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High Density Graphite Electrodes
High Density Graphite electrodes are manufactured with the
high quality raw materials, including the petroleum cokes
produced in Fushun No.2 Petroleum Factory
and the coal tar pitch produced in Anshan,according to the
same productive technology as HP electrodes. The production
processes are including calcining, dosing,kneading, extruding,
baking, high impregnation, rebaking, graphitizing, machining
etc. And electrodes are matched with HP nipples, manufactured
with 80% needle pitch cokes imported from Japan, according
to the technology of triplicate impregnation and quadruple
baking.
Specification of Impregnated(High Density) G.E.
|
Item
|
Unit
|
Nominal
Diameter (mm)
|
|
250-350
|
400-500
|
|
Specific
resistance
Not over
|
Electrode
Nipple
|
μΩ.m |
7.0 6.0 |
7.5
6.0 |
|
Transverse
strength.
Not below
|
Electrode
Nipple
|
MPa |
10.0 14.0 |
9.0
14.0 |
|
Modulus
elasticity
Not over
|
Electrode
Nipple
|
GPa |
12.0 14.0 |
12.0
14.0 |
|
Bulk Density
Not below
|
Electrode
Nipple
|
g/cm3 |
1.60 1.70 |
1.60
1.70 |
|
Ash not
over
|
Electrode
Nipple
|
% |
0.2 |
0.2 |
|
C.T.E
not over
|
Electrode
Nipple
|
10-61/°C |
2.4 2.2 |
2.4
2.2 |
Allowable Current of Impregnated(High Density)
G.E.
|
Nominal Diametermm
|
A llowable curnent
A
|
Current Density
A/cm2
|
|
75
100
130
150
200
250
300
350
400
450
500
|
1050～1450
1700～2500
2500～3700
3300～4800
6000～8200
8500～11500
11400～15800
15400～22000
19200～28700
23700～33300
27000～40000
|
23～32
22～31
19～28
18～27
18～25
17～23
16～22
16～22
15～22
14～21
14～20
|
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