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Graphite Electrode |
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Graphite electrodes are manufactured with high quality raw materials including petroleum cokes, needle cokes and coal tar pitch through the production processes of calcining, crushing, screening, dosing, kneading, extruding, baking, impregnation, graphitization, machining. Our products are characterized by superior compact structure, good electrical and thermal conductivity, high mechanical |
| strength and high resistance to oxidation and corrosion in high temperature. The graphite electrodes are widely used in electric arc furnaces and ladle refining furnaces for steel making and used in electric smelting furnaces for producing industrial silicon, yellow phosphorus, corundum, nonmetals and so on, it is one essential part of the raw material industry.
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Size of Graphite Electrodes |
公称直径 (mm)
Nominal Diameter |
实际直径 (mm)
Actual Diameter |
长度 (mm)
Length |
mm |
inch |
最大 Max |
最小 Min |
黑皮部分最小 Low Spot |
75 |
3 |
78 |
73 |
72 |
1000 |
100 |
4 |
103 |
98 |
97 |
1200 |
130 |
5 |
132 |
127 |
126 |
1200 |
150 |
6 |
154 |
149 |
146 |
1600 |
200 |
8 |
205 |
200 |
197 |
1600 |
225 |
9 |
230 |
225 |
222 |
1600 |
250 |
10 |
256 |
251 |
248 |
1600.1800 |
300 |
12 |
307 |
302 |
299 |
1600.1800 |
350 |
14 |
357 |
352 |
349 |
1600.1800 |
400 |
16 |
409 |
403 |
400 |
1600.1800.2000.2200 |
450 |
18 |
460 |
454 |
451 |
1600.1800.2000.2200 |
500 |
20 |
511 |
505 |
502 |
1600.1800.2000.2200 |
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| *长度根据客户要求制作 |
圆柱形接头及接头孔尺寸
Dimension of Cylinder Nipples |
公称直径 (mm)
NominaDiameter |
接头尺寸 (mm)
Size of Nipple |
接头孔尺寸 (mm)
Size of Socket |
螺距 (mm)
Thread |
mm |
inch |
D |
d |
L |
D |
d |
H |
a |
b |
c |
75 |
3 |
41.2 |
0
-0.5 |
33.8 |
0
-0.5 |
103.0 |
0
-1.0 |
42.5 |
+0.5
0 |
35.1 |
+0.5
0 |
53.0 |
+7.0
0 |
8.47 |
2.37 |
2.82 |
100 |
4 |
66.7 |
59.3 |
135.0 |
68.0 |
60.6 |
69.0 |
130 |
5 |
69.8 |
62.4 |
153.0 |
71.1 |
63.7 |
78.0 |
150 |
6 |
88.9 |
81.5 |
169.0 |
90.2 |
82.8 |
85.0 |
200 |
8 |
122.2 |
114.8 |
203.0 |
123.5 |
116.1 |
103.0 |
225 |
9 |
139.7 |
128.8 |
203.0 |
140.98 |
130.0 |
106.0 |
12.70 |
3.67 |
4.32 |
250 |
10 |
152.4 |
141.5 |
228.0 |
154.1 |
143.2 |
116.0 |
300 |
12 |
184.2 |
173.3 |
254.0 |
185.9 |
175.0 |
129.0 |
350 |
14 |
215.9 |
205.0 |
280.0 |
217.6 |
206.7 |
142.0 |
400 |
16 |
244.5 |
233.6 |
305.0 |
246.2 |
235.3 |
155.0 |
450 |
18 |
274.3 |
0
-0.7 |
263.4 |
0
-0.7 |
340.0 |
0
-2 .0 |
276.0 |
+0.7
0 |
265.1 |
+0.7
0 |
172.5 |
500 |
20 |
296.0 |
285.1 |
375.0 |
297.7 |
286.8 |
190.0 |
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3扣圆锥形接头及接头孔尺寸
