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Technical Specification HP
Item | Unit | Nominal Diameter (mm) | ||||
HP-A | HP-B | |||||
≤Φ400 | ≥Φ450 | ≤Φ350 | ≥Φ400 | |||
Resistance | Electrode | μΩ·m | ≤6.5 | ≤7.5 | ||
Nipple | ≤5.5 | ≤6.0 | ||||
Bending Strength | Electrode | MPa | ≥10.5 | ≥9.8 | ≥9.0 | ≥8.0 |
Nipple | ≥16.0 | ≥13.0 | ||||
Elastic Modulus | Electrode | GPa | ≤12.0 | ≤12.0 | ||
Nipple | ≤16.0 | ≤14.0 | ||||
Bulk Density | Electrode | g/cm3 | ≥1.62 | ≥1.60 | ≥1.62 | ≥1.60 |
Nipple | ≥1.73 | ≥1.72 | ||||
C.T.E. | Electrode | 10-6/°C | ≤2.4 | ≤2.7 | ||
Nipple | ≤2.2 | ≤2.5 | ||||
Ash | % | ≤0.3 | ≤0.3 | |||
Allowable current load and current density (recommended) HP
Dia. | HP | |||
mm | Electric Arc Furnace | Refining Furnace | ||
Current load A | Current density A/cm2 | Current load A | Current density A/cm2 | |
200 | 5500-9000 | 18-25 | 6000-10000 | 19-27 |
225 | 6500-10000 | 18-25 | 7000-10500 | 18-25 |
250 | 8000-13000 | 18-25 | 10000-14000 | 21-29 |
300 | 13000-17400 | 17-24 | 15000-21000 | 21-29 |
350 | 17400-24000 | 17-24 | 20000-28000 | 21-29 |
400 | 21000-31000 | 16-24 | 25000-35000 | 19-28 |
450 | 25000-40000 | 15-24 | 30000-45000 | 19-28 |
500 | 30000-48000 | 15-24 | 36000-54000 | 18-27 |
550 | 37000-57000 | 15-23 | 40000-60000 | 18-25 |
600 | 44000-67000 | 15-23 | 45000-65000 | 16-23 |
700 | 54000-73000 | 15-23 |
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