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The use and precautions of graphite electrode

Pulished on Nov. 18, 2019

We are a graphite electrode manufacturer, including graphite electrode, graphite block, graphite crucible, graphite powder.

Carbon graphite is the most widely used friction pair material in mechanical seal industry, which has good self-lubricating performance, low friction coefficient, good corrosion resistance, good thermal conductivity, low coefficient of linear expansion, good pair performance and temperature resistance.

Application of graphite electrode

1. The graphite electrode used in electric arc steelmaking furnace is mainly used in electric furnace steelmaking. Electric furnace steelmaking is to use graphite electrode to introduce current into the furnace. Strong current generates arc discharge through gas at the lower end of the electrode, and uses the heat generated by the arc to smelt. According to the capacity of the electric furnace, graphite electrodes with different diameters are used. In order to make the electrodes continuously used, the electrodes are connected by threaded joints. The amount of graphite electrode used in steelmaking is about 70-80% of the total amount of graphite electrode.

2. The lower part of the conductive electrode is buried in the charge, so in addition to the heat generated by the electric arc between the electric plate and the charge, the heat is also generated by the resistance of the charge when the current passes through the charge.

3. The graphitization furnace, the melting furnace for glass and the electric furnace for silicon carbide are all resistance furnaces. The materials in the furnace are both the heating resistance and the heated object. Generally, the graphite electrode for conducting is inserted into the furnace head wall at the end of the furnace bed, so the conducting electrode is not consumed continuously.

UHP Graphite Electrode

UHP Graphite Electrode

Matters needing attention

1. The wet graphite electrode shall be dried before use.

2. Remove the foam protective cap on the spare graphite electrode hole and check whether the thread in the electrode hole is complete.

3. Clean the surface of spare graphite electrode and internal thread of hole with compressed air free of oil and water; avoid cleaning with steel wire or metal brush cloth.

4. Carefully screw the joint into the electrode hole at one end of the standby graphite electrode (it is not recommended to directly install the joint into the replaced electrode on the furnace), and do not collide with the thread.

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

When lifting the electrode, pad the soft object under one end of the spare electrode mounting joint to prevent the ground from damaging the joint; use the hook to extend into the lifting ring of the spreader and lift the electrode stably to prevent the electrode from loosening from the B end or colliding with other fixed devices.