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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High power
|
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Project
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Nominal diameter /mm
|
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200-400
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450-500
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550-700
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Resistivity /
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μΩ·m
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≦
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Electrode
|
7
|
7.5
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7.5
|
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Joint
|
6.3
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6.3
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6.3
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Flexural strength /
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Mpa
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≧
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Electrode
|
10.5
|
10
|
8.5
|
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Joint
|
17
|
17
|
17
|
|
Elastic modulus /
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Gpa
|
≦
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Electrode
|
14
|
14
|
14
|
|
Joint
|
16
|
16
|
16
|
|
Bulk density /
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g/cm3
|
≧
|
Electrode
|
1.6
|
1.6
|
1.6
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|
Joint
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1.72
|
1.72
|
1.72
|
|
Thermal expansion coeffi
|
10-6/℃
|
≦
|
Electrode
|
2.4
|
2.4
|
2.4
|
|
cient /
|
Joint
|
2.2
|
2.2
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2.2
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Ash / %
|
|
≦
|
|
0.5
|
0.5
|
0.5
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Size and permissble variation of Graphite Electrode
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Nominal
|
Actual diameter
|
Nominal length
|
Actual
|
|
|
diameter
|
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
|
|
10
|
250
|
256
|
251
|
248
|
1600/1800/2000
|
±100
|
-275
|
|
12
|
300
|
307
|
302
|
299
|
|
14
|
350
|
357
|
352
|
349
|
|
16
|
400
|
409
|
403
|
400
|
1600/1800/2000/2200
|
|
18
|
450
|
460
|
454
|
451
|
|
20
|
500
|
511
|
505
|
502
|
1800/2000/2200/2400
|
|
22
|
550
|
562
|
556
|
553
|
|
24
|
600
|
613
|
607
|
604
|
2000/2200/2400/2700
|
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