Technology

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.

A cartoon picture about the transportation caution of graphite electrodes.

Note 1: Transportation

Graphite electrode should be covered with rain-proof tarpaulin in the process of transportation.

A cartoon picture about the forklift transport caution.

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

A cartoon picture about the loading caution of graphite electrodes

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.

A cartoon picture about the storage caution of graphite electrodes.

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.

A cartoon picture about the precautions before use.

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.

A cartoon picture about the wrapping tape cutting caution.

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.

A cartoon picture about the installation caution.

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.

A cartoon picture about the electrode thread cleaning caution.

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.

A cartoon picture about the hoisting attention of graphite electrode.

Note 9: Hoisting Attention

Use revolved resilient hanger and put soft cushions under the electrode nipple to avoid breakage of thread.

A cartoon picture about the thread cleaning method of graphite electrode.

Note 10: Connection Caution

Before connecting, clean the screw thread of electrode with compressed air free of oil and water.

A cartoon picture about nipple connecting caution.

Note 11: Nipple Connection

When connecting, the electrode is aligned with the center axis of the nipple to which is the connected.

A cartoon picture show the special caliper to tight electrode.

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.

A cartoon picture show the proper position where electrode clamp placed.

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.

A cartoon picture show the matching relationship between electric furnace capacity and electrode grade.

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.

A cartoon picture about matters needing attention for material feeding.

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
inch mm kg/m inch mm kg/m
8 200 35 16 400 110
10 250 50 18 450 160
12 300 70 20 500 210
14 350 90 24 600 350

Useful Tips

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.