550-700mm HP graphite electrode,HP Graphite Electrode
,,,
Electric resistivity : 5.5-7.0
Bending strength: >=8.5
Elastic Modulus:<=13
Bulk density:1.62-1.70
Ash:<=0.3
CTE:1.80-2.20
High power graphite electrodeis a graphite electrode with allowable current density between 18-25A/cm2.HP graphite electrodemainly used in high power steelmaking electric arc furnace.
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PhysicalandChemicalIndexofHignPowerGraphiteElectrode: |
||||
|
Item |
Unit |
HP |
||
|
300～500 |
550～700 |
|||
|
ElectricResistivity |
Electrode |
uΩ.m |
||
|
Nipple |
||||
|
BendingStrength |
Electrode |
MPa |
≥10.0 |
≥8.5 |
|
Nipple |
≥18.0 |
|||
|
ModulusofElasticity |
Electrode |
GPa |
≤13.0 |
|
|
Nipple |
≤15.0 |
|||
|
BulkDensity |
Electrode |
g/cm3 |
||
|
Nipple |
||||
|
AshContent |
Electrode |
% |
≤0.3 |
|
|
Nipple |
||||
|
TheCoefficientofThermalExpansion(CTE) |
Electrode |
10-6/℃ |
||
|
Nipple |
||||
|
HighPowerGraphiteElectrodeCurrentCarryingCapacity |
|||
|
NorminalDiameter |
HP |
||
|
CurrentCarryingCapacity |
CurrentDensity |
||
|
inch |
mm |
A |
A/cm2 |
|
12 |
300 |
13000～17400 |
17～24 |
|
14 |
350 |
17400～24000 |
17～24 |
|
16 |
400 |
21000～31000 |
16～24 |
|
18 |
450 |
25000～40000 |
15～24 |
|
20 |
500 |
30000～48000 |
15～24 |
|
22 |
550 |
34000～53000 |
14～22 |
|
24 |
600 |
38000～58000 |
13～21 |
|
28 |
700 |
45000～72000 |
12～19 |
|
32 |
800 |
／ |
／ |
|
ToleranceofGraphiteElectrodeDiameterandLength（mm) |
|||||
|
NominalDiameter |
Acturaldiameter |
Length |
|||
|
in |
mm |
max |
min |
Blacksurfacemin |
|
|
12 |
300 |
307 |
302 |
299 |
1800/2000 |
|
14 |
350 |
358 |
352 |
349 |
1800/2000/2200 |
|
16 |
400 |
409 |
403 |
400 |
1800/2000/2200 |
|
18 |
450 |
460 |
454 |
451 |
1800/2000/2200 |
|
20 |
500 |
511 |
505 |
502 |
2000/2200/2400 |
|
22 |
550 |
562 |
556 |
553 |
2000/2200/2400/2700 |
|
24 |
600 |
613 |
607 |
604 |
2200/2400/2700/3000 |
|
28 |
700 |
714 |
710 |
707 |
2200/2400/2700/3000 |
|
29 |
800 |
816 |
812 |
809 |
2200/2400/2700/3000 |
|
PermissibleDeviationofGraphiteElectrodeLength(mm) |
||||
|
NominalLength |
StandardDeviation |
ShortLengthDeviation |
||
|
max |
min |
max |
min |
|
|
1800 |
+100 |
-100 |
-100 |
-275 |
|
2000 |
+100 |
-100 |
-100 |
-275 |
|
2200 |
+100 |
-100 |
-100 |
-275 |
|
2400 |
+100 |
-100 |
-100 |
-275 |
|
2700 |
+200 |
-150 |
-150 |
-275 |
|
3000 |
+200 |
-150 |
-150 |
-300 |
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