Graphite electrode types

:

* Regular power electrodes are the most commonly used type in steelmaking and other industrial applications.They have moderate electrical conductivity and thermal stability, suitable for standard electric arc furnace (EAF) operations.
* RP electrodes are cost-effective and versatile, making them ideal for general-purpose steel production.

* High power electrodes are designed to withstand higher current densities and more demanding operating conditions than RP electrodes.
* They offer superior electrical conductivity and thermal resistance, making them suitable for high-power EAFs and applications requiring rapid heating and melting rates.
* HP electrodes are often used in specialized steelmaking processes where increased productivity and efficiency are paramount.

* Ultra high power electrodes are engineered to meet the most stringent performance requirements in modern steelmaking.
* They exhibit exceptionally high electrical conductivity, thermal stability, and mechanical strength, allowing for prolonged operation at extreme temperatures and current densities.
* UHP electrodes are preferred for ultra-high-power EAFs and advanced steelmaking processes, where precise control and high-quality steel production are critical.

Graphite Electrode Nipples:

* Graphite electrode nipples are the connecting components that attach electrodes to the electrode holders in EAFs.They are typically made from the same high-quality graphite material as the electrodes and are designed to ensure secure and reliable electrical contact.
* Nipples come in various sizes and configurations to accommodate different electrode diameters and furnace designs.

Specialty Electrodes:

* Specialty graphite electrodes are tailored to specific applications outside of steelmaking, such as in the production of non-ferrous metals, silicon, and other alloys.
* These electrodes may feature customized compositions, surface treatments, or geometries to optimize performance in niche industrial processes.Specialty electrodes may include anti-oxidation coatings, enhanced thermal insulation properties, or unique shapes tailored to specific furnace designs and operating conditions.

Each type of graphite electrode offers distinct advantages and is selected based on factors such as furnace type, operating parameters, desired steel quality, and budget considerations. Manufacturers and users carefully evaluate these factors to choose the most suitable electrode type for their specific application requirements.

For more information, please visit high bulk density graphite electrode.

Graphite electrodes come in various types, each tailored to specific industrial applications and operating conditions. Here are some common types of* Regular power electrodes are the most commonly used type in steelmaking and other industrial applications.They have moderate electrical conductivity and thermal stability, suitable for standard electric arc furnace (EAF) operations.* RP electrodes are cost-effective and versatile, making them ideal for general-purpose steel production.* High power electrodes are designed to withstand higher current densities and more demanding operating conditions than RP electrodes.* They offer superior electrical conductivity and thermal resistance, making them suitable for high-power EAFs and applications requiring rapid heating and melting rates.* HP electrodes are often used in specialized steelmaking processes where increased productivity and efficiency are paramount.* Ultra high power electrodes are engineered to meet the most stringent performance requirements in modern steelmaking.* They exhibit exceptionally high electrical conductivity, thermal stability, and mechanical strength, allowing for prolonged operation at extreme temperatures and current densities.* UHP electrodes are preferred for ultra-high-power EAFs and advanced steelmaking processes, where precise control and high-quality steel production are critical.* Graphite electrode nipples are the connecting components that attach electrodes to the electrode holders in EAFs.They are typically made from the same high-quality graphite material as the electrodes and are designed to ensure secure and reliable electrical contact.* Nipples come in various sizes and configurations to accommodate different electrode diameters and furnace designs.* Specialty graphite electrodes are tailored to specific applications outside of steelmaking, such as in the production of non-ferrous metals, silicon, and other alloys.* These electrodes may feature customized compositions, surface treatments, or geometries to optimize performance in niche industrial processes.Specialty electrodes may include anti-oxidation coatings, enhanced thermal insulation properties, or unique shapes tailored to specific furnace designs and operating conditions.Each type of graphite electrode offers distinct advantages and is selected based on factors such as furnace type, operating parameters, desired steel quality, and budget considerations. Manufacturers and users carefully evaluate these factors to choose the most suitable electrode type for their specific application requirements.

1. Introduction :

UHP graphite electrode is used for steel recycling in electric arc furnace industry. Its main component is high-value needle coke, which is made of petroleum or coal tar. The graphite electrode is machined in a cylindrical shape and a threaded area is machined at each end. In this way, the graphite electrode can be assembled into an electrode column using an electrode connector.

In order to meet the requirements of higher work efficiency and lower total cost, large capacity ultra-high power arc furnace is becoming more and more popular. Therefore, UHP graphite electrodes with a diameter of more than 500 mm will dominate the market

 2. Features

• High current resistance and high discharge rate.

• Good dimensional stability and not easy to deform.

• Resistance to cracking and spalling.

• High oxidation resistance and thermal shock resistance.

• High mechanical strength and low resistance.

• High machining precision and good surface finish.

• Uniform structure, good conductivity and thermal conductivity

3. Application

Graphite electrode is widely used in the production of alloy steel, metal and other non-metallic materials.

DC electric arc furnace.

AC arc furnace.

Submerged arc furnace.

Ladle furnace.

(1) Regular  power graphite electrode

It is allowed to use graphite electrode with current density lower than 17a / cm2, which is mainly used in ordinary power electric furnaces for steelmaking, silicon smelting, yellow phosphorus smelting, etc.

