Graphite Electrode


graphite electrode

Graphite electrode is mainly from the domestic petroleum coke and imported needle coke, graphite electrodes are widely used in electric arc furnace, ladle furnace, submerged arc electric furnace for the production of alloy steel, metal and nonmetallic materials. Our graphite electrodes include regular power, high power, super high power and ultra high power. They are characterized by low resistivity, good electric and thermal conductivity, high resistance to oxidation and thermal shock, high mechanical strength, ect.

graphite electrode

Graphite Electrode Description

 

Graphite electrode will be a high temperature graphite conductive material, the core of which consists of petroleum coke, tar coke as a filler, coal tar as a binder. We produce graphite electrodes and nipples to them. Graphite electrodes are characterized by low resistance, good electrical conductivity and thermal conductivity, high resistance to oxidation and thermal shock, high mechanical strength.

 

Properties of Graphite Electrode

 

.Low electric resistance,
.High density,
.High anti-oxidation capability,
.Precise machining accuracy.

 

Advantages of Graphite Electrode

 

.High purity and high density, high mechanical, strength strong, chemical stability,

.The surface can be used for the long life of anti oxidation treatment,

.High temperature resistance, corrosion resistance, strong acid resistance,

.Excellent resistance to thermal shock and conduction,

.Good wear resistance, good lubricity and long service life,

.Can be packaged in accordance with customer requirements.

 

Details of Graphite Electrode

 

Item Graphite electrode
Grade RP, HP, SHP, UHP, ect.
Diameter 200mm to 700mm, according to the order
Length 1800mm to 2700mm, according to the order
Nipple 3TPI, 4TPI
Material 1. Regular power graphite electrode: made from petroleum coke with a little

pitch

2. High power graphite electrode: made form 70% petroleum coke and 30%

imported needle coke

3. Ultra high power graphite electrode: made from 100% imported needle coke

 

Physical and Chemical Index of Graphite Electrode

 

Item

 

Unit RP HP UHP
250-300mm 350-550mm 200-400mm 450-550mm 300-400mm 450-550mm
Resistivity(Max) Electrode μΩ·m 9.0 7 7.5 6.2 6.5
Nipple 8.5 6.5 5.5
Bending Strength(Min) Electrode Mpa 7.8 6.4 10.5 9.8 10.5 10.0
Nipple 13.0 14.0 16.0
 

Elastic Modulus

Electrode Gpa 9.3 12.0 14.0
Nipple 14.0 16.0 18.0
 

Bulk Density

Electrode g/cm3 1.52 16.0 1.65 1.64
Nipple 1.68 17.0 1.72 1.70
Ash(Max) Electrode % 0.5 0.3 0.3
Nipple
CTE(Max) Electrode 10-6/°C 2.9 2.4 1.5
Nipple 2.8 2.2 1.4

 

 Tolerances of Electrode Diameters and Lengths (mm)

Nominal Actual Diameter Length
Max Min Black surface min
250 256 251 248 1600/1800
300 307 302 299 1600/1800
350 357 352 349 1600/1800
400 409 403 400 1600/1800/2000/2200
450 460 454 451 1600/1800/2000/2200
500 511 505 502 1800/2000/2200/2400
550 562 556 553 1800/2000/2200/2400

 

Recommended Current Carrying Capacity

Nominal

diameter

RP HP UHP
Electrical Arc furnace Electrical arc furnace Ladle Refining

furnace

Electrical arc furnace Ladle Refining

furnace

Current Carrying Capacity Current Density Current Carrying Capacity Current Density Current Carrying Capacity Current Density Current Carrying Capacity Current Density Current Carrying Capacity Current Density
in mm A A/cm² A A/cm² A A/cm² A A/cm² A A/cm²
12 300 1100-

1500

15-21 13000- 17500 18-25 15000- 21000 21-29        
14 350 15000- 20000 15-20 17500- 24500 18-25 20000- 28000 21-29 22000- 31000 23-32 24000- 33000 25-34
16 400 1900- 26000 15-20 21500- 32000 17-25 24000- 35000 19-28 28000- 41000 22-32 31000- 44000 24-34
18 450 23000 31000 14-19 26000- 40500 16-25 29000- 45000 18-28 33000- 46000 20-28 36000- 49000 22-30
20 500 2800- 3600 14-18 32000- 50000 16-25 32000- 50000 17-27 38000- 56000 19-28 42000- 60000 21-30
22 550 32000 42000 13-17 37000- 57000 15-23 37000- 57000 16-25 45000- 65000 18-26 50000- 70000 20-28

 

Applications of Graphite Electrode

 

  1. 1. Graphite electrode can be widely used in electric arc furnace and ladle refining furnace for steelmaking
  2. Graphite electrodes can be widely used in the electric smelting furnace for producing the ferroalloy, pure silicon, yellow phosphorus, copper matte, calcium carbide and so on.
  3. Graphite electrode also can be widely used in the electrical resistance furnace for glass melting, silicon carbide making, graphite product manufacturing, ect.

 

Graphite Electrode Manufacturer from RS Refractory Factory

 

RS refractory factory as a professional graphite electrode manufacturer in china, have many competitive advantages in the market. if you have demand of graphite electrodes, or have some questions on graphite electrodes about physical and chemical indicators, please contact us for free, we will provide you with high quality graphite electrodes.