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
Graphite electrode |
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Project |
Nominal diameter /mm |
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250-300 |
350-450 |
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Resistivity / |
μΩ·m |
≦ |
Electrode |
9 |
9 |
Joint |
8 |
8 |
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Flexural strength / |
Mpa |
≧ |
Electrode |
8 |
7 |
Joint |
15 |
15 |
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Elastic modulus / |
Gpa |
≦ |
Electrode |
9.3 |
9.3 |
Joint |
14 |
14 |
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Bulk density / |
g/cm3 |
≧ |
Electrode |
1.53 |
1.53 |
Joint |
1.7 |
1.7 |
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Thermal expansion coeffi |
10-6/℃ |
≦ |
Electrode |
2.9 |
2.9 |
cient / |
Joint |
2.8 |
2.8 |
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Ash / % |
|
≦ |
|
0.5 |
0.5 |
Size and permissble variation of Graphite Electrode
Nominal |
Actual diameter |
Nominal length |
Actual |
|
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diameter |
length |
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|
Maxmum |
Minmal |
Black part is the |
Allow |
Short feet |
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|
smallest |
deviation |
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Inches |
mm |
||||||
10 |
250 |
256 |
251 |
248 |
1600/1800/2000 |
±100 |
-275 |
12 |
300 |
307 |
302 |
299 |
|||
14 |
350 |
357 |
352 |
349 |
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16 |
400 |
409 |
403 |
400 |
1600/1800/2000/2200 |
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18 |
450 |
460 |
454 |
451 |
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20 |
500 |
511 |
505 |
502 |
1800/2000/2200/2400 |
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22 |
550 |