Shandong Rongfu new material technology Co,Ltd

electrodo de grafito mm 550-700 HP, electrodo de grafito del HP, HP grafito electrodos para hornos de arco, HP fabricante de electrodos de grafito
Electrodo de grafito del HP
HP los electrodos de grafito para hornos de arco
Fabricante de electrodos de grafito de HP
Resistividad eléctrica: 5.5-7.0
Resistencia a la flexión: > = 8.5
Módulo de elasticidad:=13>=0.3
CTE: 1.80-2.20
High power graphite electrode is a graphite electrode with allowable current density between 18-25A/cm2. HP graphite electrode  mainly used in high power steelmaking electric arc furnace.
Physical and Chemical Index of  Hign Power Graphite Electrode:
Item  Unit HP
300～500 550～700
Electric Resistivity  Electrode uΩ.m 5.5～6.8 5.5～7.0
Nipple 4.0～5.5
Bending Strength Electrode MPa ≥10.0 ≥8.5
Nipple ≥18.0
Modulus of Elasticity Electrode GPa ≤13.0
Nipple ≤15.0
Bulk Density Electrode g/cm3 1.62～1.70
Nipple 1.72～1.80
Ash Content Electrode % ≤0.3
Nipple
The Coefficient of Thermal Expansion(CTE) Electrode 10-6/℃ 1.80～2.20
Nipple 1.50～1.80

High Power Graphite Electrode Current Carrying Capacity
Norminal Diameter HP
Current Carrying Capacity Current Density
inch mm A A/cm2
12 300 13000～17400 17～24
14 350 17400～24000 17～24
16 400 21000～31000 16～24
18 450 25000～40000 15～24
20 500 30000～48000 15～24
22 550 34000～53000 14～22
24 600 38000～58000 13～21
28 700 45000～72000 12～19
32 800 ／ ／

Tolerance of Graphite Electrode Diameter and Length（mm) 
Nominal Diameter Actural diameter Length
in mm max min Black surface min
12 300 307 302 299 1800/2000
14 350 358 352 349 1800/2000/2200
16 400 409 403 400 1800/2000/2200
18 450 460 454 451 1800/2000/2200
20 500 511 505 502 2000/2200/2400
22 550 562 556 553 2000/2200/2400/2700
24 600 613 607 604 2200/2400/2700/3000
28 700 714 710 707 2200/2400/2700/3000
29 800 816 812 809 2200/2400/2700/3000

Permissible Deviation of Graphite Electrode Length (mm)
Nominal Length Standard Deviation Short Length Deviation
max min max min
1800 +100 -100 -100 -275
2000 +100 -100 -100 -275
2200 +100 -100 -100 -275
2400 +100 -100 -100 -275
2700 +200 -150 -150 -275
3000 +200 -150 -150 -300>