Dimension of 3 TPI Conical Nipples |
|
公称直径(mm)
Nominal Diameter |
接头尺寸 (mm)
Size of Nipple |
接头孔尺寸 (mm)
Size of Socket |
螺距 （mm）
Thread |
mm |
inch |
D |
L |
d |
1 |
d |
H |
225 |
9 |
139.7 |
0
-0.5 |
203.2 |
0
-1 |
90.73 |
0
-5 |
<10 |
131.27 |
+0.5
0 |
107.6 |
+7
0 |
8.47 |
250 |
10 |
155.57 |
220.10 |
103.80 |
147.14 |
116.00 |
300 |
12 |
177.17 |
270.90 |
116.90 |
168.73 |
141.50 |
350 |
14 |
215.90 |
304.80 |
150.00 |
207.47 |
158.40 |
400 |
16 |
215.9 |
304．8 |
150 |
207．47 |
158．40 |
400 |
16 |
241.30 |
338.70 |
169.80 |
232.87 |
175.30 |
450 |
18 |
241.30 |
338.70 |
169.80 |
232.87 |
175.30 |
450 |
18 |
273.05 |
355.60 |
198.70 |
264.62 |
183.80 |
500 |
20 |
273.05 |
355.60 |
198.70 |
264.62 |
183.80 |
500 |
20 |
298.45 |
372.60 |
221.30 |
290.02 |
192.20 |
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4扣圆锥形接头及接头孔尺寸
Dimension of 4 TPI Conical Nipples |
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公称直径 (mm)
Nominal Diameter |
接头尺寸 (mm)
Size of Nipple |
接头孔尺寸 (mm)
Size of Socket |
螺距 (mm)
Thread |
mm |
inch |
D |
L |
d |
1 |
d |
H |
75 |
3 |
46.04 |
0
-0.5 |
76.20 |
0
-1 |
20.80 |
0
-5 |
<7 |
39.72 |
+0.5
0 |
44.10 |
+7.0
0 |
6.35 |
100 |
4 |
69.85 |
101.60 |
40.30 |
63.53 |
56.80 |
130 |
5 |
79.38 |
127.00 |
45.60 |
73.06 |
69.50 |
150 |
6 |
92.08 |
139.70 |
56.20 |
85.76 |
75.90 |
200 |
8 |
122.24 |
177.80 |
80.00 |
115.92 |
94.90 |
225 |
9 |
139.70 |
177.80 |
97.46 |
133.38 |
94.90 |
250 |
10 |
152.40 |
190.50 |
108.00 |
146.08 |
101.30 |
300 |
12 |
177.80 |
215.90 |
129.20 |
171.48 |
114.00 |
350 |
14 |
203.20 |
254.00 |
148.20 |
196.88 |
133.00 |
400 |
16 |
222.25 |
304.80 |
158.80 |
215.93 |
158.40 |
400 |
16 |
222.25 |
355.60 |
150.00 |
215.93 |
183.80 |
450 |
18 |
241.30 |
304.80 |
177.90 |
234.98 |
158.40 |
450 |
18 |
241.30 |
355.60 |
169.42 |
234.98 |
183.80 |
500 |
20 |
269.88 |
355.60 |
198.00 |
263.56 |
183.80 |
500 |
20 |
269.88 |
457.20 |
181.08 |
263.56 |
234.60 |
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普通功率石墨电极理化指标
Specifications of Regular Power Graphite Electrodes |
项 目
Item |
单位
Unit |
公 称 直 径 Nominal Diameter (mm) |
75-130 |
150-225 |
250-300 |
350-500 |
优级HG |
一级FG |
优级HG |
一级FG |
优级HG |
一级FG |
优级HG |
一级FG |
电阻率不大于
Electrical Resistivity Max |
电极Electrode |
μΩm |
8.0
|
8.5
|
8.0
|
8.5
|
8.0
|
8.5
|
8.0
|
8.5
|
| 接头Nipple |
6.5
|
6.5
|
6.5
|
6.5
|
抗折强度不小于
Flexural Strength Min |
电极Electrode |
MPa |
11.0
|
11.0
|
11.0
|
11.0
|
接头Nipple |
14.0
|
14.0
|
14.0
|
14.0
|
弹性模量 不大于
Elastic Modulus Max |
电极Electrode |
GPa |
9.3
|
9.3
|
9.3
|
9.3
|
接头Nipple |
14.0
|
14.0
|
14.0
|
14.0
|
体积密度 不小于
Bulk Density Min |
电极Electrode
接头Nipple |
g/cm3 |
1.56
|
1.56
|
1.55
|
1.55
|
| 1.68
|
1.68
|
1.68
|
1.68
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热膨胀系数 不大于
