weizhou International Co., Ltd
P. O. Box 1394 kaohsiung City. Taiwan ROC
Tel : 886-7-7169249 fax : 886-7-7169250
e-mail : steel@weitronic.com.tw e-Mail : shiu@ksts.seed.net.tw
http://www.weizhou.com.tw/Minerial/electrodes.htm
石墨電極棒 & 炭素電極棒
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Technical
Properties of Graphite Electrodes
YB4088-92 QBJ/LT06-17
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Items |
Unit |
NoMin..al Diameter(mm) |
||||||
|
Regular Power |
Impregnated Electrodes |
|||||||
|
75-130 |
150-200 |
250-350 |
400-500 |
150-500 |
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Electrode |
﹛ |
8.5 |
9.0 |
9.0 |
9.0 |
8 |
|
8.5 |
8.5 |
8.5 |
8.5 |
7 |
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Electrode Nipple |
Mpa |
9.8 |
9.8 |
7.8 |
6.4 |
9.8 |
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12.7 |
12.7 |
12.7 |
12.7 |
14.0 |
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Electrode Nipple |
Gpa |
9.3 |
9.3 |
9.3 |
9.3 |
12.0 |
|
13.7 |
13.7 |
13.7 |
13.7 |
14.0 |
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Electrode Nipple |
G/cm3 |
1.58 |
1.52 |
1.52 |
1.52 |
1.60 |
|
1.63 |
1.63 |
1.68 |
1.68 |
1.70 |
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Ash |
Max. |
﹛ |
% |
0.5 |
0.5 |
0.5 |
0.5 |
0.3 |
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Electrode Nipple |
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2.9 |
2.9 |
2.9 |
2.9 |
2.2 |
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3.0 |
3.0 |
3.2 |
3.2 |
2.4 |
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Technical
Properties of Graphite Electrodes
YB4089-92 YB4090-92
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Items |
Unit |
NoMin.al Diameter(mm) |
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High Power |
Ultra High Power |
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300-500 |
400-600 |
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Electrode Nipple |
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7 |
6.5 |
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6.5 |
5.5 |
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Electrode Nipple |
Mpa |
9.8 |
10.0 |
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14.0 |
15.0 |
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Electrode Nipple |
Gpa |
12.0 |
14.0 |
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14.0 |
15.0 |
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Electrode Nipple |
G/cm3 |
1.62 |
1.65 |
|
1.70 |
1.70 |
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Ash |
Max. |
﹛ |
% |
0.3 |
0.3 |
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Electrode Nipple |
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2.2 |
1.40 |
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2.4 |
1.60 |
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Specifications & Allowance of Graphite Electrodes
|
Diameter |
Length |
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|
Diameter |
Actual Diameter |
Length |
Allowance mm |
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inch |
mm |
Max. |
Min. |
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3 |
75 |
77 |
74 |
1000 |
+50 -75 |
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4 |
100 |
102 |
99 |
1200 |
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51/8 |
130 |
131 |
128 |
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6 |
150 |
154 |
151 |
1600 |
﹛ ﹛ ﹛ ﹛ ㊣100 |
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8 |
200 |
204 |
201 |
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10 |
250 |
256 |
252 |
1600 1800 |
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12 |
300 |
307 |
303 |
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14 |
350 |
357 |
353 |
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16 |
400 |
408 |
404 |
1800 2000 |
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18 |
450 |
459 |
455 |
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20 |
500 |
510 |
506 |
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22 |
550 |
561 |
557 |
2000-2500 |
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24 |
600 |
612 |
608 |
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Current Carrying Capacity and Current Density of Graphite Electrodes
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NoMin.al Diameter mm |
Regular Power |
High Power |
Ultra High Power |
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|
Current
Carrying Capacity |
Current
Density |
Current
Carrying Capacity |
Current
Density |
Current
Carrying Capacity |
Current
Density |
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75 |
1000-1400 |
22-31 |
﹛ |
﹛ |
﹛ |
﹛ |
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100 |
1500-2400 |
19-30 |
﹛ |
﹛ |
﹛ |
﹛ |
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130 |
2200-3400 |
17-26 |
﹛ |
﹛ |
﹛ |
﹛ |
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150 |
3000-4500 |
16-25 |
﹛ |
﹛ |
﹛ |
﹛ |
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200 |
5000-6900 |
