Process Flow Ultra high power High power Regular power Moment Dimensions of tapered nipples Uses of Graphite electrodes Specifications and allowance Moment for reference connecting nipples and electrodes
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Ultra high power
Ultra high power
Ultra high power
ltem unit (mm)Nominal Diameter
YB/T4090-2000 DNTS-UHP
300,350,400 450-500 350-400 450-500 550-600
Electric Resistivily Electrode μΩ m ≤6.2 ≤6.5 4.8-6.0 4.8-6.2 5.0-6.2
Nipple ≤5.5 ≤5.5 3.5-4.5 3.8-4.5 3.8-4.5

Bending stregth
Electrode Mpa ≥10.5 ≥10.0 ≥12.0 ≥11.0 ≥11
Nipple ≥18 ≥18 ≥18 ≥18 ≥18

Elastic moduluc
Electrode Gpa ≤14.0 ≤14.0 ≤14.0 ≤14.0 ≤14.0
Nipple ≤18.0 ≤18.0 ≤18.0 ≤18.0 ≤18.0

Bulk density
Electrode g/cm3 ≥1.65 ≥1.64 1.65-1.72 1.66-1.74 1.66-1.74
Nipple ≥1.72 ≥1.70 1.76-1.78 1.76-1.82 1.78-1.82

Ash
Electrode % ≤0.3 ≤0.3 ≤0.3 ≤0.3 ≤0.3
Nipple
CTE
(100-600)℃
Electrode 10-6/℃ ≤1.5 ≤1.5 1.20-1.40 1.20-1.40 1.2-1.40
Nipple ≤1.4 ≤1.4 1.0-1.20 1.0-1.20 1.0-1.20

 


Nominal Diameter

Cross Sectional Area
YB/T4090-2000 DNTS-UHP

Current Carrying Capacity

Current Density

Electrical are furnace


Refiners furnace

  Current Density Current Carrying Capacity
Current Density

in 

mm cm3 A A/cm3 A A/cm3 A A/cm3
14 350 973 20000-30000 20-30 23000-32000 24-33 26000-35000 27-36
16 400 1275 25000-40000 19-30 28000-41000 22-32 31000-44000 24-34
18 450 1622 32000-45000 19-27 34000-48500 21-30 36000-49500 22-31
20 500 2000 38000-55000 18-27 40000-58000 20-29 42000-60500 21-30
22 550 2427     46000-65000 19-27 49000-70000 20-29
24 600 2892     52000-75000 18-26 56000-81000 19-28
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