How To Distinguish The Types Of Graphite Electrodes?
Leave a message
How to distinguish the types of graphite electrodes?
(1) Ordinary power graphite electrode. Graphite electrodes with a current density lower than 17A/cm2 are allowed to be used. They are mainly used in ordinary power electric furnaces for steelmaking, silicon refining, yellow phosphorus refining, etc.
|
|
Unit
|
Nominal Diameter
|
||||||
|
UHP UIta-High-Power
|
HP Superstrong
|
RP Conventional Power
|
||||||
|
≤Φ400
|
≥Φ450
|
≤Φ400
|
≥Φ450
|
≤Φ300
|
≥Φ350
|
|||
|
Resistivity
|
Electrode
|
ΜΩ-m
|
≤5.5
|
≤6.5
|
≤8.5
|
|||
|
Nipple
|
≤4.5
|
≤5.5
|
≤6.5
|
|||||
|
Flexural Strength
|
Electrode
|
MPa
|
≥11.0
|
≥10.5
|
≥9.8
|
≥8.5
|
≥7.0
|
|
|
Nipple
|
≥20.0
|
≥16.0
|
≥15.0
|
|||||
|
Elastic Modulus
|
Electrode
|
GPa
|
≤14.0
|
≤12.0
|
≤9.3
|
|||
|
Nipple
|
≤18.0
|
≤16.0
|
≤14.0
|
|||||
|
Oensity
|
Electrode
|
g / cm3
|
≥1.66
|
≥1.67
|
≥1.62
|
≥1.6
|
≥1.53
|
≥1.52
|
|
Nipple
|
≥1.75
|
≥1.73
|
≥1.69
|
|||||
|
Coefficient of Thermal Expansion
|
Electrode
|
10-6 / ℃
|
≤1.5
|
≤2.4
|
≤2.9
|
|||
|
Nipple
|
≤1.4
|
≤2.2
|
≤2.8
|
|||||
|
ASH
|
％
|
≤0.3
|
≤0.3
|
≤0.5
|
||||
|
Note：1.Koefitsient ash content and thermal expansion as the reference index the coefficient of thermal
expansion(100℃~600℃),custom manufacturing |
||||||||
(2) Anti-oxidation coated graphite electrode. Graphite electrode with a layer of anti-oxidation protective layer coated on the surface forms a protective layer that is both conductive and resistant to high-temperature oxidation, reducing electrode consumption during steelmaking.
(3) High power graphite electrode. Graphite electrodes with a current density of 18 to 25A/cm2 are allowed to be used. They are mainly used in high power electric arc furnaces for steelmaking.
(4) Ultra-high power graphite electrode. Graphite electrodes with a current density greater than 25A/cm2 are allowed to be used. They are mainly used in ultra-high power steelmaking electric arc furnaces.
