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UHP 500 Grade Graphite Electrode for Arc Furnaces

Availability:
Quantity:

UHP 500   500*1800mm , 500*2100mm, 500*2400mm


UHP Graphite Electrode /Ultra High Powder  Graphite Electrodes


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


Production processing

石墨电极生产工艺流程需转换英文


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:

① 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 3000USD per ton of ultra-high power electrode per year, USD 459,000 can be saved.

② The graphite electrode consumes less power, saves the unit steelmaking power consumption, saves the production cost and saves energy!

③ 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.

④ 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.

石墨电极用途


4. Nipple


3TPI/T4L/T4N Or Customized

electrode Nipple


5.  Product Parameters


Test Results :  Properties for UHP500

Nipple

AD

(gm/cc)

g/cm3

SPR

(ohm Micro mtr)

µΩ.m

MOR

(Nmm2)

Mpa

MOE

( kg/mm2)

Gpa

CTE//cmcmC

x10-7(0-50℃)

10-6/℃

(100-600℃)

MAX 1.83 3.9 25.12 16 1.2
MIN 1.75 2.9 18 12 0.9
AVG 1.78 3.6 22.5 14 1.1


Electrode

AD

(gm/cc)

g/cm3

SPR

(ohm Micro mtr)

µΩ.m

MOR

(Nmm2)

Mpa

MOE

( kg/mm2)

Gpa

CTE//cmcmC

x10-7(0-50℃)

10-6/℃

(100-600℃)

MAX 1.73 5.7 14.5 12 1.45
MIN 1.66 4.8 11 8 1.20
AVG 1.69 5.3 12.5 9.8 1.35


Graphite Electrode More specification and Details :  For following just for your reference  :


For more details ,Kindly click the Button " Contact us " Talk to me on Line  or E-mail: sales@china-xingshi.com   , also Whatsapp ,wechat : +86 13028650772



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



The quality of our product is recognized by the quality examination center of the national metallurgy carbon material sampling analyze to all attain the YB/T4088-2015、YB/T4089-2015、YB/T4090-2015.

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



Standard sizes of electrode

Specifications(inch)

Allowable Diameter(mm)

Allowable Length(mm)

Nominal Diameter

Max.

Min.

Nominal Length

Max.

Min.

6

150

154

151

1600

1700

1500

1800

1875

1700

8

200

205

200

1600

1700

1500

1800

1875

1700

9

225

230

225

1600

1700

1500

1800

1875

1700

10

250

256

251

1600

1700

1500

1800

1875

1700

12

300

307

302

1800

1875

1700

14

350

357

352

1600

1700

1500

1800

1875

1700

16

400

409

403

1600

1500

1500

1800

1875

1700

2100

2175

1975

18

450

460

454

1800

1875

1700

2100

2175

1975

2400

2475

2275

20

500

511

505

1800

1875

1700

2100

2175

1975

2400

2475

2275

22

550

562

556

2100

2175

1975

2400

2475

2275

24

600

613

607

2100

2175

1975

2400

2475

2275

2800

2850

2550

28

700

714

708

2400

2475

2275

2800

2850

2550



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

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

————

————

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

49000~88000

17-26

700

48000~59000

12-15

59620~83600

13-18

70000-110000

17-24




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+86 311-82020810
+86 13028650772
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