Recommended Storing, Handing and Using for Graphite Electrodes
Graphite is a brittle material, with limited flexibility. For reducing the consumption & cost, please handle your graphite electrodes carefully.
Note 1: Transportation
Graphite electrode should be covered with rain-proof tarpaulin in the process of transportation.
Note 2: Forklift Transport
Be careful when transporting and pilling the electrodes with forklift and avoid collisions. One layer of goods at a time, notice the balance and alignment to avoid falling or breakage
Note 3: Loading Caution
When loading and unloading with forklift, additional wire rope must be used and steel wrapping tape can not be employed directly to fetch electrode.
Note 4: Storage Caution
Electrode should be stored in clean and dry place. When stocked in open area, it should be covered with rain-proof tarpaulin and the number of piling layers ought not to exceed four.
Note 5: Precautions Before Use
Electrodes should be dried next to electric furnace before using. The temperature should not exceed 120 °C and the time should not be less than 48 hours.
Note 6: Wrapping Tape Cutting
When using electrode, special tools should be employed to cut the steel wrapping tape, and crane should not be adopted to avoid bursting.
Note 7: Installation Caution
Please clean the electrode threads first before connection, then screw the nipple into one end of the electrode. Don't touch the thread, and don't put the joint directly into the working electrode on furnace.
Note 8: Electrode Thread Cleaning
Steel-wire ball, metallic brush or emery cloth is not allowed for cleaning electrode thread, but compressed air free of oil and water is available.
Note 9: Hoisting Attention
Use revolved resilient hanger and put soft cushions under the electrode nipple to avoid breakage of thread.
Note 10: Connection Caution
Before connecting, clean the screw thread of electrode with compressed air free of oil and water.
Note 11: Nipple Connection
When connecting, the electrode is aligned with the center axis of the nipple to which is the connected.
Note 12: Tighten the Electrode
Use special caliper to tight electrode according to rated torque by mechanical way, hydraulic pressure or wind pressure equipment should also be available.
Note 13: Electrode Clamp Position
Clamp holder should be placed out of the alarm line. (Note: clamp holder should not clamp at alarm line zone, or the middle of the electrode, as it is easy to cause the rupture of the electrode) Clamp holder and interfaces of the electrode must be cleaned regularly to keep good touch with electrode. Cooling water jacket of the clamp holder should be tight to prevent water leakage.
Note 14: Graphite Electrode Selection
To avoid the electrode breakage, insulating materials should not be put into the furnace. The working current of electrode must be conformity with the allowable current of electrode in the instructions.
Note 15: Large Material Smelting
In order to avoid electrode breakage, put the large materials in lower part and small materials on the upper part.
Note 16: Nipple Connecting Torque
If the two poles of electrode are 6untouched or touched in overpressure, this may cause bad effect. Please refer to the rated torque in the below form.
|Diameter||Torque Norm||Diameter||Torque Norm|
Using a steel electrode cover to prevent the upper part of electrode group from being oxidized by flame coming from the electrode inserting holes. The cover can prevent the electrode from being polluted by the ash coming from the electrode inserting holes.
To keep joining parts from loosening, place a nipple-pin on the nipple. At normal temperature, the pin will remain in a solid state. As the temperature rises, the melting nipple pin will bind the electrode and nipple together.