Graphite Electrodes of HP grade is featured with oxidation resistance, low resistivity, acid and alkali corrosion, high efficiency and energy saving and low loss. HP graphite Electrodes are mainly used for high power arc steel furnace and ladle furnace for steel smelting. If you are looking for a conductor to melt steel in an arc furnace, HP graphite electrode may be your best choice! Contact RS for a free quotation.
HP Graphite Electrodes Properties
High Temperature Resistant Type: graphite melting point is 3850+50℃, boiling point is 4250℃, even ultra high temperature ignition, weight loss is small, thermal expansion coefficient is small. Graphite with increasing temperature and strengthen intensity, at 2000℃, graphite double intensity.
Electrical conductivity, thermal conductivity, conductivity of graphite nonmetallic ore is one hundred times higher than normal. Thermal conductivity than steel, iron, lead and other metal materials. The coefficient of thermal conductivity decreases with increasing temperature, and even at high temperatures, graphite turns into an insulator.
Lubrication ability, lubrication performance depends on the size of graphite flake graphite flakes, the greater the coefficient of friction is less, the better the lubrication performance.
Chemical stability: graphite at room temperature with good chemical stability, acid, alkali and corrosion resistance to organic solvent.
Ductility: graphite is good hardness, can become a very thin piece.
Thermal shock resistance: graphite when used at room temperature can withstand severe temperature changes without damage, temperature mutations, graphite Volume change is not large, will not produce failure.
Applications of HP Graphite Electrodes
HP graphite Electrodes in EAF and LF for steelmaking, as well as in electric smelting furnace for producing industrial silicon, phosphorus, etc.
arc furnace
Electric Steelmaking.
Ore Heat Furnace
Electric Resistance Furnace
Graphite electrodes HP Physical and chemical index
| SPECIFICATIONS of HP GRAPHITE ELECTRODES | |||||||
| Diameter（mm） | Length (mm) | ||||||
| Nominal Diameter | Actual Diameter | Nominal Length | Allowance | ||||
| mm | in | max | min | mm | length | Max | Min |
| 300 | 12 | 307 | 302 | 1600 1800 |
±100 | -100 | -275 |
| 350 | 14 | 357 | 352 | ||||
| 400 | 16 | 409 | 403 | ||||
| 450 | 18 | 460 | 454 | ||||
| 500 | 20 | 511 | 505 | 1600/1800/2000/2200 1800/2000/2200 1800/2000/2200/2400 1800/2000/2200 1800/2000/2200 |
±100 | -100 | -275 |
| 550 | 22 | 556 | 553 | ||||
| 600 | 24 | 613 | 607 | ||||
| TECHNICAL PROPERTIES OF HP GRAPHITE ELECTRODES | |||||
| ITEM | UNIT | MMNPDIA 300-600mm | |||
| STANDARD | SOLID SURVEY | ||||
| ELECTRODE | NIPPLE | ELECTRODE | NIPPLE | ||
| RESISTIVITY≯ | μΩm | 7.0-7.5 | 6.5 | 6.5-7.0 | 4.5 |
| BENDING STRENGH≮ | MPa | 9.8-10.5 | 14 | 12-15 | 15-18 |
| ELASTIC MODULUS≯ | GPa | 12 | 16 | 12 | 14 |
| Ash≯ | % | 0.3 | 0.3 | 0.3 | 0.3 |
| BULK DENSITY≮ | g/cm3 | 1.6 | 1.7 | 1.68-1.73 | 1.75 |
| CTE ≯ (100-600℃) | ×10-6/℃ | 2.4 | 2.2 | 2.2 | 2.0 |
| CURRENT FEATURES OF THE ELECTRODES | |||
| Nominal Diameter | Suggested Current-Carrying Capacities | Current Density | |
| mm | inch | ||
| 300 | 12 | 13000-17400 | 17-24 |
| 350 | 14 | 17400-24000 | 17-24 |
| 400 | 16 | 24000-32000 | 16-24 |
| 450 | 18 | 32000-40000 | 16-24 |
| 500 | 20 | 40000-48000 | 15-24 |
| 600 | 24 | 48000-56000 | 14-24 |
Notes: при использовании в избранном s, порекомендуйте настоящую емкость 90%, и 110% когда вы для уполовника.
| THE SURFACE QUALITY OF THE ELECTRODE | ||
| Specification Defect dimension | Nominal Diameter(mm) | |
| 300-400 | 450-600 | |
| Diameter | 20-40 | 30-50 |
| Depth | 5-10 | 10-15 |
Notes:
- There must be less than two defects or holes on the electrode surface, the maximum size of which is shown in the table above.
- There should be no transverse cracks on the electrode surface. For a longitudinal crack, the length should be less than 5% of the electrode circumference and the width between 0.3~1.0 mm.
Manufacture Of High Power Graphite Electrodes
What’s more, Rongsheng cheap graphite electrodes Supplier with best quality. HP graphite electrode is mainly used in electric arc furnace for steelmaking. Graphite products, such as high purity graphite powder, high purity graphite block, graphite blocks, graphite powder, graphite crucibles and the others is also sales in RS Graphite Electrodes Manufacturer. Besides, we can also customize a variety of shaped graphite electrodes products according to our customer’s needs and requirements. If you are in need of any graphite electrodes products, please contact RS Supplier anytime.
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