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Home > Products > Power Supply And Transformer > High power graphite electrod ⌽ 457 with 241T4L

High power graphite electrod ⌽ 457 with 241T4L

High power graphite electrod ⌽ 457 with 241T4L

    Payment Type: L/C,T/T,Paypal,Money Gram,Western Union
    Terms of Trade: FOB,CFR,CIF,EXW
    Delivery Time: 15 Days
    Packaging: Wooden cases with steel strips or according to customer's reqirement
    Productivity: 30000MT per annum
    Brand: CG
    Transportation: Ocean,Land,Air
    Place of Origin: China
    Supply Ability: 3000 tons each month
    Certificate: SGS
    HS Code: 8545110000
    Port: Tianjin,Qingdao,Lianyungang

Basic Info

Model No.: ⌽ 457

Product Description

1.Graphite electrod overview

High power graphite electrode is produced by high quality petroleum coke which was made in Petro China Fushun petrochemical production, the needle coke imported from Japan and modified middle temperature pitch as raw material, according to the high power graphite electrode production process , the process are calcination, ingredients, kneading, molding, baking, high pressure impregnation, the second roasting, graphitization and machining , the nipples are made by two times impregnation and three times baking , the material is needle coke imported from Japan .

Graphite Electrode

2. GRAPHITE ELECTRODE – High Mechanical Strength & Machining Accuracy

Graphite Electrodes, with high electrical conductivity and low electrical resistance, are the key consumables for EAF steelmaking.

3. WHAT IS GRAPHITE ELECTRODE?

Graphite electrode, a conductor that releases electric energy in the form of an electric arc, is used to heat and melt the steel scraps in an electric arc furnace. They are currently the only products with high electrical conductivity and are able to maintain extremely high heat generation in this demanding environment. With the growing demand for quality steel in the aerospace, automotive and electronics industries, graphite electrodes are also becoming increasingly popular.

4. WHY GRAPHITE ELECTRODE?

Graphite material has better electrochemical stability. This type of electrode has low loss ratio.

Graphite electrode is easy to process and the processing speed is obviously faster than that of copper electrode.

Graphite is light in weight and has good thermal & electrical conductivity.

Graphite electrode, with above irreplaceable performance advantages, plays an indispensable role in the high temperature manufacturing field such as iron and steel smelting, electrolytic aluminum, ferroalloy, calcium carbide, industrial silicon and yellow phosphorus smelting.

graphite electrode nipples

5. CLASSIFICATION OF GRAPHITE ELECTRODES

According to the electric furnace capacity, transformer power load, the difference of raw materials used in the electrodes production and the physical & chemical indexes of finished electrodes, the graphite electrodes are divided into three types:

UHP GRAPHITE ELECTRODE.

It is made of high-grade needle coke and treated with Lengthwise Graphitization (LWG). The graphitization temperature can be up to 2800 °C – 3000 °C. Finished products have lower electrical resistance & linear expansion, good thermal shock resistance and allow a larger current density.

HP GRAPHITE ELECTRODE.

It adopts quality petroleum coke or low grade needle coke as raw material. Its physical and mechanical properties are higher than RP graphite electrode such as lower electrical resistance and allowing a greater current density.

RP GRAPHITE ELECTRODE.

Ordinary grade petroleum coke is adopted for production. This type of graphite electrode is treated with low graphitization temperature. The allowable current density is lower than HP graphite electrode's. Regular power graphite electrodes are specified with allowable current density less than 17 A/cm2.

graphite electrode


6. MAIN APPLICATIONS

EAF STEELMAKING.

EAF steelmaking is the main application field of graphite electrode. The output of electric arc furnace steel in China accounts for about 18% of crude steel. 70% – 80% of consumption of the graphite electrode are used in EAF steelmaking. In EAF steelmaking, the graphite electrode is used to conduct electric current into the furnace. And the high temperature heat source for smelting is generated by arcing between the electrode and steel scraps.

SUBMERGED ARC FURNACE

Graphite Electrodes HP dia400mm for DC arc furnace is mainly used in the production of industrial yellow phosphorus and silicon. It is required to use a graphite electrode for a submerged electric furnace with a high current density. It takes about 100 kg of graphite electrode to produce 1 t of silicon, and about 40 kg of graphite electrode to produce 1 t of yellow phosphorus.

LF (LADLE FURNACE)

The ladle furnace is set up in the EAF steelmaking plant. After the slag is mixed out, ladle furnace is used to complete the task of further reduction and refining. Commonly, graphite electrodes are used for three-phase AC ladle furnaces.

UHP Graphite Electrode


7. MAIN FACTORS AFFECTING GRAPHITE ELECTRODE CONSUMPTION IN EAF STEELMAKING

The top reasons of loss and consumption of graphite electrodes are overload and timeout operation.

Low quality or improper proportion of scrap leads to poor slagging effect and prolong smelting time.

The increased feeding times lead to higher probability of electrode bottom damage and fracture.

Electric furnace Power Supply equipment does not match the electrode specifications.

The selection of power curve & gear, the voltage & current control of starting and stabilizing arcs, the use of long, medium and short arcs and the configuration of water cooling system are important to the service life and consumption of electrodes.

The quality of the graphite electrode itself affects the consumption ratio. Nowadays, the smelting and process of electric arc furnaces have higher requirements on the anti-oxidation performance and thermal shock resistance of graphite electrodes. Moreover, the high consumption caused by fluctuations in quality is greatly concerned by users. Therefore, the homogeneity and stability of graphite electrode are the most important factors to determine the consumption.

