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High Quality Graphite Electrode used in Electric Arc Furnace and Ladle Furnace

Product Details

Product Details

Product Description

Product Description
Yanjun Carbon is the subsidiary of Lubei Carbon which mainly produce RP/HP/UHP graphite electrodes in diameter 100mm-600mm, we have a complete calcining, crushing, forming, baking, impregnation, graphitization, machining production lines and advanced technology and complete quality test equipment for quality control.
Size of Electrodes:
Norminal Diameter (mm)Actual Diameter (mm)Length (mm)*
mminchMaxMinLow Spot
7537873721600
100410398971600
13051321271261600
15061541491461800
20082052001971800
22592302252221800
250102562512481800
300123073022991800
350143573523491800
400164094034001800.2100
450184604544511800.2100
500205115055021800.2100
550225625565532100.2400
600246136076042100.2400

Dimension of Cylinder Nipples:
Norminal Diameter (mm)Size of Nipples (mm)Size of Sockets (mm)Thread (mm)
mminchDdLDdHabc
75341.20
-0.5
33.80
-0.5
103.00
-1.0
42.5+0.5035.1+0.5053.0+7
0
8.472.372.82
100466.759.3135.068.060.669.0
130569.862.4153.071.163.778.0
150688.981.5169.090.282.885.0
2008122.2114.8203.0123.5116.1103.0
2259139.7128.8203.0140.98130.0106.012.703.674.32
25010152.4141.5228.0154.1143.2116.0
30012184.2173.3254.0185.9175.0129.0
35014215.9205.0280.0217.6206.7142.0
40016244.5233.6305.0246.2235.3155.0
45018274.30
-0.7
263.40
-0.7
340.00
-2 .0
276.0+0.70265.1+0.70172.5
50020296.0285.1375.0297.7286.8190.0

Dimension of 3TPI Conical Nipples:
Norminal Diameter (mm)Size of Nipples (mm)Size of Sockets (mm)Thread (mm)
mminchDLd1dH
2259139.70
-0.5
203.20-190.730
-5
<10131.27+0.5
0
107.6+7
0
8.47
25010155.57220.10103.80147.14116.00
30012177.17270.90116.90168.73141.50
35014215.90304.80150.00207.47158.40
40016215.9304.8150207.47158.40
40016241.30338.70169.80232.87175.30
45018241.30338.70169.80232.87175.30
45018273.05355.60198.70264.62183.80
50020273.05355.60198.70264.62183.80
50020298.45372.60221.30290.02192.20

Dimension of 4TPI Conical Nipples:
Norminal Diameter (mm)Size of Nipples (mm)Size of Sockets (mm)Thread (mm)
mminchDLd1dH
75346.040
-0.5
76.200
-1
20.800
-5
<739.72+0.5
0
44.10+7
0
6.35
100469.85101.6040.3063.5356.80
130579.38127.0045.6073.0669.50
150692.08139.7056.2085.7675.90
2008122.24177.8080.00115.9294.90
2259139.70177.8097.46133.3894.90
25010152.40190.50108.00146.08101.30
30012177.80215.90129.20171.48114.00
35014203.20254.00148.20196.88133.00
40016222.25304.80158.80215.93158.40
40016222.25355.60150.00215.93183.80
45018241.30304.80177.90234.98158.40
45018241.30355.60169.42234.98183.80
50020269.88355.60198.00263.56183.80
50020269.88457.20181.08263.56234.60
55022298.45355.60226.58292.13183.80
55022298.45457.20209.65292.13234.60
60024317.50355.60245.63311.18183.30
60024317.50457.20228.70311.18234.60

RP Specifications:
ItemUnitNorminal Diameter(mm)
75~130150~225250~300350~500
Electric Resistivity MaxElectrodeμΩ·m8.59.09.09.0
Nipples6.56.56.56.5
Flexural Strength MinElectrodeMPa9.89.87.86.4
Nipples13.013.013.013.0
Elastic Modulus MaxElectrodeGPa9.39.39.39.3
Nipples14.014.014.014.0
Bulk Density MinElectrodeg/cm³1.581.521.521.52
Nipples1.681.681.681.68
C.T.E. Max(100ºC~600ºC)Electrode10¯6 /ºC2.92.92.92.9
Nipples2.72.72.82.8
Ash Max%0.50.50.50.5

HP Specifications:
ItemUnitNorminal Diameter(mm)
200~400450~500550~600
Electric Resistivity MaxElectrodeμΩ·m6.87.57.0
Nipples5.55.55.0
Flexural Strength MinElectrodeMPa10.59.810.0
Nipples14.014.016.0
Elastic Modulus MaxElectrodeGPa12.012.012.0
Nipples16.016.018.0
Bulk Density MinElectrodeg/cm³1.601.601.65
Nipples1.701.701.75
C.T.E. Max(100ºC~600ºC)Electrode10¯6 /ºC2.42.42.4
Nipples2.22.22.2
Ash Max%0.30.30.3

UHP Specifications:
ItemUnitNorminal Diameter(mm)
300~400450~500550~600
Electric Resistivity MaxElectrodeμΩ·m6.26.35.8
Nipples4.54.54.0
Flexural Strength MinElectrodeMPa11.511.511.0
Nipples20.020.022.0
Elastic Modulus MaxElectrodeGPa14.014.014.0
Nipples20.020.022.0
Bulk Density MinElectrodeg/cm³1.711.701.68
Nipples1.761.781.80
C.T.E. Max(100ºC~600ºC)Electrode10¯6 /ºC1.51.51.5
Nipples1.41.41.3
Ash Max%0.30.30.3

Current-Carrying Capacity of RP graphite electrodes
Norminal diameter(mm)Current-Carrying Capacity(A)Current Density(A/cm²)
751000~140022-31
1001500~240019-30
1302200~340017~26
1503000~450016-25
2005000~690015-21
2507000~1000014-20
30010000~1300014~18
35013500~1800014~18
40018000~2350014~18
45022000~2700013~17
50025000~3200013~16
55030000~4200013~16
60040000~5300013~16

Current-Carrying Capacity of HP graphite electrodes
Norminal diameter(mm)Current-Carrying Capacity(A)Current Density(A/cm²)
2005500~900018-28
2508000~1300018-25
30013000~1740017~24
35017400~2400017~24
40021000~3100016~24
45025000~4000015~24
50030000~4800015~24
55044000~5800015~24
60052000~6700015~24

Current-Carrying Capacity of UHP graphite electrodes
Norminal diameter(mm)Current-Carrying Capacity(A)Current Density(A/cm²)
30015000~2200020~30
35020000~3000020~30
40025000~4000019~30
45032000~4500019~27
50038000~5500018~27
55045000~7000018~27
60050000~9700018~27

Precautions for use:
1. When selecting electrode diameter for steel making, please refer to electrode current capacity.
2.Graphite electrodes should be protected from rain and snow during transportation and storage. Before use, they must be dried.
3.Graphite electrodes should be handled with care during loading, unloading, and transportation to protect the threads and prevent damage.
4.Before connecting the electrode, the electrode socket thread must be blown out with compressed air, and then the nipples and the electrode should be tightened.
5.The electrode lifting device of the electrode should not shake during operation to prevent the nipples from loosening and tripping.
6.The electrode holder must not hold the electrode near the nipple socket.
7.When charging the furnace, a large steel block should be placed at the lower part to prevent the material from collapsing and breaking the electrode during melting.

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