C.T.E. Max |
电极Electrode |
10-6/°C |
2.7
|
2.7
|
2.7
|
2.7
|
接头Nipple |
2.5
|
2.5
|
2.5
|
2.5
|
灰分 不大于
Ash Max |
电极Electrode |
% |
0.5
|
0.5
|
0.5
|
0.5
|
接头Nipple |
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浸渍/高体密石墨电极理化指标
Specifications of Impregnated/High Density Graphite Electrodes |
项 目
Item
|
单位
Unit |
公 称 直 径 Nominal Diameter (mm) |
75-225 |
250-350 |
400-500 |
优级HG |
一级FG |
优级HG |
一级FG |
优级HG |
一级FG |
电阻率 不大于
Electrical Resistivity Max |
电极Electrode |
μΩm |
6.5 |
7.0 |
6.5 |
7.0 |
6.5 |
7.0 |
接头Nipple |
5.5 |
5.5 |
5.5 |
抗折强度不小于
Flexural Strength Min |
电极Electrode |
MPa |
12.0 |
11.0 |
11.0 |
接头Nipple |
14.0 |
14.0 |
14.0 |
弹性模量不大于
Elastic Modulus Max |
电极Electrode |
GPa |
12.0 |
12.0 |
12.0 |
接头Nipple |
14.0 |
14.0 |
14.0 |
体积密度不小于
Bulk Density Min |
电极Electrode |
g/cm3 |
1.65 |
1.65 |
1.65 |
接头Nipple |
1.73 |
1.73 |
1.73 |
热膨胀系数不大于
C.T.E. Max |
电极Electrode |
10-6/°C |
2.5 |
2.5 |
2.5 |
接头Nipple |
2.2 |
2.2 |
2.2 |
灰分 不大于
Ash Max |
电极Electrode |
% |
0.3 |
0.3 |
0.3 |
接头Nipple |
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高功率石墨电极理化指标
Specifications of High Power Graphite Electrodes |
项 目
Item
|
单位
Unit |
公 称 直 径 Nominal Diameter (mm) |
200-400 |
450-500 |
电阻率 不大于
Electrical Resistivity Max |
电极Electrode |
μΩm |
6.5 |
6.5 |
接头Nipple |
5.0 |
5.0 |
抗折强度 不小于
Flexural Strength Min |
电极Electrode |
MPa |
12.0 |
12.0 |
接头Nipple |
14.0 |
14.0 |
弹性模量 不大于
Elastic Modulus Max |
电极Electrode |
GPa |
12.0 |
12.0 |
接头Nipple |
16.0 |
16.0 |
体积密度 不小于
Bulk Density Min |
电极Electrode |
g/cm3 |
1.65 |
1.65 |
接头Nipple |
1.75 |
1.75 |
热膨胀系数 不大于
C.T.E. Max |
电极Electrode |
10-6/°C |
2.2 |
2.2 |
接头Nipple |
2.0 |
2.0 |
灰分 不大于
Ash Max |
电极Electrode |
% |
0.3 |
0.3 |
接头Nipple |
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普通功率、浸渍/高体密石墨电极允许电流负荷
Current-Carrying Capacities of Regular Power, Impregnated/High Density Graphite Electrodes |
公称直径 (mm)
Nominal Diameter |
普通功率石墨电极（Regular Power） |
浸渍石墨电极（Impregnated） |
允许电流负荷 (A)
Current-Carrying Capacity |
电流密度 (A/cm2)
Current Density |
允许电流负荷 (A)
Current-Carrying Capacity |
电流密度 (A/cm2)
Current Density |
75 |
1 000―1 400 |
22―31 |
1 300-2 000 |
29―45 |
100 |
1 500―2 400 |
19―30 |
1 800-3 000 |
22―37 |
130 |
2 200―3 400 |
17―26 |
2 800-4 200 |
21―31 |
150 |
3 000―4 500 |
16―25 |
4 000-5 000 |
22―28 |
200 |
5 000―6 900 |
15―21 |
4 800-9 000 |
15―28 |
250 |
7 000―10 000 |
14―20 |
8 000-12 000 |
16―24 |
300 |
10 000―13 000 |
14―18 |
11 000-16 000 |
15―22 |
350 |
13 500―18 000 |
14―18 |
15 000-22 000 |
15―22 |
400 |
18 000―23 500 |
14―18 |
20 000-28 000 |
15―22 |
450 |
22 000―27 000 |
13―17 |
24 000-34 000 |
15―21 |
500 |
25 000―32 000 |
13―16 |
28 000-42 000 |
13―20 |
