Premium Raw Material System
Imported Needle Coke Dominant
Uses UHP-grade needle coke from Koppers (USA)/Mitsubishi Chemical (Japan) with CTE ≤1.0×10⁻⁶/℃
Coal tar pitch binder from RÜTGERS (Germany), softening point ≥110℃
Ultra-low impurities: Ash content ≤0.3%, sulfur ≤0.5%
World-Class Production Equipment
|
Process Stage |
Core Equipment |
Technical Specifications |
|
Kneading |
Eirich intensive mixer (Germany) |
Mixing uniformity deviation ≤0.5% |
|
Extrusion |
Kobe Steel 3000-ton vertical press (Japan) |
Green density ≥1.78g/cm³ |
|
Baking |
Fives 36-chamber ring furnace (France) |
Baking curve precision ±5℃ |
|
Graphitization |
Acheson furnaces (1200kVA each) |
Max 3000℃, temperature uniformity ±15℃ |
|
Precision Machining |
SW CNC electrode center (Germany) |
Thread concentricity ≤0.05mm |
Extreme Performance Parameters (UHP Grade)
Bulk density: ≥1.72g/cm³ (actual 1.74-1.78)
Resistivity: ≤4.8μΩ·m (industry standard ≤5.5)
Flexural strength: ≥22MPa (maintains ≥20MPa at 700mm)
Elastic modulus: 8.5-9.2GPa (optimal thermal shock balance)
Current capacity: Stable operation at 45-50A/cm²
Breakthrough in Extra-Long Dimensions
Single-piece length up to 3.6m (700mm diameter)
Segmented gradient graphitization eliminates axial performance variation
End-reinforced design solves large-diameter nipple breakage issues
High-End Applications
Global Top-Tier Metallurgy Projects
EAF steelmaking: For 400T super EAFs (e.g., Baowu Group, POSCO)
Titanium alloy smelting: Exclusive electrodes for VSMPO-AVISMA aerospace-grade titanium
New Energy Core Processes
Monocrystalline silicon furnaces: Replaces carbon felt heaters, purity improved by 2 orders
Lithium anode graphitization: Used in SGL Group's 32m continuous graphitization lines
Advanced Material Synthesis
High-purity graphene: Core component in Haydale plasma reactors (UK)
Nuclear-grade graphite: AREVA nuclear fuel rod molding material (France)
Quality Assurance System
Full-process MES traceability (raw coke batch to final product ID)
ZEISS SEM for microstructure porosity analysis
Laser-engraved unique ID on each electrode for real-time quality tracking
Technical Service Support
On-site installation: Hydraulic torque wrench systems (1000-1200N·m)
Furnace analytics: Co-developed electrode wear AI early-warning system with Siemens
Global emergency supply: Bonded warehouses in Dubai/Rotterdam/Houston
Products Parameters
|
Item |
Unit |
Diameter 550(556-562)Mm |
|||
|
UHP Graphite Electrode |
Nipple |
||||
|
Guaranteed |
Typical |
Guaranteed |
Typical |
||
|
Resistivity ≤ |
UΩ*M |
6.3 |
5.0-6.0 |
5.3 |
3.8-4.5 |
|
Flexural Strength≥ |
MPA |
10.5 |
11.0-13.0 |
20 |
20-25 |
|
Young's Modulus≤ |
GPA |
14 |
8-12 |
20 |
12-16 |
|
Bulk Density≥ |
G/CM3 |
1.66 |
1.68-1.73 |
1.75 |
1.76-1.82 |
|
CTE(100 ℃-600℃) ≤ |
10-6/℃ |
1.5 |
1.3-1.5 |
1.4 |
1.0-1.3 |
|
ASH ≤ |
% |
0.5 |
0.2-0.4 |
0.5 |
0.2-0.4 |
Note：We can provide lengths of 2000/2200/2400mm for UHP500 graphite electrodes. Of course, we can also customize the length according to customer requirements.
Recommended Current Load Of Electrode
|
Grade |
Inch |
Nominal Dia |
Allowable current |
Current density |
||
|
AC |
DC |
AC |
DC |
|||
|
UHP Graphite Electrode |
10 |
250 |
10000-13000 |
- |
14-18 |
- |
|
12 |
300 |
13500-20000 |
- |
14-18 |
- |
|
|
14 |
350 |
20000-32000 |
- |
20-32 |
- |
|
|
16 |
400 |
25000-41000 |
- |
20-32 |
- |
|
|
18 |
450 |
32000-49000 |
- |
20-30 |
- |
|
|
20 |
500 |
40000-60000 |
- |
20-30 |
- |
|
|
22 |
550 |
45000-68000 |
49000-78000 |
18-28 |
20-32 |
|
|
24 |
600 |
52000-81000 |
58000-93000 |
18-28 |
20-32 |
|
|
26 |
650 |
60000-85000 |
64000-100000 |
18-28 |
20-32 |
|
|
28 |
700 |
71000-100000 |
79000-120000 |
18-27 |
20-30 |
|
|
30 |
750 |
82000-123000 |
91000-135000 |
18-27 |
20-30 |
|