RP, HP and UHP Type Graphite Electrode for Steel Mill

Ref Price:
$10.00 - 100.00 / m.t.
Loading Port:
Shanghai
Payment Terms:
TT or LC
Min Order Qty:
10 m.t.
Supply Capability:
100000 m.t./month

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Product Description:

                            TECHNICAL PROPERTIES OF GRAPHITE ELECTRODE

1.Physical and chemical index

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)℃

Electrode

10-6/℃

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

 

2.Recommended current carrying capacity

Nominal Diameter

(mm)

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

1000-13000

14-18

13000-174000

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

/

/

/

/

picutre

FAQ

①How about your company?

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel,is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

②How to guarantee the quality of the products?

We have established the international advanced quality management system,every link from raw material to final product we have strict quality test;We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.


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Q:What does graphite electrode GSK mean?
Graphite board material is GSK, GSK refers to model specifications
Q:How about graphite electrode high-temperature oxidation resistant coating?
Heat resistant coating is generally able to withstand 300 degrees below the temperature, commonly used aluminum heat-resistant paint, high temperature resistance can withstand higher temperatures, such as 800 degrees or more, commonly used silicone heat-resistant paint
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:Why graphite can be used as conductive material?
Widely used as electrode, graphite, carbon brush, carbon nanotubes, mercury rectifier cathode, graphite gasket, telephone parts, TV tube coating and so on in the electrical industry. The most widely used in the smelting of graphite electrode, alloy steel, iron alloy, graphite electrode, the strong current through the melting zone, the arc electrode into the electric furnace, the electrical energy into heat, the temperature rises to around, so as to achieve the purpose of melting or reaction. In addition, in the electrolysis of metal, magnesium, aluminum and sodium, the anode of the electrolytic cell is also made of graphite electrode. The resistance furnace used for the production of rigid sand is also made of graphite electrode as the conducting material of the furnace head.
Q:Why is graphite conductive electrode oxidized?
Graphite electrode uses petroleum coke (carbon), pitch coke (carbon) as granule material
Q:Why should supercapacitors use graphite as electrode material?
There are some similarities between the supercapacitor and the lithium-ion battery technology...... Typing and super capacitor is divided into three kinds: organic (carbon based, including now speculation is very powerful, Shi Moxi) principle is potential polarization of electrolyte, electrolyte and the positive and negative ion conductive material on the electron positron forming an electric double layer, high porous carbon materials.
Q:Jiqiu conductive graphite electrode, how to compare with copper is relatively large resistance value?
Look at what kind of graphite electrode you need. Now, the resistivity of ordinary power graphite electrode in our factory is 7.5-8.5. It is not clear that the graphite electrode is dipped in 6--7.3. copper
Q:Graphite graphite graphite graphite electrode what is the use?
Of course all conductive graphite gray, conductive powder is used for professional conductive, the conductivity is different, in order to achieve its electrical resistance value, the graphite powder of different particle by the ratio to reach the ideal value of resistance. Graphite powder is pure graphite powder, requirements of mesh consistent, high purity.
Q:How can the graphite powder be processed into high quality carburizing agent? Thank you
If you are through the material can also be screened and then sold, usually 1-5 of the particle size, fine powder can only add adhesive column
Q:The reason why graphite is used as electrode
Graphite has good thermal stabilityThe softening point of copper in 1000 degrees, easily deformed by heat, the melting point of graphite is 3850 + 50 DEG C, the boiling point of 4250 DEG C, even after the ultra high temperature arc ignition, the weight loss is very small, the thermal expansion coefficient is small. The strength of graphite increases with the increase of temperature, and the strength of graphite is doubled at 2000 degrees centigrade. In comparison, the thermal expansion coefficient of graphite material is only 1/30 of copper material.

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