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高功率、超高功率石墨电极允许电流负荷
Current-Carrying Capacities of High Power, Ultra High Power Graphite Electrodes |
公称直径 (mm)
Nominal Diameter
|
高功率石墨电极（High Power） |
超高功率石墨电极（Ultra High Power） |
允许电流负荷 (A)
Current-Carrying Capacity |
电流密度 (A/cm2)
Current Density |
允许电流负荷 (A)
Current-Carrying Capacity |
电流密度 (A/cm2)
Current Density |
75 |
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100 |
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130 |
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150 |
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200 |
5 500-9 000 |
18-28 |
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250 |
8 000-13 000 |
18-25 |
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300 |
13 000-17 400 |
17-24 |
15 000-22 000 |
20-30 |
350 |
17 400-24 000 |
17-24 |
20 000-30 000 |
20―30 |
400 |
21 000-31 000 |
16-24 |
25 000-40 000 |
19―30 |
450 |
25 000-40 000 |
15-24 |
32 000-45 000 |
19―27 |
500 |
30 000-48 000 |
15-24 |
38 000-55 000 |
18-27 |
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Electrodes with pre-set nipples are packed in wooden crates, nipples and threads are protected from mechanical damage by shields made of plywood, nipples also can be packed in wooden cases with cardboards partition as per customer's requirements. Packages outside are braced strongly with steel strip with inner plastic preventing water and dust to be seaworthy shipping. |
Use of Graphite Electrodes
1. Refer to the Current-Carrying Capacity of Electrodes to determine whether the diameter and grade of raphite electrodes are suitable for electric arc furnaces.
2. The graphite electrodes must be kept away from getting damped or wetted by rain, snow and water when transported and stored. Otherwise, be sure to dry them up before use
3. During loading, unloading and transportation, the graphite electrodes must be handled with great care to well protect the threads from being damaged in case of collision. It is better to use special hoist equipment to prevent the graphite electrodes being spoiled when been slant-hoisting.
4. Before the new electrodes are connected to the nipples, it is necessary to blow the electrode threads completely clean with compressed air and lost and damaged pitch plugs must be replaced.
5. When elevating the electrodes, it is not allowed to move in order to avoid the nipple split.
6. The grip must not hold the electrode near the area of nipple sockets.
7. Stuffing the furnace，put the coarse scrap steel lumps at the bottom and the small ones at the top. The electrodes should be lifted at times according to the smelting conditions to avoid being broken off by collapses. |
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