Ultra high power electrode China

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
 Ultra High power
Project Nominal diameter /mm
300-400 450-500 550-650
Resistivity / μΩ·m ≦ Electrode 6.2 6.3 6
Joint 5.3 5.3 4.5
Flexural strength / Mpa ≧ Electrode 10.5 10.5 10
Joint 20 20 22
Elastic modulus / Gpa ≦ Electrode 14 14 14
Joint 20 20 22
Bulk density / g/cm3 ≧ Electrode 1.67 1.66 1.66
Joint 1.74 1.75 1.78
Thermal expansion coeffi  10-6/℃ ≦ Electrode 1.5 1.5 1.5
cient / Joint 1.4 1.4 1.3
Ash / % 　 ≦ 　 0.5 0.5 0.5

Size and permissble variation of Graphite Electrode
Nominal Actual diameter Nominal length Actual 　
diameter length
　 Maxmum Minmal Black part is the Allow Short feet
　 smallest deviation
Inches 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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