HP Graphite Electrode mainly uses petroleum coke, needle coke as raw material, coal tar as binder, is made after calcination, ingredients, kneading, pressing, roasting, graphitization, machining. It is featured with oxidation resistance, low resistivity, acid and alkali corrosion, high efficiency and energy saving and low loss. HP Graphite Electrode is mainly used for high-power electric arc furnace and ladle furnace to steelmaking. If you are looking for a conductor for steelmaking in arc furnace, HP graphite electrode can be your choice! Contact us for free quotation.

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HP Graphite Electrode Properties

High temperature resistant type: graphite melting point is 3850+50℃, boiling point is 4250℃, even by the ultra high temperature are ignition, weight loss is small, thermal expansion coefficient is smal. Graphite with temperature increase and strengthen the intensity, at 2000℃, the intensity of graphite double. Conductive, thermal conductivity, the conductivity of graphite nonmetalliferous ore is one hundred times higher than normal. Thermal conductivity than steel, iron,lead and other metal materials. Coefficient of thermal conductivity decreases with temperature rise, and even at high temperature, graphite into insulator. Lubricity, lubrication performance depends on the size of the graphite flake graphite, flake, the greater the friction coefficient is smaller, the better the performance of lubrication. Chemical stability: graphite at room temperature with good chemical stability, acid,alkali and corrosion resistance to organic solvent. Plasticity: graphite good toughness, can become very thin slice. Thermal shock resistance: graphite when used at room temperature can withstand the severe changes of temperature without damage, temperature mutations, graphite volume change is not big, won’t produce crack.

HP Graphite Electrode Applications

HP Graphite electrodes are used in EAF and LF for steel making, as well as in electric smelting furnace for producing industrial silicon, phosphorus, etc.

Electric Arc Furnaces

Electric Furnace Steelmaking.

Ore Heat Furnace

Electric Resistance Furnace

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HP Graphite Electrode Physical and Chemical Index

Specifications and Allowance

SPECIFICATIONS AND ALLOWANCE 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

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Technical Properties

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

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Suggested Current-Capacities

SUGGESTED CURRENT-CAPACITIES OF 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

Remarks: when used in elect s, recommend current capacity is 90% , and 110% when you for ladle.

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Electrode Surface Quality

ELECTRODE SURFACE QUALITY Specification

Defect dimension Nominal Diameter(mm) 300-400 450-600 Diameter 20-40 30-50 Depth 5-10 10-15

Remarks:

There should be less than two defects or holes on the electrode surface, the max size of which is mentioned in the above chart.

There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width in between 0.3~1.0mm.

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HP Graphite Electrodes Manufacturer

All kinds of high quality graphite electrode products sales in RS Kiln Refractory Company, such as regular power/RP graphite electrode, high power/HP graphite electrode, super high power/SHP graphite electrode, ultra high power/UHP graphite electrode, graphite product, high purity graphite powder, high purity graphite block, graphite blocks, graphite powder, graphite crucibles and other graphite related products. Besides, we can also customize a variety of shaped graphite electrodes products according to our customer’s needs and requirements.

What’s more, Rongsheng Refractory offers cheap graphite electrodes with the best quality. HP graphite electrodes are mainly used in the electric arc furnace for steel making. There are many refractory news and refractory products information on our web. Welcome to view our website to know more details. You can read more refractory products and know more refractory materials information. Because our website has many kinds of refractory news and industry news. you can know more kinds of refractory information from our website. If you need it, please contact me anytime.



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