Description
Graphite Electrode
Graphite electrode is made from the domestic first class petroleum coke and high quality needle coke and widely used in the electric arc furnaces for production of alloy steels, metal and other nonmetallic materials, etc. The Graphite electrodes include: regular power, high power, ultra high power and square electrode. The range of diameters covers from 200mm to 800mm. Our products own the following characteristics: low electric resistivity, good electrical and thermal conductivity, high oxidation resistance, greater resistance to thermal and mechanical shock, high mechanical strength, high machining accuracy.
CNBM and its partner have 4 production bases and the annual production capacity of graphite electrodes is 60,000 MT.
Graphite electrode is mainly used in arc steel-making furnace, ore-smelting electric furnace, resistance furnace, etc., with good thermal conductivity, high temperature resistance, is widely used in metallurgy, machinery, electrical, chemical, textile, national defense and other industrial sectors. Graphite electrode is generally divided into ordinary power graphite electrode, high power graphite electrode and ultra high power graphite electrode.| Category | No. | Specifications |
| Diameter (mm) | Length (mm) |
| Regular Power Graphite Electrodes | 1 | 100 | 1800 |
| 2 | 200 | 1800 |
| 3 | 250 | 1800 |
| 4 | 300 | 1800 |
| 5 | 350 | 1800 |
| 6 | 400 | 2000 |
| 7 | 500 | 2200 |
| 8 | 600 | 2200 |
| Technical Properties of RegularPower Graphite Electrodes and nipple |
| Item | Classification | Unit | NominalDiameter (mm) |
| 75-200 | 250-300 | 400-500 |
| Gifted class | First level | Gifted class | First level | Gifted class | First level |
| A | B | A | B | A | B |
| Electric Resistivuty(<=) | Elatrode | μΩ.m | 8.0 | 9.0 | 8.0 | 9.0 | 8.0 | 9.0 |
| Nipple | 7.5 | 7.5 | 7.5 |
| Bending strength(>=) | Elatrode | Mpa | 10.0 | 10.0 | 8.0 |
| Nipple | 15.0 | 15.0 | 15.0 |
| Elastic moduluc(<=) | Elatrode | Gpa | 12.0 | 12.0 | 12.0 |
| Nipple | 14.0 | 14.0 | 14.0 |
| Bulk density(>=) | Elatrode | g/cm3 | 1.58 | 1.58 | 1.58 |
| Nipple | 1.68 | 1.68 | 1.68 |
| CTE(<=) | Elatrode | X10-6/ºC | 2.7 | 2.7 | 2.7 |
| Nipple | 2.5 | 2.5 | 2.5 |
| Ash(<=) | | % | 0.3 | 0.3 | 0.3 |
| Note: Ash content and thermal expansion coefficient are parameter indicators |
· Key testing instruments, including: specific resistor, bulk density meter, elasticmodulus meter, bending strength inspector, ash analysis meter, CTE analysis meter, etc.
· On-time instrument calibration
· On-site properties testing, including:
L-CTE,C-CTE
Specific resistance, bulk density,
Bending strength, ash content, elastic modulus
Technical Specifaication:| Item | Unit | RP | HP | UHP |
| 250-400 | 450-800 | 300-400 | 450-700 | 300-400 | 450-700 |
| Electric Resistivity | Electrode | μΩ.m | 7.5-8.6 | 7.5-8.8 | 5.5-6.8 | 5.5-7.0 | 4.6-6.0 | 4.8-6.2 |
| Nipple | 4.5-5.5 | 4.0-5.0 | 3.5-4.5 |
| Bending Strength | Electrode | Mpa | ≥8.0 | ≥11.0 | ≥11.0 |
| Nipple | ≥15.0 | ≥16.0 | ≥18.0 |
| Elastic Modulus | Electrode | Gpa | ≤9.0 | ≤11.0 | ≤13.0 |
| Nipple | ≤13.0 | ≤14.0 | ≤15.0 |
| Bulk Density | Electrode | g/cm3 | 1.55-1.65 | 1.63-1.73 | 1.65-1.75 |
| Nipple | 1.70-1.75 | 1.73-1.80 | 1.75-1.82 |
| Ash | Electrode | % | ≤0.3 |
| Nipple |
| CTE(100-600)ºC | Electrode | 10-6/ºC | 2.00-2.50 | 1.80-2.00 | 1.30-1.50 |
| Nipple | | 1.50-1.80 | 1.50-1.80 | 1.20-1.40 |
| Nomina diameter | RP | HP | UHP |
| Current Carrying Capacity | Current Density | Current Carrying Capacity | Current Density | Current Carrying Capacity | Current Density |
| in | mm | A | A/cm2 | A | A/cm2 | A | A/cm2 |
| 12 | 300 | 10000-13000 | 14-18 | 13000-17400 | 17-24 | 15000-22000 | 20-30 |
| 14 | 350 | 13500-18000 | 14-18 | 17400-24000 | 17-24 | 20000-30000 | 20-30 |
| 16 | 400 | 18000-23500 | 14-18 | 21000-31000 | 16-24 | 25000-40000 | 19-30 |
| 18 | 450 | 22000-27000 | 13-17 | 25000-40000 | 15-24 | 32000-45000 | 19-27 |
| 20 | 500 | 25000-32000 | 13-16 | 30000-48000 | 15-24 | 38000-55000 | 18-27 |
| 22 | 550 | 32000-40000 | 13-16 | 35000-55000 | 14-22 | 42000-64000 | 17-26 |
| 24 | 600 | 35000-41000 | 13-15 | 41000-61000 | 14-21 | 50000-73000 | 17-25 |
| 28 | 700 | 39000-48000 | 10-12 | 55000-82000 | 14-21 | 67000-99000 | 17-25 |
| 32 | 800 | 43000-54000 | 8-10 | / | / | / | / |
A:CNBM is a large-scale central governmental industrial group with its own manufacturing sector, research and development sector, trading sector and logistics sector.
Q:I have some special requirement about specifications.
A:We have a well-rounded product range, which endows us with the capability of applying many special specifications. Please feel free to contact us with yours.
Q:Do you accept OEM service?
A:Yes, we do.
Q:What is your delivery time?
A:It depends on the size/complexity of your order and our own production schedule. Usually we provide a faster delivery than the industry's average.
Q:What is the payment term?
A:Our payment terms are negotiable.
Q:Can I have my own logo on the product?
A:Sure, we can apply your own logo on the products according to your requirement.
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