welcome to
|
|
|
|
|
Detail application of electrode
Type of electrode |
Grade code |
Applicable type of furnace |
Regular power Graphite electrodes |
RP
|
Electric arc furnace in regular power ; mine hot furnace at small and middle scale
|
Impregnated Graphite electrodes |
IP
|
Electric arc furnace in regular power ; mine hot furnace at middle and large scale; partial electric arc furnace in high power |
High power Graphite electrodes |
HP
|
Electric arc furnace in high power ; partial electric arc furnace in super-high power |
Super high power Graphite electrodes |
SHP
|
Partial electric arc furnace in high power; partial electric arc furnace in super-high power. |
Ultra high power Graphite electrodes |
UHP
|
Electric arc furnace in super-high power.
|
Specifications of Graphite electrode and Nipple
ITEM |
UNIT |
RP |
IP |
|||||
250`400 |
450-600 |
250-400 |
450-500 |
550-600 |
||||
Resistivity ≤ |
Electrode |
µ Ω m
|
8.5 |
9.0 |
6.5 |
7.0 |
8.0 |
|
Nipple |
5.50 |
5.0 |
||||||
Bending Strength ≥
|
Electrode |
M P a
|
8.00 |
7.00 |
10.00 |
|||
Nipple |
16.00 |
18.00 |
||||||
Elastic modulus ≥ |
Electrode |
G P a
|
9.30 |
12.00 |
||||
Nipple |
14.00 |
16.00 |
||||||
ASH ≥ |
Electrode |
% |
0.30 |
0.30 |
||||
Nipple |
||||||||
Bulk density ≥ |
Electrode |
g/cm³ |
1.54 |
1.64 |
||||
Nipple |
1.70 |
1.72 |
||||||
CTE ≤ |
Electrode |
10-6 1/℃
|
2.50 |
2.20 |
||||
Nipple |
2.00 |
1.80 |
||||||
Specifications of Graphite electrode and Nipple
ITEM |
UNIT |
HP |
SHP |
UHP |
||||
250-400 |
450-600 |
250-400 |
450-600 |
300-400 |
450-600 |
|||
Resistivity ≤ |
Electrode |
µ Ω m
|
6.0 |
6.5 |
5.5 |
6.0 |
5.0 |
5.5 |
Nipple |
4.50 |
4.00 |
4.00 |
|||||
Bending Strength ≥ |
Electrode |
M P a
|
10.50 |
13.00 |
15.00 |
|||
Nipple |
20.00 |
22.00 |
24.00 |
|||||
Elastic modulus ≤ |
Electrode |
G P a
|
12.00 |
12.00 |
14.00 |
|||
Nipple |
16.00 |
16.00 |
18.00 |
|||||
ASH ≤ |
Electrode |
% |
0.20 |
0.20 |
0.20 |
|||
Nipple |
||||||||
Bulk density ≥ |
Electrode |
g/cm³ |
1.65 |
1.67 |
1.68 |
|||
Nipple |
1.74 |
1.75 |
1.76 |
|||||
CTE ≤ |
Electrode |
10-6 1/℃ |
2.00 |
1.60 |
1.50 |
|||
Nipple |
1.60 |
1.40 |
1.20 |
|||||
Size and permissible variation of Graphite Electrode
Diameter (mm) |
Length (mm) |
|||||
Nominal Diameter(mm) |
Actual Diameter (mm) |
Nominal Length(mm) |
Permissible variation |
|||
mm |
Inch |
mm |
Inch |
Nominal Length (mm) |
Undergauge length (mm) |
|
200 |
8 |
203 ± 2 |
1600 |
60 |
± 100 |
-275 |
250 |
10 |
254 ± 2 |
1600 1800 |
60 72 |
± 100 |
-275
|
300 |
12 |
305 ± 2 |
||||
350 |
14 |
355 ± 2 |
||||
400 |
16 |
407 ± 2 |
||||
450 |
18 |
458 ± 2 |
1800 2000 |
72 79 |
± 100 |
-275
|
500 |
20 |
509 ± 2 |
||||
600 |
24 |
610 ± 2 |
||||
Normal size of taper Nipple
Nominal Diameter ( mm ) |
Nipple type |
Size ( mm) |
|
Diameter (mm) |
Length( mm) |
||
T4 |
|||
200 |
122T4N |
122.40 |
177.80 |
250 |
152T4N |
152.40 |
190.50 |
300 |
177 T4N |
177.80 |
215.50 |
350 |
203 T4N |
203.20 |
254.00 |
400 |
222 T4N |
222.25 |
304.80 |
400 |
222 T 4L |
222.25 |
355.60 |
450 |
241 T4N |
241.30 |
304.80 |
450 |
241 T 4L |
241.30 |
355.60 |
500 |
269 T4N |
269.88 |
355.60 |
500 |
269 T 4L |
269.88 |
457.20 |
600 |
317 T4N |
317.50 |
355.60 |
600 |
317 T 4L |
317.50 |
457.20 |
|
T3 |
||
250 |
155 T3N |
155.57 |
220.00 |
300 |
177 T3N |
177.16 |
270.90 |
350 |
215 T3N |
215.90 |
304.80 |
400 |
241 T3N |
241.30 |
338.70 |
450 |
273 T3N |
273.05 |
355.60 |
500 |
298 T3N |
298.45 |
372.60 |
Graphite Electrodes permissible Current Load
Nominal Diameter (mm) |
RP |
IP |
HP |
UHP |
||||
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 |
15000-22000 |
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 |
Copyright 2007, Dalian LST Metallurgy Co.,Ltd All rights reserved.