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Factory Sale Carbon Electrode Graphite Electrode UHP HP for Eaf

3300.0 USD
Min. Order: 20 Ton
Trade Term: FOB,CFR,CIF,DAT,FAS,DDP,DAP,CIP,CPT,FCA,EXW
Payment Terms: Paypal, L/C, D/P, D/A, T/T, WU, Money Gram
Supply Ability: 80000 Ton/Year
Place of Origin: Hebei

Company Profile

Location: Shijiazhuang, Hebei, China (Mainland)
Business Type: Manufacturer

Product Detail

Model No.: Graphite Products
Means of Transport: Ocean, Air, Land
Brand Name: BENHONG
Model NO.: 500mm*2400mm
Application: Steel Making
Nipple: 4 Tpi
Specification: 300mm-700mm
Bulk Density: 1.72
Ash: 0.3%
Resistivity: 5.5
keywords: graphite electrode rp hp uhp
Carbon Content: High-Carbon
Transport Package: Wooden Pallets with Steel Strips
Production Capacity: 80000 Ton/Year
Packing: Graphite Electrodes are packed on wooden pallets
Delivery Date: negotiate
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Product Description

DESCRIPTION

UHP graphite electrode is used for the recycling of steel in the electric arc furnace industry. Its main ingredient is high-value needle bck which is made from either petroleum or coal tar. Graphite electrodes are finished with a cylinder shape and machined with threaded areas at each end. In this way, the graphite electrodes can be assembled into an electrode column using electrode nipple.
In order to meet the requirement of higher work efficiency and lower total cost, large capacity ultra-high power arc furnaces are becoming more and more popular. Because of this, UHP graphite electrodes with diameters of over 500 mm will dominate market.     uhp 450 graphite electrode

 

 

FEATURE

Withstand large currents, high discharge rate.Good dimension stability, not easy to deform.Resistant to bursting & spalling.High resistance to oxidation and thermal shock.High mechanical strength, low electrical resistance.High machining accuracy, good surface finishing.    uhp 450 graphite electrode

 

APPLICATION

Graphite electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.DC electric arc furnace.AC electric arc furnace.Submerged arc furnace.Ladle furnace.

SPECIFICATION

Table 1: Technical Specification of UHP Graphite Electrode


Resistance

Density

FlexureStrength

ElasticModulus

AshContent

CTE

CurrentLoad

CurrentDensity

(inch)

(≤,µ·m)

(≥,g/cm3)

(≥,MPa)

(≤,GPa)

(≤,%)

(100°C-600°C)

(A)

(A/cm2)







(≤,10-6/°C)



10




14



8100-12200

20-30

12




14



15000-22000

20-30

14




14



20000-30000

20-30

16




14



25000-40000

19-30

18




14



32000-45000

19-27

20



11

14



38000-55000

18-27

22



11

14



42000-66000

17-26

24



11

14



49000-76000

17-26

Table 2: Graphite Electrode Size & Tolerance

Diameter(mm)

Length(mm)

NominalDiameter

ActualDiameter

NominalLength

Tolerance

ShortLength

(inch)

(mm)

(max.)

(min.)

(roughspot)

10

250

256

251

248

1600/1800

±100

-275

12

300

307

302

299

1600/1800

14

350

357

352

349

1600/1800

16

400

409

403

400

1600/1800/2000/2200

18

450

460

454

451

1600/1800/2000/2200

20

500

511

505

502

1800/2000/2200/2400

22

550

562

556

553

1800/2000/2200/2400

24

600

613

607

604

2000/2200/2400/2700

SURFACE QUALITY

There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart.There should be no transverse burst on the electrode surface. For the longitudinal burst, the length should be less than 5% of the electrode circumference and the width should be 0.3 to 1.0 mm.The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode.

SpecificationDefectDimension

NominalDiameterofGraphiteElectrode(mm)

300-400

450-600

Diameter(mm)

20-40

30-50

(<20mmshouldbenegligible)

(<30mmshouldbenegligible)

Depth(mm)

5-10

10-15

(<5mmshouldbenegligible)

(<10mmshouldbenegligible)


Guidance of Using
Being hard and brittle ,artificialgraphite electrode shall be specially handled.Proper operationg may reduce the consumption and cost.
1. Professional tools should be used for hoisting graphite electrodes. It is strictly forbidden to use a crowbar to prevent impact damage during handling.
2. Graphite electrodes are prohibited from rain, snow and water, and should be kept dry. If it is found to be damp, it should be dried before use, the temperature should not exceed 100 ºC, and the drying time should not be less than 48h.
3. Do not stack near debris such as clay, slag, etc., so as not to pollute the surface of the graphite electrode and affect the conductive effect.
4. Before the graphite electrode is connected, carefully check whether the electrode connector hole is intact, whether the connector thread is damaged, and whether the connector bolt is lost. When the electrode is lifted, the electrode connector thread of the ground terminal should be prevented from being damaged.
5. Dust and debris in the joints and joint holes should be blown dry with compressed air.  uhp graphite electrode manufacturer

6. Graphite electrodes must be tightly connected, and no tilt is allowed during connection. Torque wrenches should be used to prevent excessive force or too small, and the gap is not greater than 0.4mm.
7. The electrode holder should be clamped, not loose and in good contact, and no arc should be generated. Otherwise, the connection will be reddish, oxidized, thinned and broken.    arc furnace graphite electrode

8. If the electrode is lifted with a metal lifting plug, the thread in the joint hole must not be damaged. After lifting, the lifting plug should be unscrewed to prevent dust and debris from falling into the joint hole.
9. When the electrode lifting device of the electric furnace is running, it should be kept stable. After the furnace cover is repaired, check whether the furnace cover is positioned correctly. During smelting, refractory materials are used to close the furnace lid to prevent the oxidation of the upper electrode of the flame in the furnace.
10. The holder should be clamped outside the safety wire of the electrode connector hole area.
11. When distributing the molten pool, the big piece is at the bottom and the small piece is at the top. Do not place the charge with poor conductivity on the top. During melting, the unmelted charge should be handled in time to prevent the collapsed material from breaking the electrode.



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