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  • Artificial graphite electrode is made of high-quality low ash materials, such as petroleum coke, needle coke and coal pitch.after calcining,burdening,kneading,forming,baking and pressure impregnation, graphitization and then precision machined with professional CNC machining.such of the products own characteristics with low resistivity, good electrical conductivity ,low ash, compact structure,good anti oxidation and high mechanical strength, so it is the best conductive material for electric arc furnace and smelting furnace. 

    Notes of the use of graphite electrode  

    1.The electrode holder should be held in the place beyond the security line of the top electrode;otherwise, the electrode would be easily broken.the contact surface between the holder and the electrode should be cleaned up regularly to maintain a good contacting,the cooling jacket of the holder shall be avoided from water leakage. 

    2.Identify the reasons it there is gap in the electrode junction,do not use them until the gap is eliminated. 

    3.If there is falling off of nipple bolt when connecting electrodes,it is necessary to complete the nipple bolt. 

    4.The application of electrode should avoid of tilting operation, particularly , the gr.oup of connected electrodes should not be put horizontally so as to prevent from breaking. 

    5.When charging materials to the furnace,the bulk materials should be charged to the place of the furnace bottom,so as to minimize the impact of the large furnace materials on the electrodes. 

    6.The large pieces of insulation materials should be avoided of stacking on the bottom of the electrodes when smelting .so as to prevent from affecting the electrode use,or even broken. 

    7.Avoid of collapsing the furnace lid when rising or dropping the electrodes,which may result in electrode damage.  

    8.It is necessary to prevent the steel slag from splashing to the threads of the electrodes or nipple stored in the smelting site,which may damage the precision of the threads. 


    性能

    Properties

         单位

    Unit

                          石墨电极公称直径

                  Nominal Diameter Of Electrode



    UHP

    HP

    RP



    300-600 mm

    650-800mm

    300-800mm

    300-800mm

    电阻率

    Electric resistivity

    电极Electrode

    μΩ.m

    4.8-5.8

    4.6-5.8

    5.8-6.6

    7.8-8.8

    接头Nipple


    3.8-4.5

    3.8-4.5

    4.2-5.0

    5.0-6.5

    抗折强度

    Flexural strength

    电极Electrode

    Mpa

    10.0-14.0

    10.0-14.0

    10.0-13.0

    7.0-12.0

    接头Nipple


    20.0-26.0

    22.0-26.0

    18.0-22.0

    15.0-20.0

    弹性模量

    Young’s modulus

    电极Electrode

    Gpa

    9.0-13.0

    10.0-14.0

    8.0-12.0

    7.0-9.3

    接头Nipple


    15.0-18.0

    15.0-18.0

    14.0-16.0

    12.0-14.0

    体积密度

    Bulk density

    电极Electrode

    g/cm3

    1.68-1.74

    1.70-1.74

    1.62-1.66

    1.53-1.56

    接头Nipple


    1.77-1.82

    1.78-1.84

    1.74-1.80

    1.70-1.74

    热膨胀系数

    CTE(100-600℃)

    电极Electrode

    ×10-6/

    1.1-1.4

    1.1-1.4

    1.6-1.9

    2.2-2.6

    接头Nipple


    0.9-1.2

    0.9-1.2

    1.1-1.4

    2.0-2.5

    灰分Ash


    0.3

    0.3

    0.3

    0.5


    石墨电极规格及允许偏差 Sizes and permissible variation of graphite electrode

    公称直径Nominal Diameter

    实际直径Actual Diameter(mm)

    实际长度Actual Length(mm)

    mm

    in

    最大Max

    最小Min

    黑皮部分最小Black cover part

    长度Length

    长度允许偏差Tolerance

    短尺长度Short ruler sizes

    200

    8

    205

    200

    197

    1600 1800

    ±100

    -275

    250

    10

    256

    251

    248

    300

    12

    307

    302

    299

    350

    14

    357

    352

    349

    400

    16

    409

    403

    400

    1600 1800 2000 2200

    450

    18

    460

    454

    451

    500

    20

    511

    505

    502

    550

    22

    562

    556

    553

    600

    24

    613

    607

    604

    石墨电极建议电流负荷表 Product current carrying capacity table

    公称直径Nominal Diameter

    允许电流负荷Current carrying capacity

    普通功率石墨电极 RP

    高功率石墨电极HP

    超高功率石墨电极UHP

    mm

    A

    A/cn2

    A

    A/cm2

    A

    A/cm2

    200

    5000-6900

    15-21

    5500-9000

    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

    38000-50000

    18-27

    550

    31000-41000

    13-16

    37000-58000

    15-23

    45000-65000

    18-27

    600

    37000-45000

    13-16

    42000-65000

    15-23

    52000-75000

    18-26



    Packing 

    Graphite electrode is packaged by wooden cages and nipple is packaged by wooden boxes.graphite electrode and nipple can be packaged together according to the requirements of the customers.the products are protected by waterproof and dustproof plastic inside and fixed by steel bands,fit for road and sea transportation .

         


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    If you have any questions, feedback or comments, please fill out the form below and we will reply you back as soon as possible.

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    Qingdao Tennry Carbon Co.,Ltd

    Tel: 86-532-88732781

    Fax: 86-532-88732787

    E-mail: admin@tennry.com

    Web: www.tennry.com

    Add:506 room,5th floor,Shengwen, No.928 Heilongjiang Middle Road, Chengyang District,Qingdao City, Shandong Province, China