8.Produts Inspecification:

Properties

UHP

HP

RP

Φ300-φ500

Φ550-φ800

Φ300-φ800

Φ300-φ800

Resistivity (uΩm max)

Electrode

4.8-5.8

4.6-5.8

5.8-6.6

7.0-10.0

Nipple

3.5-4.0

3.5-4.0

3.5-4.0

4.0-4.5

Modulus of rupture

(Mpa)

Electrode

10.0-14.0

10.0-14.0

10.0-13.0

8.0-10.0

Nipple

20.0-24.0

22.0-26.0

20.0-23.0

19.0-22.0

Young's modulus(Gpa)

Electrode

9.0-13.0

10.0-14.0

8.0-12.0

7.0-9.3

Nipple

15.0-18.0

16.0-19.0

14.0-16.0

12.0-14.0

Bulk Density (g/cm³)min

Electrode

1.68-1.74

1.70-1.74

1.64-1.68

1.53-1.56

Nipple

1.78-1.82

1.80-1.84

1.75-1.80

1.70-1.74

CTE (100-600)max

Electrode

1.1-1.4

1.1-1.4

1.6-1.9

2.2-2.6

Nipple

0.9-1.2

0.9-1.2

1.1-1.4

2.0-2.5

Ash (%)

0.3

0.5

Current load and current density:

Diameter(mm)

RP

HP

UHP

Current load(A)

Current density(A/cm3)

Current load(A)

Current density(A/cm3)

Current load(A)

Current density(A/cm3)

200

5000-6900

15-21

5500-9000

18-25

225

6100-8600

15-21

6500-10000

18-25

250

7000-10000

14-20

8000-13000

18-25

8100-12200

20-30

300

10000-13000

14-18

13000-17400

17-24

15000-22000

20-30

350

13500-18000

14-18

17400-24000

17-24

20000-30000

20-30

400

18000-23500

14-18

21000-31000

16-24

25000-40000

19-30

450

22000-27000

13-17

25000-40000

15-24

32000-45000

19-27

500

25000-32000

13-16

30000-48000

15-24

38000-55000

18-27

550

32000-40000

13-16

37000-57000

15-23

42000-66000

17-26

600

38000-47000

13-16

44000-67000

15-23

49000-76000

17-26

Nipple Size and Nipple Range (4 buckles)

Nominal diameter(mm)

Nipple type

Nipple socket average diameter(mm)

Nipple max diameter(mm)

Nipple length(mm)

Nipple socket depth(mm)

Buckle length(mm)

D4

D1

L1

L2

L3

800

432T4L

428.64

431.80

635.00

323.50

319.50

750

406T4L

403.24

406.40

609.60

310.80

306.80

750

406T4N

403.24

406.40

584.20

298.10

294.10

700

374T4L

371.49

374.65

558.80

285.40

281.10

700

374T4N

371.49

374.65

457.20

234.60

230.60

650

355T4L

352.44

355.60

558.80

285.40

281.40

650

355T4N

352.44

355.60

457.20

234.60

230.60

600

317T4L

314.34

317.50

457.20

234.60

230.60

600

317T4N

314.34

317.50

355.60

183.80

179.80

550

298T4L

295.29

298.45

457.20

234.60

230.60

550

298T4N

295.29

298.45

355.60

183.80

179.80

500

269T4L

266.72

269.88

457.20

234.60

230.60

500

269T4N

266.72

269.88

355.60

183.80

179.80

450

241T4L

238.14

241.30

355.60

183.80

179.80

450

241T4N

238.14

241.30

304.80

158.40

154.40

400

222T4L

219.09

222.25

355.60

183.80

179.80

400

222T4N

219.09

222.25

304.80

158.40

154.40

350

203T4L

200

04

203.20

304.80

158.40

154.40

350

203T4N

200.04

203.20

254.00

133.00

129.00

300

177T4N

174.64

177.80

215.90

114.00

110.00


9. Shipment

Graphite Electrode shipment

10. Customer Show

Graphite Electrode Customer Show

name card



Carbographite Industrial PTE.LTD

 Carbographite Industrial PTE.LTD established in 1991, a leading manufacturer of premium quality graphite electrodes with RP HP and UHP grades which diameter ranging from 150-700mm, For now, there are three independent factories in Carbographite which are located in Handan/Gongyi/Jilin. For more than 2 decades, we have been serving the industry and continous improvements in technology and strict quality control, making us one of the major supplier of graphite electrodes. Product has export to ITALY, UKRAINE, RUSSIA, SINGAPORE, IRAN, PAKISTAN,EGYPT.

Company Info

  • Company Name: Carbographite Industrial PTE.LTD
  • Representative: xiaoyu, liu
  • Product/Service: graphite electrode , carbon electrode paste , carbon raiser , Calcined petroleum coke , Graphitized petroleum coke , Refractory
  • Capital (Million US $): US 1M
  • Year Established: 2016
  • Total Annual Sales Volume (Million US $): US$10 Million - US$50 Million
  • Export Percentage: 41% - 50%
  • Total Annual Purchase Volume (Million US $): US$10 Million - US$50 Million
  • Contact Person: Mr. Andy Lou
  • Tel: 86-0371-64124536
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