550-800mm RP graphite electrode,RP Graphite Electrode,Industrial Graphite Electrode,High Density Graphite Electrodes Manufacturer
RP Graphite Electrode
Industrial Graphite Electrode
High Density Graphite Electrodes Manufacturer
Electric resistivity :
Bending strength:>=
Elastic Modulus: <=9
Bulk density:
Ash: <=
CTE:
Regular power graphite electrode is a graphite electrode with allowable current density lower than 17A/cm2. RP graphite electrode is mainly used in the ordinary power electric furnace for steelmaking, silicon smelting and yellow phosphorus refining etc.
|
Physical and Chemical Index of Hign Power Graphite Electrode:
|
|
Item
|
Unit
|
HP
|
|
300～500
|
550～700
|
|
Electric Resistivity
|
Electrode
|
uΩ.m
|
～
|
～
|
|
Nipple
|
～
|
|
Bending Strength
|
Electrode
|
MPa
|
≥
|
≥
|
|
Nipple
|
≥
|
|
Modulus of Elasticity
|
Electrode
|
GPa
|
≤
|
|
Nipple
|
≤
|
|
Bulk Density
|
Electrode
|
g/cm3
|
～
|
|
Nipple
|
～
|
|
Ash Content
|
Electrode
|
%
|
≤
|
|
Nipple
|
|
The Coefficient of Thermal Expansion(CTE)
|
Electrode
|
10-6/℃
|
～
|
|
Nipple
|
～
|
|
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
|
