Ultra high power electrode
Artifical graphite electrodes is made of high-quality low ash materials,like the petroleum coke,needle coke and coal pitch.After experiencing calcinations,burdening,kneading,forming,baking and pressure impregnation,it is graphitized in a hign temperature of over 3000℃, And then treated with machining.this kind of product is widely used for electric arc steel-making,yellow phosphorus,indusreial silicon,other alloys and non-metallic materials of electric atc furnace. this product is characterized by low resistivity,good electrical conductivity,low ash,even and compact structure,good antioxidation and high mechanical strength
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Ultra High power
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Project
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Nominal diameter /mm
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300-400
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450-500
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550-650
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Resistivity /
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μΩ·m
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≦
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Electrode
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6.2
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6.3
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6
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Joint
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5.3
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5.3
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4.5
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Flexural strength /
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Mpa
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≧
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Electrode
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10.5
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10.5
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10
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Joint
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20
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20
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22
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Elastic modulus /
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Gpa
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≦
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Electrode
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14
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14
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14
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Joint
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20
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20
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22
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Bulk density /
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g/cm3
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≧
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Electrode
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1.67
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1.66
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1.66
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Joint
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1.74
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1.75
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1.78
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Thermal expansion coeffi
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10-6/℃
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≦
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Electrode
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1.5
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1.5
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1.5
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cient /
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Joint
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1.4
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1.4
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1.3
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Ash / %
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≦
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0.5
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0.5
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0.5
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Size and permissble variation of Graphite Electrode
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Nominal
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Actual diameter
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Nominal length
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Actual
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diameter
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length
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Maxmum
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Minmal
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Black part is the
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Allow
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Short feet
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smallest
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deviation
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Inches
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mm
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10
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250
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256
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251
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248
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1600/1800/2000
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±100
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-275
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12
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300
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307
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302
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299
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14
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350
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357
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352
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349
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16
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400
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409
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403
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400
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1600/1800/2000/2200
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18
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450
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460
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454
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451
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20
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500
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511
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505
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502
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1800/2000/2200/2400
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22
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550
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562
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556
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553
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24
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600
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613
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607
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604
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2000/2200/2400/2700
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