cause damage to the electrode hole and the threads of the connector.

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 connector is less than 0.05 mm).

"Graphite is very common in nature, and graphene is a substance known to have a high intensity, but it may still take years or even decades for scientists to find a way to convert graphite into large high-quality graphene" thin films ", which can be used to create various useful substances for humans.". According to scientists, in addition to being exceptionally strong, graphene also has a series of characteristics. Graphene is currently known as the most excellent material for conducting electricity, which makes it also have great application potential in the field of microelectronics. Researchers even see graphene as a substitute for silicon that can be used to produce future supercomputers.