Russian (Russia) 
Español (España) 
Graphite electrodes is a kind of conductor, it is essential component for melting scrap of electric arc furnace and ladle furnace. We supply RP,HP,UHP grade graphite electrodes from dia250mm to dia700mm for both arc furnace and ladel furance. HKT graphite electrodes and nipples have good quality base on below properties:
|
Low electrical resistance Good thermal conductivity High resistance to thermal shocks |
Good mechanical strength High resistance to oxidation Exact mechanical machining |
Manufacturing within narrow tolerances Safe locking Low graphite electrode consumption |
We choose high quality raw material and strictly process to ensure the good quality graphite electrodes.
- Raw Material： Petroleum coke+Needel code+Pitch
- Manufacture Process:
- How to Choose the graphite grade? You may according to the below parameter to choose or contact us.
|
Item
|
Unit
|
Nominal Diameter
|
||||||||
|
UHP
|
HP
|
RP
|
||||||||
|
Φ300-400
|
≥Φ450
|
Φ250-400
|
≥Φ450
|
Φ250-400
|
Φ450-600
|
|||||
|
Electric Resistivity
|
electrode
|
μΩ·m
|
≤5.0
|
≤5.5
|
≤6.0
|
≤6.5
|
≤8.5
|
≤9.0
|
||
|
Nipple
|
≤4.0
|
≤4.5
|
≤5.5
|
|||||||
|
Transverse Strength
|
electrode
|
MPa
|
≥15.0
|
≥10.5
|
≥8.0
|
≥7.0
|
||||
|
Nipple
|
≥24.0
|
≥20.0
|
≥16.0
|
|||||||
|
Young’s Modulus
|
electrode
|
GPa
|
≤14.0
|
≤12.0
|
≤9.3
|
|||||
|
Nipple
|
≤18.0
|
≤16.0
|
≤14.0
|
|||||||
|
Bulk Density
|
electrode
|
g/cm3
|
≥1.68
|
≥1.65
|
≥1.54
|
|||||
|
Nipple
|
≥1.76
|
≥1.74
|
≥1.70
|
|||||||
|
Coefficient of thermal expansion
|
electrode
|
10-6/℃
|
≤1.5
|
≤2.0
|
≤2.5
|
|||||
|
Nipple
|
≤1.2
|
≤1.6
|
≤2.0
|
|||||||
|
Ash
|
%
|
≤0.2
|
≤0.2
|
≤0.2
|
||||||
- Suggested Current Capacity and Current Density
|
Norminal Diameter
|
RP
|
HP
|
UHP
|
|||
|
mm
|
Current load
A
|
Current Density A/cm2
|
Current load
A
|
Current Density A/cm2
|
Current load
A
|
Current Density A/cm2
|
|
200
|
5000-6900
|
15-21
|
5500-9000
|
18-25
|
||
|
250
|
7000-10000
|
14-20
|
8000-13000
|
18-25
|
9200-15100
|
21-30
|
|
300
|
10000-13000
|
14-18
|
13000-17400
|
17-24
|
13000-22000
|
20-30
|
|
350
|
13500-18000
|
14-18
|
17400-24000
|
17-24
|
20000-30000
|
20-30
|
|
400
|
18000-23500
|
14-18
|
21000-32000
|
16-24
|
25000-40000
|
19-30
|
|
450
|
22000-27000
|
13-17
|
25000-40000
|
15-24
|
32000-45000
|
19-27
|
|
500
|
25000-32000
|
13-16
|
30000-48000
|
15-24
|
38000-55000
|
18-27
|
|
550
|
32000-40000
|
13-16
|
37000-57000
|
15-23
|
48000-60000
|
18-24
|
|
600
|
38000-47000
|
13-16
|
44000-67000
|
15-23
|
52000-72000
|
18-24
|
|
700
|
45000-54000
|
13-16
|
54000-73000
|
15-23
|
62000-95000
|
18-24
|
- Average Weights of Graphite Electrodes and Nipples
| Nominal Electrode Size | Average Weight | |||
| Diameter | Length | Electrode | Nipple | |
| Normal | Long | |||
| mm | mm | kg | kg | kg |
| 350 | 1800 | 300 | 11 |
13
|
| 350 | 2100 | 350 | 11 | 13 |
| 400 | 1800 | 390 | 16 | 18 |
| 400 | 2100 | 465 | 16 | 18 |
| 400 | 2400 | 531 | 16 | 18 |
| 450 | 1800 | 500 | 19 | 22 |
| 450 | 2100 | 580 | 19 | 22 |
| 450 | 2400 | 663 | 19 | 22 |
| 500 | 1800 | 615 | 28 | 34 |
| 500 | 2100 | 707 | 28 | 34 |
| 500 | 2400 | 815 | 28 | 34 |
| 550 | 2100 | 850 | 35 | 42 |
| 550 | 2400 | 965 | 35 | 42 |
| 600 | 2100 | 1000 | 40 | 50 |
| 600 | 2400 | 1140 | 40 | 50 |
| 600 | 2700 | 1300 | 40 | 50 |
- Reinforced packaging for overseas transport
If you need more information Please contact us freely!