UHP Graphite Electrodes

Resistance:4.8-5.8
Density:>1.68
CTE:1.1-1.4
Young Modulue:9.0-13.0
Rupture Modulus:10.0-14.0

Product Information

Graphite Electrode

Graphite Electrode takes the high quality petroleum coke, needle coke, coal tar as raw material after the process of kneading, molding, baking and pressing. And then it was treated with impregnation and subsequent graphitized at 2500ºC, was produced by mechanical processing again.

The diamter of our RP HP SHP and UHP graphite electrode is 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 550mm, 600mm with length 1500mm, 1800mm, 2400mm and 2700mm.

Property

1. Low resistivity
2. Good conductivity
3. Low ash
4. Compact and uniform structure
5. Good oxidation resistance
6. Mechanical strength

Items RP HP UHP
Φ200-φ300 Φ350-φ600 Φ200-φ400 Φ450-φ600 Φ250-φ400 Φ450-φ600
Resistivity (uΩm)max Electrode 8.5 6.5 5.5
Nipple 6.5 5.5 4.5
Bulk Density (g/cm³)min Electrode 1.53 1.52 1.62 1.60 1.67 1.66
Nipple 1.69 1.73 1.75
Rupture Strength (Gpa)min Electrode 8.5 7.0 10.5 9.8 11
Nipple 15.0 16.0 20.0
Young’s Modulus (Gpa)max Electrode 9.3 12.0 14.0
Nipple 14.0 16.0 18.0
Ash (%)max Electrode 0.5 0.3 0.3
Nipple 0.5 0.3 0.3
CTE (100-600℃)max Electrode 2.9 2.4 1.5
Nipple 2.8 2.2 1.4
 
Diameter RP HP UHP
Unit(mm) Current Load (A) Current Density(A/cm³) Current Load (A) Current Density(A/cm³) Current Load (A) Current Density(A/cm³)
200 5000-6900 15-21 5500-9000 18-25    
225 6100-8600 15-21 6500-10000 18-25    
250 7000-10000 14-20 8000-13000 18-25 8100-12200 20-30
300 10000-13000 14-18 13000-17400 17-24 15000-22000 20-30
350 13500-18000 14-18 17400-24000 17-24 20000-30000 20-30
400 18000-23500 14-18 21000-31000 16-24 25000-40000 19-30
450 22000-27000 13-17 25000-40000 15-24 32000-45000 19-27
500 25000-32000 13-16 30000-48000 15-24 38000-55000 18-27
550 32000-40000 13-16 37000-57000 15-23 42000-66000 17-26
600 38000-47000 13-16 44000-67000 15-23 49000-76000 17-26
 
Nominal Diameter Nipple Type Nipple scoket average diameter Nipple largest diameter Nipple length Nipple scoket-depth Buckle length
D4 D1 L1 L2 L3
550 298T3L 394.24 298.45 457.2 234.6 230.6
500 273T3L 268.84 273.05 457.2 234.6 230.6
500 273T3N 268.84 273.05 355.6 183.8 179.8
400/450 241T3L 237.09 241.3 355.6 183.8 179.8
400/450 2413T3N 237.09 241.3 338.7 175.30 171.30
350/400 215T3L 211.69 215.9 355.6 183.3 179.8
350/400 2153T3N 211.69 215.9 304.8 158.4 154.4
300 177T3N 172.95 177.16 270.9 141.50 137.50
 
Item Deviation(3buckle) Deviation(4buckle)
Max Min Max Min
Nipple Length 0 -1 0 -1
Nipple largest diameter 0 -0.4 0 -0.4
Nipple smallest diameter 0 -0.4 0 -0.4
Nipple clearance 10   10  
Nipple socket   smallest diameter 0.4 0 0.4 0
Nipple depth 10 0 10 0
 
Nominal Diameter Actual Diameter
Max Min Min.Crust Diameter
150 154 149 146
200 205 200 197
250 256 251 248
300 307 302 299
350 357 352 349
400 409 403 400
450 460 454 451
500 511 505 502
550 562 556 553
600 613 607 604
650 663 657 654
700 714 708 705
750 765 759 756
800 816 810 807
 
Dia(mm) 150 200 250 300 350 400 450 500 550 600 650 700
Moment(NM) 140 200 450 650 820 1000 1600 2600 3600 4200 5000 6000

Corporate Strength

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