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Ultra-High Power Graphite Electrodes
Ultra-High Power Graphite Electrodes are manufactured with
100% petroleum needle cokes according to the Ultra-high power
graphite electrodes productive technology through the process
of crushing, screening, dosing, kneading, extruding, baking,
high impregnation, rebaking, graphitizing, machining etc.
And nipples are manufactured with 100% petroleum needle cokes
imported from Japan, according to the technology of triplicate
impregnation and quadruple baking.
Specification of Ultra-High Power G.E.
|
ltems
|
Unit
|
Nominal diameter(mm)
|
|
350-400
|
450-500
|
|
Specific resistance
not over
|
Electrode
Nipple
|
μΩ.m |
5.5
5.0 |
6.0
5.0 |
|
Transverse strength
not below
|
Electrode
Nipple
|
MPa |
11.0
16.5 |
11.0
16.5 |
|
Elastic modulus not
over
|
Electrode
Nipple
|
GPa |
14.0
18.0 |
14.0
18.0 |
|
Ash content not over
|
Electrode
Nipple
|
% |
0.2 |
0.2 |
|
Bulk density not below
|
Electrode
Nipple
|
g/cm3 |
1.65
1.72 |
1.65
1.72 |
|
(C.T.E)not over
|
Electrode
Nipple
|
10-61/°C |
1.5
1.4 |
1.5
1.4 |
Allowable Current of Ultra-High Power G.E.
|
Nominal
diameters
|
Allowable current
|
Current desity |
|
mm
|
A
|
A/cm2
|
|
350
400
450
500
|
20000-30000
25000-40000
32000-45000
38000-55000
|
20-30
19-30
19-27
18-27
|
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