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Graphite Electrode

Our Production factory professionally engage in research and development, manufacturing and supplying, and international trade of graphite electrode and carbon products, we are the fist UHP manufacturer in china. By continuous development and innovation, now developed the complete process for the carbon production, including calcination, forming, baking, pitch impregnation, graphitizing, machining, as well as the advanced test equipment from China and abroad. The main products series: 250mm-700mm HP/RP Grade and UHP Grade graphite electrode. The annual capacity is 50 thousands MT. The company has passed ISO 9001: 2015 quality management system certification, product quality is stable and reliable.

Technical Parameters

We can customize products as per the customer’s actual operational parameters.

 

ItemUnitNPHPUHP
≤Ø400≥Ø450≤Ø400≥Ø450≤Ø400≥Ø450
Electric ResistivityElectrodeμΩ·m≤7.5≤8.0≤6.0≤6.5≤5.5≤5.5
Nipple≤5.5≤5.5≤4.5≤4.5≤4.0≤3.8
Transverse StrengthElectrodeMpa≥8.0≥7.0≥10.5≥10≥10.5≥10.0
Nipple≥15.0≥15.0≥17.0≥17.0≥20.0≥22.0
Young’s ModulusElectrodeGpa≤9.3≤14.0≤14.0
Nipple≤14.0≤16.0≤22.0
Bulk DensityElectrodeg/cm³≥1.54≥1.65≥1.68
Nipple≥1.70≥1.78≥1.80
Coefficient of Thermal
Expansion
(100-600)
Electrode10-6≤2.9≤2.4≤1.5
Nipple ≤2.8≤2.2≤1.3
Ash%≤0.2≤0.2≤0.2

Standard Dimensions of Graphite Electrodes

We can produce the non-standards dimension GE as per the customer’s requirement

Nominal DiameterDiameter Allowance Range (mm)Nominal Length
inmmmin.max.inmm
820020020560/721500/1800
922522523060/721500/1800
1025025125660/721500/1800
1230030230760/721500/1800
1435035235772/801800/2100
1640040340872/801800/2100
1745045446072/82/941800/2100/2400
2050050551172/82/941800/2100/2400
2255055656272/82/941800/2100/2400
2460060761382/94/1062100/2400/2700
2870070871494/1062400/2700

Standard Size of Nipples and Sockets

Nipple dimensions

Number of Threads Per lnch=3

Electrode
Diameter
IEC CodeDiameter Allowance Range (mm)Socket
inmmLarge Dia.
D1(mm)
Length
L1(mm)
Medium Dia.
D2(mm)
Small Dia.
D3(mm)
Depth
L2(mm)
10250155T3N155.57 220.00 103.80 147.14 116.00 
12300177T3N177.16 270.90 116.90 168.73 141.50 
14350215T3N215.90 304.80 150.00 207.47 158.40 
16400215T3N215.90 304.80 150.00 207.47 158.40 
16400241T3L241.30 338.70 169 80232.87 175.30 
18450241T3N241.30 338.70 169.80 232.87 175.30 
18450273T3L273.05 355.60 198.70 264.62 183.80 
20500273T3N273.05 355.60 198.70 264.62 183.80 
20500298T3L298.45 372.60 221.30 290.02 192.20 
22550298T3N298.45 372.60 221.30 290.02 192.20 

Number of Threads Per lnch=3

Electrode
Diameter
IEC CodeDiameter Allowance Range (mm)Socket
inmmLarge Dia.
D1(mm)
Length
L1(mm)
Medium Dia.
D2(mm)
Small Dia.
D3(mm)
Depth
L2(mm)
8200122T4N122.24 177.80 80.00 115.92 94.90 
10250152T4N152.40 190.50 108.00 146.08 101.30 
12300177T4N177.80 215.90 129.20 171.48 114.00 
14350203T4N203.20 254.00 148.20 196.88 133.00 
16400222T4N222.25 304.80 158.80 215.93 158.40 
16400222T4L222.25 355.60 150.00 215.93 183.80 
18450241T4N241.30 304.80 177.90 234.98 158.40 
18450241T4L241.30 355.60 169.42 234.98 183.80 
20500269T4N269.88 355.60 198.00 263.56 183.80 
20500269T4L269.88 457.20 181.08 263.56 234.60 
22550298T4N298.45 355.60 226.58 292.13 183.80 
22550298T4L298.45 457.20 209.65 292.13 234.60 
24600317T4N317.50 355.60 245.63 311.18 183.80 
24600317T4L317.50 457.20 228.70 311.18 234.60 
28700374T4N374.65 457.20 285.84 368.33 234.60 
28700374T4L374.65 558.80 368.91 368.33 285.40 

Recommended Current Load

GradeNominalCurrentCurrent Density
inmmAA/cm²
RP82005000-690015-21
92256900-900015-21
102507000-1000014-20
1230010000-1300014-18
1435013500-1800014-18
1640018000-2350014-18
1845022000-2700013-17
2050025000-3200013-16
2255028000-3400012-14
2460030000-3600011-13
2870034000-420009-11
HP82005500-900018-25
92256500-1000018-25 
102508000-1300018-25
1230013000-1740017-24
1435017400-2400017-24
1640021000-3100016-24
1845025000-4000015-24
2050030000-4800015-24
2255034000-5300014-22
2460038000-5800013-21
2870045000-7200012-19
UHP1230015000-2200020-30
1435020000-3000020-30
1640025000-4000019-30
1845032000-4500019-27
2050038000-5500018-27
2255045000-6500018-27
2460050000-7500018-26
2870070000-12000018-30

EQUIPMENT

Raw Material:The needle coke is 100% imported. Pulverize and screen the coke. Classify the screened coke according to grain size and store them in individual silos.

Mixing:The raw material after proportioning will be mixed with a proper portion of coal tar and heated, to make it become paste with plasticity.

Forming:The paste after cooled to the process temperature will enter into the pressing machine, and forming as per the product specification.

Baking & Pitch Impregnation:In the baking furnace, the green electrode will be baked to the specified temperature as per the process requirement, then impregnated by coal tar as per specific process, to improve the electrode density and mechanical strength, then baking again to improve electrode performance.

Package

LMM GROUP Partners

REQUEST FOR QUOTE

If you have purchasing needs, please contact our sales department

Tel:86-411 84174804

Emaillmm@magnesiacarbonbricklmm.com

Welsite:https://magnesiacarbonbricklmm.com/

Address:Dashiqiao City,LiaoNingProvince,China

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