Ultra high power graphite electrode is widely used in the steelmaking industry of arc furnace in steel industry. With the adjustment of the steel industry, the production of high quality steel and special copper must be smelted by electric arc furnace, and graphite electrode must be used in the smelting of electric arc furnace.
Specification :
Nominal diameter | Inch | Actual diameter | Nominal length | Allowable variation | |||
Off-size length | |||||||
length | Maximum | Minimum | |||||
350 | 14 | 357 | 352 | 1800-2000-2100 | ±100 | -100 | -275 |
400 | 16 | 409 | 403 | ||||
450 | 18 | 460 | 454 | ||||
500 | 20 | 511 | 505 | 2000-2100-2250-2400-2700 | ±100 | -100 | -275 |
550 | 22 | 562 | 553 | ||||
600 | 24 | 613 | 607 | ||||
700 | 26 | 714 | 708 | 2400-2700 | ±100 | -100 | -275 |
Technical Indicators of Ultra high power graphite electrode:
Items | Classification | Unit | Nominal Diameter (mm) | ||
Ultra High Power Graphite Electrodes | |||||
350-400 | 450-500 | 550-600 | |||
Resistivity | Electrode | μΩm | 6.2 | 6.3 | 6.3 |
Nipple | 5.0 | 5.0 | 4.5 | ||
Bending Strength | Electrode | Mpa | 10.5 | 10.5 | 11.0 |
Nipple | 18.0 | 18.0 | 20.0 | ||
Young’s Modulus | Electrode | Gpa | 14.0 | 14.0 | 14.0 |
Nipple | 18.0 | 18.0 | 22.0 | ||
Bulk Density | Electrode | g/cm3 | 1.66 | 1.66 | 1.66 |
Nipple | 1.75 | 1.75 | 1.75 | ||
CTE (100℃-600℃) | Electrode | ×10-6/℃ | 1.5 | 1.5 | 1.4 |
Nipple | 1.4 | 1.4 | 1.2 | ||
Ash Content |
|
% | 0.3 | 0.3 | 0.5 |
Recommended current load of UHP Graphite Electrodes:
Grade | Nominal Dia. | Allowable current A | Current density A/cm2 | ||
UHP electrode |
|
AC | DC | AC | DC |
300mm | 15000~22000 |
|
20~30 |
|
|
350mm | 20000~30000 | – | 20~30 | – | |
400mm | 25000~40000 | – | 19~30 | – | |
450mm | 32000~45000 | – | 19~27 | – | |
500mm | 38000~55000 | – | 18~27 | – | |
550mm | 45000~65000 | 49000~78000 | 18~27 | 20~32 | |
600mm | 50000~75000 | 58000~93000 | 18~26 | 20~32 | |
650mm | 60000~85000 | 60000~110000 | 18~25 | 20~30 | |
700mm | 70000~120000 | 79000~130000 | 18~30 |
20~30 |