15-21 |
﹛ |
﹛ |
﹛ |
﹛ |
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250 |
7000-10000 |
14-20 |
﹛ |
﹛ |
﹛ |
﹛ |
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300 |
10000-13000 |
14-18 |
13000-17400 |
17-24 |
﹛ |
﹛ |
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350 |
13500-18000 |
14-18 |
17400-24000 |
17-24 |
﹛ |
﹛ |
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400 |
18000-23500 |
14-18 |
21000-31000 |
16-24 |
25000-40000 |
19-30 |
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450 |
22000-27000 |
13-17 |
25000-40000 |
15-24 |
32000-45000 |
19-27 |
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500 |
25000-32000 |
13-16 |
30000-48000 |
15-24 |
38000-55000 |
18-27 |
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550 |
30000-42000 |
13-18 |
44000-58000 |
18-24 |
48000-66000 |
20-28 |
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600 |
40000-53000 |
14-19 |
52000-67000 |
18-24 |
55000-76000 |
19-27 |
Df imensions oTapered Nipples
|
﹛ |
Diameter |
Nipple mm |
Socket mm |
Pitch mm |
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|
inch |
mm |
D |
L |
d2 |
l |
d1 |
H |
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﹛ ﹛ 3TPI ﹛ ﹛ ﹛ |
10 12 14 16 18 20 22 24 |
250 300 350 400 450 500 550 600 |
155.58 177.17 215.90 241.30 273.05 298.45 298.45 336.55 |
﹛ ﹛ 0 -0.50 |
220.10 270.90 304.80 338.60 355.60 372.50 372.50 457.20 |
﹛ ﹛ 0 -1 |
103.80 116.90 150.00 169.80 198.70 221.30 221.72 245.70 |
﹛ ﹛ 0 -3 |
﹛ ﹛ 10 |
147.14 168.73 207.47 232.87 264.62 290.02 290.02 328.11 |
﹛ ﹛ +0.50 |
113.05 138.45 155.40 172.30 180.80 189.25 189.25 231.60 |
﹛ ﹛ +7 0 |
﹛ ﹛ 8.47 |
|
﹛ |
Diameter |
Nipple mm |
Socket mm |
Pitch mm |
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inch |
mm |
D |
L |
d2 |
l |
d1 |
H |
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|
﹛ ﹛ ﹛ ﹛ ﹛ 4TPI ﹛ ﹛ ﹛ |
3 4 51/8 6 8 10 12 14 16 18 20 22 24 |
75 100 130 150 200 250 300 350 400 450 500 550 600 |
46.04 69.85 79.38 92.08 122.24 152.40 177.80 203.20 222.25 241.30 269.88 298.45 317.50 |
﹛ ﹛ ﹛ ﹛ ﹛ 0 -0.50 |
76.20 101.60 127.00 139.70 177.80 190.50 215.90 254.00 304.80 304.80 355.60 355.60 355.60 |
﹛ ﹛ ﹛ ﹛ ﹛ 0 -1 |
20.80 40.30 45.60 56.20 80.00 108.00 129.20 148.20 158.80 177.90 198.00 223.36 242.41 |
﹛ ﹛ ﹛ ﹛ ﹛ 0 -3 |
﹛ ﹛ ﹛ ﹛ ﹛ ﹛ 6 |
39.72 63.53 73.06 85.76 115.92 146.08 171.48 196.88 215.93 234.98 263.56 292.13 311.18 |
﹛ ﹛ ﹛ ﹛ ﹛ +0.50 0 |
41.10 53.80 66.50 72.85 91.90 101.30 114.00 133.00 158.40 158.40 183.80 183.80 183.80 |
﹛ ﹛ ﹛ ﹛ ﹛ +7 0 |
﹛ ﹛ ﹛ ﹛ ﹛ ﹛ 6.35 |
Moment for reference for connecting nipples and electrodes
|
Diameter of Electrode |
Moment |
Diameter of Electrode |
Moment |
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In |
mm |
ft-1bs |
kgs-m |
in |
mm |
ft-1bs |
kgs-m |
|
3 |
75 |
22 |
3 |
12 |
300 |
720 |
100 |
|
4 |
100 |
43 |
6 |
14 |
350 |
1190 |
165 |
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5 |
130 |
72 |
10 |
16 |
400 |
1450 |
200 |
|
6 |
150 |
110 |
15 |
17 |
425 |
1660 |
230 |
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7 |
175 |
160 |
22 |
18 |
450 |
1800 |
250 |
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8 |
200 |
230 |
32 |
20 |
500 |
2310 |
320 |
|
9 |
225 |
330 |
45 |
22 |
550 |
2750 |
380 |
|
10 |
250 |
430 |
60 |
24 |
600 |
3110 |
430 |
Directions for
use of graphite electrodes
1. When choosing diameter of the graphite electrodes for electric
steel-making furnace, please refer to the current carrying capacity of the
electrodes.
2. The transport and storage of the graphite electrodes must be kept away from being moistened or wetted by rain, snow and water. Be sure to dry them up before use.
3. During loading, unloading and transportation, the graphite electrodes must be handled with great care to protect the threads from being damaged by collision. in the course of loading, unloading and hoisting, it is advisable to use special hoist tools.
4. Before the electrodes are connected to the nipples, it is necessary to blow the electrode threads thoroughly clean with compressed air and screw the nipples tightly according to requirement for using moment spanner.
5. The terMinal faces or the two electrodes tightly screwconnected must be kept in close contact.
6. When the elevator of the electric arc furnace is hoisting the electrodes, no swinging so as to avoid the electrode joints being loosened and dislocated .
7. The holder devices of the electrodes should not hold the electrodes near the area of nipple sockets.
8. In order to prevent the breakage of the electrodes in case of scrap cave-ins, lift the electrodes in time according to the melting conditions dump the unmelted waste steel into the pool.
9. Charging the furnace, put the large scrap steel lumps at the bottom and the small ones at the top.
10.In order to prevent dislocation after the electrodes being jointed, we provide binding paste and pins which are easily to be applied.
For making constant improvement of our electrodes quality so as to serve our customers better, please always keep us informed of your comments and requirements.
