|
Item |
Unit |
Norminal Diameter |
||||||
|
UHP |
HP |
RP |
||||||
|
≤Φ400 |
≥Φ450 |
≤Φ400 |
≥Φ450 |
≤Φ300 |
≥Φ350 |
|||
|
Resistance |
E |
μΩ·m |
≤5.5 |
≤6.5 |
≤8.5 |
|||
|
N |
≤4.5 |
≤5.5 |
≤6.5 |
|||||
|
Bending Strength |
E |
MPa |
≥11.0 |
≥10.5 |
≥9.8 |
≥8.5 |
≥7.0 |
|
|
N |
≥20.0 |
≥16.0 |
≥15.0 |
|||||
|
Elastic Modulus |
E |
GPa |
≤14.0 |
≤12.0 |
≤9.3 |
|||
|
N |
≤18.0 |
≤16.0 |
≤14.0 |
|||||
|
Bulk Density |
E |
g/cm3 |
≥1.66 |
≥1.67 |
≥1.62 |
1.60 |
≥1.53 |
≥1.52 |
|
N |
≥1.75 |
≥1.73 |
≥1.69 |
|||||
|
CTE. |
E |
10-6/℃ |
≤1.5 |
≤2.4 |
≤2.9 |
|||
|
N |
≤1.4 |
≤2.2 |
≤2.8 |
|||||
|
Ash |
% |
≤0.3 |
≤0.3 |
≤0.5 |
||||
Graphite electrode to allow the current load and current density (recommended)
|
Norminal Diameter |
RP |
HP |
UHP |
|||
|
mm |
Current load A |
Current Density A/cm2 |
Current load A |
Current Density A/cm2 |
Current load A |
Current Density A/cm2 |
|
200 |
5000-6900 |
15-21 |
5500-9000 |
18-25 |
|
|
|
250 |
7000-10000 |
14-20 |
8000-13000 |
18-25 |
9200-15100 |
21-30 |
|
300 |
10000-13000 |
14-18 |
13000-17400 |
17-24 |
13000-22000 |
20-30 |
|
350 |
13500-18000 |
14-18 |
17400-24000 |
17-24 |
20000-30000 |
20-30 |
|
400 |
18000-23500 |
14-18 |
21000-32000 |
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 |
48000-60000 |
18-24 |
|
600 |
38000-47000 |
13-16 |
44000-67000 |
15-23 |
52000-72000 |
18-24 |
|
700 |
45000-54000 |
13-16 |
54000-73000 |
15-23 |
62000-95000 |
18-24 |
Cone size of graphite electrode joints
Unit: mm
|
Diameter |
Nipple |
Socket |
Pitch |
||||||
|
D |
d2 |
L |
l |
d1 |
H |
||||
|
Tolerance: |
≤ |
Tolerance: |
|||||||
|
|
mm |
in |
(-0.30~0) |
(-0.30~0) |
(-1~0) |
(0~0.3) |
(0~7) |
8.47 |
|
|
3TPI |
225 |
9″ |
139.70 |
91.22 |
203.20 |
7 |
141.22 |
107.60 |
|
|
250 |
10″ |
155.57 |
104.20 |
220.00 |
157.09 |
116.00 |
|||
|
300 |
12″ |
177.16 |
117.39 |
270.90 |
148.68 |
141.50 |
|||
|
350 |
14″ |
215.90 |
150.48 |
304.80 |
217.42 |
158.40 |
|||
|
400 |
16″ |
215.90 |
150.48 |
304.80 |
217.42 |
158.40 |
|||
|
400 |
16″ |
241.30 |
170.23 |
338.70 |
242.82 |
175.30 |
|||
|
450 |
18″ |
241.30 |
170.23 |
338.70 |
242.82 |
175.30 |
|||
|
450 |
18″ |
273.05 |
199.17 |
355.60 |
274.57 |
183.80 |
|||
|
500 |
20″ |
273.05 |
199.17 |
355.60 |
274.57 |
183.80 |
|||
|
500 |
20″ |
298.45 |
221.73 |
372.60 |
299.97 |
192.20 |
|||
|
550 |
22″ |
298.45 |
221.73 |
372.60 |
299.97 |
192.20 |
|||
|
600 |
24″ |
336.55 |
245.73 |
457.30 |
338.07 |
234.60 |
|||
|
3TPIL |
350 |
14″ |
215.90 |
144.85 |
338.70 |
217.42 |
175.30 |
||
|
400 |
16″ |
241.30 |
167.43 |
355.60 |
242.82 |
183.80 |
|||
|
450 |
18″ |
273.05 |
182.23 |
457.30 |
274.57 |
234.60 |
|||
|
4TPI |
200 |
8″ |
122.24 |
81.48 |
177.80 |
7 |
115.92 |
94.90 |
6.35 |
|
225 |
9″ |
139.70 |
98.94 |
177.80 |
133.38 |
94.90 |
|||
|
250 |
10″ |
152.40 |
109.52 |
190.50 |
146.08 |
101.30 |
|||
|
300 |
12″ |
177.80 |
130.69 |
215.90 |
171.48 |
114.00 |
|||
|
350 |
14″ |
203.20 |
149.74 |
254.00 |
196.88 |
133.00 |
|||
|
400 |
16″ |
222.25 |
160.32 |
304.80 |
215.93 |
158.40 |
|||
|
450 |
18″ |
241.30 |
179.37 |
304.80 |
234.98 |
158.40 |
|||
|
500 |
20″ |
269.88 |
199.49 |
355.60 |
263.56 |
183.80 |
|||
|
550 |
22″ |
298.45 |
228.06 |
355.60 |
292.13 |
183.80 |
|||
|
600 |
24″ |
317.50 |
247.11 |
355.60 |
311.18 |
183.80 |
|||
|
650 |
26″ |
355.60 |
268.27 |
457.20 |
349.28 |
234.60 |
|||
|
700 |
28″ |
374.65 |
287.32 |
457.20 |
368.33 |
234.60 |
|||
|
4TPIL |
300 |
12″ |
177.80 |
124.34 |
254.00 |
171.48 |
133.00 |
||
|
350 |
14″ |
203.20 |
141.27 |
304.80 |
196.88 |
158.40 |
|||
|
400 |
16″ |
222.25 |
151.86 |
355.60 |
215.93 |
183.80 |
|||
|
450 |
18″ |
241.30 |
170.91 |
355.60 |
234.98 |
183.80 |
|||
|
500 |
20″ |
269.88 |
182.55 |
457.20 |
263.56 |
234.60 |
|||
|
550 |
22″ |
298.45 |
211.12 |
457.20 |
292.13 |
234.60 |
|||
|
600 |
24″ |
317.50 |
230.17 |
457.20 |
311.18 |
234.60 |
|||
|
650 |
26″ |
355.64 |
251.38 |
558.80 |
349.28 |
285.40 |
|||
|
700 |
28″ |
374.65 |
270.39 |
558.80 |
368.33 |
285.40 |
|||