(2) Oxidation resistant coated graphite electrode

Graphite electrode coated with a layer of antioxidant protective layer (graphite electrode antioxidant). Form a protective layer that can conduct electricity and resist high-temperature oxidation, reduce the electrode consumption during steelmaking (19% ~ 50%), prolong the service life of the electrode (22% ~ 60%), and reduce the electric energy consumption of the electrode. The popularization and use of this technology can bring such economic and social effects:

&#; The unit consumption of graphite electrode is less, and the production cost is reduced to a certain extent. For example, in a steelmaking plant, based on the consumption of 35pcs graphite electrodes per week and 165 refining furnaces in the primary LF refining furnace without shutdown throughout the year, 373pcs graphite electrodes can be saved every year after the graphite electrode oxidation resistance technology is adopted

(153 tons) electrode, calculated at USD per ton of ultra-high power electrode per year, USD 459,000 can be saved.

&#; The graphite electrode consumes less power, saves the unit steelmaking power consumption, saves the production cost and saves energy!

&#; Because the graphite electrode is changed less times, the amount of labor and risk coefficient of operators are reduced, and the production efficiency is improved.

&#; Graphite electrode is a low consumption and low pollution product. Today, when energy conservation, emission reduction and environmental protection are advocated, it has very important social significance.

This technology is still in the research and development stage in China, and some domestic manufacturers have also begun to produce it. It has been widely used in Japan and other developed countries. At present, there are also companies specializing in importing this anti-oxidation protective coating in China.

(3) High power graphite electrode. Graphite electrode with current density of 18 ~ 25A / cm2 is allowed to be used, which is mainly used in high-power electric arc furnace for steelmaking.

(4) Ultra high power graphite electrode.  UHP Graphite electrodes with a current density greater than 25A / cm2 are allowed. It is mainly used for ultra-high power steelmaking electric arc furnace.

4. Nipple

3TPI/T4L/T4N Or Customized

 5.  Product Parameters

Graphite Electrode More specification and Details : 

For following just for your reference  :

Items

Regular power(RP)

High power(HP)

Ultrahigh power(UHP)

&#;200-300

&#;350-600

&#;700

&#;200-400

&#;450-600

&#;700

&#;250-400

&#;450-600

&#;700

ResistanceμΩm&#;Max&#;

Electrode

7.5

8.0

6.5

7.0

5.5

5.5

Nipple

6.0

6.5

5.0

5.5

3.8

3.6

BulkDensityg/cm3&#;Min&#;

Electrode

1.53

1.52

1.53

1.62

1.60

1.62

1.67

1.66

1.66

Nipple

1.69

1.68

1.73

1.72

1.75

1.78

BendingStrengthMpa&#;Min&#;

Electrode

8.5

7.0

6.5

10.5

9.8

10.0

11.0

11.0

Nipple

15.0

15.0

16.0

16.0

20.0

20.0

Young&#;smodulusGpa&#;Max&#;

Electrode

9.3

9.0

12.0

12.0

14.0

14.0

Nipple

14.0

14.0

16.0

16.0

18.0

22.0

Ash%&#;Max&#;

Electrode

0.5

0.5

0.3

0.3

0.3

0.3

Nipple

0.5

0.5

0.3

0.3

0.3

0.3

CTE(100-600&#;)×10-6/&#;

Electrode

2.9

2.9

2.4

2.4

1.5

1.4

Nipple

2.8

2.8

2.2

2.2

1.4

1.2

Standard Sizes of Electrode :If there are special specification requirements,both sides consult supply & demand.

For more detailed Sizes and Specs : Uhp Graphite electrode , Graphite electrodes , Hp Graphite Electrode , Rp Graphite electrode           φ200mm-700mm   Length mm -mm 

Standard sizes of electrode

Specifications(inch)

Allowable Diameter(mm)

Allowable Length(mm)

Nominal Diameter

Max.

Min.

Nominal Length

Max.

Min.

6

150

154

151

8

200

205

200

9

225

230

225

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10

250

256

251

12

300

307

302

14

350

357

352

16

400

409

403

18

450

460

454

20

500

511

505

22

550

562

556

24

600

613

607

28

700

714

708

Current Carrying Capacity for Graphite Electrode:

Nominal Diameter(mm)

Regular Power

High Power

Ulra High Power

Current Load&#;A&#;

Current Density&#;A/cm2)

Current Load&#;A&#;

Current Density&#;A/cm2)

Current Load&#;A&#;

Current Density&#;A/cm2)

200

-

15-21

-

18-25

&#;&#;&#;&#;

&#;&#;&#;&#;

225

-

15-21

-

18-25

&#;&#;&#;&#;

&#;&#;&#;&#;

250

&#;

14-20

&#;

18-25

&#;&#;&#;&#;

&#;&#;&#;&#;

300

&#;

14-18

&#;

17-24

&#;

20-30

350

&#;

14-18

&#;

17-24

&#;

20-30

400

&#;

14-18

&#;

16-24

&#;

19-30

450

&#;

13-17

&#;

15-24

&#;

19-27

500

&#;

13-16

&#;

15-24

&#;

18-27

550

&#;

13-16

&#;

15-23

&#;

17-26

600

&#;

13-16

&#;

15-23

&#;

17-26

700

&#;

12-15

&#;

13-18

-

17-24

 

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