GRAPHITE ELECTRODE
Introduction
Artificial graphite electrode is made of high-quality low ash materials, such as petroleum coke, needle coke and coal pitch. After calcining, burdening, kneading, forming, baking and pressure impregnation, it is graphitized in a high temperature of over
product current carrying capacity table
|
Norminal Diameter |
RP |
HD |
HP |
UHP |
||||
|
(mm) |
A |
A/cm2 |
A |
A/cm2 |
A |
A/cm2 |
A |
A/cm2 |
|
75 |
1000-1400 |
22-31 |
1300-2000 |
29-45 |
|
|
|
|
|
100 |
1500-2400 |
19-30 |
1800-3000 |
22-37 |
|
|
|
|
|
130 |
2200-3400 |
17-26 |
2800-4200 |
21-31 |
|
|
|
|
|
150 |
3000-4500 |
16-25 |
4000-5000 |
22-28 |
|
|
|
|
|
200 |
5000-6900 |
15-21 |
4800-9000 |
15-28 |
5500-9000 |
18-25 |
|
|
|
250 |
7000-10000 |
14-20 |
8000-12000 |
16-24 |
8000-13000 |
18-25 |
|
|
|
300 |
10000-13000 |
14-18 |
11000-16000 |
15-22 |
13000-17400 |
17-24 |
15000-20000 |
20-30 |
|
350 |
13500-18000 |
14-18 |
15000-22000 |
15-22 |
17400-24000 |
17-24 |
20000-30000 |
20-30 |
|
400 |
18000-23500 |
14-18 |
20000-28000 |
15-22 |
21000-31000 |
16-24 |
25000-40000 |
19-30 |
|
450 |
22000-27000 |
13-17 |
24000-34000 |
15-21 |
25000-40000 |
15-24 |
32000-45000 |
19-27 |
|
500 |
25000-32000 |
13-16 |
28000-42000 |
13-20 |
30000-48000 |
15-24 |
38000-55000 |
18-27 |
Technical specification of Graphite Electrode
|
Item |
unit |
RP |
HD |
HP |
UHP |
|||||
|
Φ250-Φ400 |
Φ450-Φ500 |
Φ250-Φ400 |
Φ450-Φ500 |
Φ250-Φ400 |
Φ450-Φ500 |
Φ250-Φ400 |
Φ450-Φ500 |
|||
|
Resistivity |
Electrode |
μΩ.m |
7.0-9.0 |
7.0-9.5 |
5-7 |
5.5-7.5 |
4.8-6.2 |
5-6.5 |
4.0-5.5 |
4.0-5.8 |
|
Nipple |
4.0-5.8 |
3.0-4.5 |
3.0-4.5 |
3.0-4.0 |
||||||
|
Bending Strengths |
Electrode |
Mpa |
7.8-10.0 |
7.0-10.0 |
10-15 |
10-15 |
10.5-16 |
|||
|
Nipple |
17.0-25.0 |
19-27 |
19-27 |
20-28 |
||||||
|
Elastic Modulus |
Electrode |
Gpa |
6.0-9.3 |
8-12 |
8-12 |
9-14 |
||||
|
Nipple |
11.0-14.0 |
12-16 |
12-16 |
14-18 |
||||||
|
Ash |
% |
0.1-0.5 |
0.1-0.3 |
0.1-0.3 |
0.1-0.3 |
|||||
|
Bluk Density |
Electrode |
g/cm3 |
1.54-1.62 |
1.64-1.72 |
1.65-1.74 |
1.67-1.75 |
||||
|
Nipple |
1.70-1.80 |
1.74-1.82 |
1.74-1.82 |
1.76-1.84 |
||||||
|
CTE |
Electrode |
10-6/℃ |
1.8-2.5 |
1.7-2.3 |
1.6-2 |
1.2-1.5 |
||||
|
Nipple |
100 |
1.5-2.2 |
1.3-1.6 |
1.3-1.6 |
0.9-1.2 |
|||||
1) NIPPLE Norminal size of Nipple Norminal Diameter (mm) IEC Code Size(mm) Four threads Per Inch Φ D L 200 122T4N 122.24 177.8 250 152T4N 152.4 190.5 300 177T4N 177.8 215.9 350 203T4N 203.2 254 400 222T4N 222.25 304.8 400 222T 222.25 355.6 450 241T4N 241.3 304.8 450 241T 241.3 355.6 500 269T4N 269.88 355.6 500 269T 269.88 457.2 600 317T4N 317.5 355.6 600 317T 317.5 457.2 Norminal Diameter (mm) Three threads Per Inch 250 155T3N 155.57 220 300 177T3N 177.16 270.9 350 215T3N 215.9 304.8 400 241T3N 241.3 338.7 450 273T3N 273.05 355.6 500 298T3N 298.45 372.6 Dimension tollerance Diameter length Norminal diameter Actual diameter Norminal length Permissible variation mm inch mm inch Nominal L Undergaugel L 200 8 203±2 1600 ±100 -275 250 300 350 10 12 14 254±2 305±2 355±2 1600 1800 60 72 ±100 -275 400 450 500 600 16 18 20 24 407±2 458±2 509±2 610±2 1800 2000 72 79 ±100 -275
