Graphite Electrode/High Purity CNBM Graphite

Graphite Electrode/High Purity CNBM Graphite System 1

Graphite Electrode/High Purity CNBM Graphite

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 0 m.t.

Supply Capability:: 100000 m.t./month

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Packaging & Delivery

Packaging Details:	standard export wooden backage
Delivery Detail:	15-30 days after confirming the contract

Product Description

Graphite electrode is made from the domestic first 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, super high power, ultra high power and square electrode. The range of diameters covers from 200mm to

700mm. Our products own the following characteristics: low electric resistance, good electric and

thermal conductivity, high oxidation resistance, greater resistance to thermal and mechanical shock, high mechanical strength, high machining accuracy.

Physical and chemical index

Item		Unit	Nominal Diameter(mm)
			YB/T4088-2000 Industry Standard		Typical Values
			300-400	450-550	350-550
Resistance	Electrode	ohm	≤6.2	≤6.5	4.6-6.2
Resistance	Nipple	ohm	≤5.5	≤5.5	3.5-4.5
Bending Strength	Electrode	Mpa	≥10.5	≥10.0	≥11.0
Bending Strength	Nipple	Mpa	≥16.0	≥16.0	≥18.0
Elastic Modulus	Electrode	Gpa	≤14.0	≤14.0	≤13.0
Elastic Modulus	Nipple	Gpa	≤18.0	≤18.0	≤17.0
Density	Electrode	g/cm3	≥1.65	≥1.64	1.65-1.72
Density	Nipple	g/cm3	≥1.72	≥1.70	1.75-1.82
Ash content	Electrode	%	≤0.3	≤0.3	≤0.3
Ash content	Nipple	%	≤0.3	≤0.3	≤0.3
CTE(100-600)	Electrode	10-6/C	≤1.5	≤1.5	1.20-1.40
CTE(100-600)	Nipple	10-6/C	≤1.4	≤1.4	1.10-1.30

Recommended current carrying capacity

Nominal Diameter		YB/T4088-2000 Industry Standard		Typical Values
		Current Carrying Capacity	Currant Density	Electrical Arc Furnace
		Current Carrying Capacity	Currant Density	Current Carrying	Current Density
in	mm	A	A/cm2	A	A/cm2
14	350	20000-30000	20-30	24000-33000	25-34
16	400	25000-40000	19-30	31000-44000	24-34
18	450	32000-45000	19-27	36000-49000	22-30
20	500	38000-55000	18-27	42000-60000	21-30
22	550	42000-62000	17-25	50000-70000	20-28

Do you know our material of the graphite electrode?

The regular power graphite electrode is made from petroleum coke with a little pitch, which meets

the state standards YB/T4088-2000

The high power graphite electrode is made form 70% petroleum coke and 30% imported needle

coke, which meets the state standards YB/T4089-2000

The ultra high power graphite electrode is made form 100% imported needle coke, which meets

the state standards YB/T 4090-200

Note: Needle coke is one kinds of very important material to produce the high grade graphite

electrode,which is rapid development in carbon graphite industry. The needle coke own the

following characteristics: low electric resistance, low dilatation coefficient, good electric and

thermal conductivity,high oxidation resistance, greater resistance to thermal and mechanical

shock, high mechanical strength, high machining accuracy, low consume.

Picture

Graphite Electrode/High Purity CNBM Graphite

Q:Classification, uses and manufacturers of graphite electrodes: Classification of graphite electrodes:(1) common power graphite electrode (RP), (2) high power graphite electrode (HP), (3) quasi ultra high power graphite electrode (SHP), (4) ultra high power graphite electrode (UHP) Note: poly carbon classification method

Q:MITSUBISHI machine graphite electrode processing, how does not accumulate carbon?: The three is difficult cold start, is sparking difficult, not easy car, and finally the combustion chamber carbon Yan will cause a heavy cylinder knock, low speed and acceleration noise, causing damage to the piston and crankshaft, causing the engine temperature which can seriously affect the automobile safety. Emission standards exceeded, not only through the annual inspection, but also directly aggravate the pollution of the environment

Q:What is the application of wire cutting with graphite electrode?: Greatly shorten the preparatory time of mechanical processing, and improve the level of automation of the whole process of machining, and also enhance the ability of the manufacturing system to adapt to changes in production conditions.

Q:The original battery is not necessary to form the electrode potential? Why can we use graphite as electrode only? No potential difference.: A galvanic cell is a device that converts chemical energy into electrical energy. Electron transfer not by oxidizing and reducing agents to complete the effective collision between, but the reducing agent loss electron oxidation reaction occurs in the anode, the electron transport to the anode through the external circuit, the oxidant to the anode electron reduction reaction, so as to complete the transfer of reductant and oxidant electrons.

Q:Electrolysis of CuCl2 solutions with graphite electrodes: After energization, electrolysis occurs, not ionizationIonization does not require energization, and can occur in aqueous or molten state.

Q:What are the factors affecting the service life of graphite electrode in ultra high power arc furnace?: The ultra high power graphite electrodes produced in China are 300mm, 350mm, 400mm, 450mm, 550mm, 600mm, 650mm, 500mm and 700mm, with lengths of 1600mm, 1800mm, 2000mm, 2200mm, 2400mm and 2700mm.

Q:Graphite powder produced by graphite electrode and what we usually call graphite is a kind of thing?: Graphite electrode is mainly in petroleum coke, coke as raw material

Q:Synthesis techniques of carbon nanotubes: Laser evaporation is an effective method for the preparation of single-walled carbon nanotubes. Single walled carbon nanotubes and single-walled carbon nanotube bundles were prepared by evaporation of carbon targets doped with Fe, Co, Ni or their alloy by high energy CO2 laser or Nd/YAG laser. The diameter of the tubes can be controlled by laser pulses. The researchers found that the shorter the laser pulse interval, the higher the yield of SWNTs, while the SWNT structure was not affected by the pulse interval time. Using CO2 laser evaporation method for single wall carbon nanotubes at room temperature, if the use of fast imaging technology and emission spectra can be observed in morphology of smoke and carbon containing debris flow evaporation in argon, the diagnostic technology makes the growth process of single wall carbon nanotubes tracking possible. The main disadvantage of laser evaporation (ablation) is that the purity of single walled carbon nanotubes is low and easy to entangle.

Q:How to improve the efficiency of graphite electrode milling, please tell me: There are many factors that determine the need to continue producing graphite electrodes, so high-speed machining has become a key manufacturing process in the die manufacturing industry. Compared with the time required for the milling of graphite electrodes, the processing of high rigidity hard steel still takes longer. When milling dies, cavities, and complex 3D surfaces on hard steel, radial runout errors and tool deviations often result in fracture of the tool. When the tool is broken, it will not only stop the continuous processing of the steel, but also affect the quality of the product, which will lead to the scrap of the parts and the waste of the material.

Q:Graphite can be used in acid towers in chemical plants because of graphite: The popularization and use of this technology can bring about such economic and social effects: (1) the consumption of graphite electrode units is less, and the production cost is reduced. For example, a steel plant, according to the annual production level did not occur in LF refining furnace 35 week graphite electrode, refining furnace 165 consumption calculation, using anti oxidation technology of graphite electrode, graphite electrode can save 373 per year(153 tons) electrode, each year ultra high power electrode 16900 yuan computation, can save 2 million 585 thousand and 700 yuan rmb.

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