Hotline：+86-533-3889469 E-mail : hairu@hrgraphite.com
Welcome to HaiRu Foreign Trade Co., Ltd official website
Address: 7F, Block C, Guomao Building, Liuquan Road, Zhangdian, Zibo, Shandong, China
Tel: +86-533-3889469 Fax: +86-533-3889469
Copyright © 2018 HaiRu Foreign Trade Co., Ltd. All Rights Reserved.
PRODUCTS
UHP graphite electrode
PRODUCT DESCRIPTION
Graphite electrode is made of high quality calcined petroleum coke and imported needle petroleum coke. It is manufactured through the process of calcining, dosing, mixing, forming, baking, impregnating, graphitization in a high temperature of over 3000°c, and then machining.
Graphite electrode has the advantages of low electrical resistance, low ash content, high mechanical strength, high resistance for abrupt change of temperature and high-yield in melting process.
APPLICATION
Widely used in Electric Arc Furnace, Ladle Furnace, Mineral-heated Furnace for steel-making and other metallic or non-metallic materials, such as silicon, phosphorus, etc.
GRADES:
RP, HP, SHP, UHP grade
DIAMETER:
150mm, 200mm, 225mm, 250mm, 300mm, 350mm, 400mm, 450mm., 500mm, 550mm, 600mm, other sizes can be also customized by the requirements.
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1) PHYSICAL PROPERTIES:
|
Physical Properties |
RP Grade |
HP Grade |
UHP Grade |
|
|
Specific Resistance |
Electrode |
8.0 |
7.0 |
6.2 |
|
Nipple |
6.5 |
5.5 |
5.0 |
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|
Bending Strength |
Electrode |
11.0 |
12.0 |
11.0 |
|
Nipple |
14.0 |
14.0 |
18.0 |
|
|
Elastic Modulus |
Electrode |
9.0 |
12.0 |
12.0 |
|
Nipple |
12.0 |
14.0 |
16.0 |
|
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Bulk Density |
Electrode |
1.56-1.60 |
1.65-1.70 |
1.66-1.72 |
|
Nipple |
1.70-1.72 |
1.72-1.74 |
1.75-1.82 |
|
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C.T.E (max) ×10-6/C |
Electrode |
2.7 |
2.5 |
1.5 |
|
Nipple |
2.5 |
2.2 |
1.4 |
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Ash (max) % |
Electrode |
0.30 |
0.30 |
0.20 |
|
Nipple |
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2) SIZE & TOLERANCE:
|
Diameter |
Length |
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Nominal Diameter |
Actual Diameter |
Nominal Length |
Tolerance |
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|
mm |
inch |
Max. |
Min. |
mm |
Length (mm) |
Short Length (mm) |
|
150 |
6 |
154 |
149 |
1600 |
+/-100 |
-275 |
|
200 |
8 |
205 |
200 |
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225 |
9 |
230 |
225 |
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250 |
10 |
256 |
251 |
(1600) |
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300 |
12 |
307 |
302 |
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350 |
14 |
357 |
352 |
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400 |
16 |
409 |
403 |
(1600) 1800 2000 2200 2400 |
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450 |
18 |
460 |
454 |
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500 |
20 |
511 |
505 |
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550 |
22 |
562 |
556 |
1800 2100 2400 |
+/-100 |
-275 |
|
600 |
24 |
613 |
607 |
1800 2100 2400 2700 |
+/-100 |
-275 |
3) CURRENT CARRYING CAPACITY:
|
Nominal Diameter |
Regular Power(RP) |
High Power(HP) |
Ultra High Power(UHP) |
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|
mm |
inch |
Current carrying capacity (A) |
Current density (A/cm2) |
Current carrying capacity (A) |
Current density （A/cm2） |
Current carrying capacity (A) |
Current density （A/cm2） |
|
150 |
6 |
3000-4500 |
16-25 |
|
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200 |
8 |
5000-6900 |
15-21 |
5500-9000 |
18-25 |
|
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225 |
9 |
6000-8000 |
14-20 |
6500-10000 |
18-25 |
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250 |
10 |
7000-10000 |
14-20 |
8000-13000 |
18-25 |
|
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300 |
12 |
10000-13000 |
14-18 |
13000-17400 |
17-24 |
15000-22000 |
20-30 |
|
350 |
14 |
13500-18000 |
14-18 |
17400-24000 |
17-24 |
20000-30000 |
20-30 |
|
400 |
16 |
18000-23500 |
14-18 |
21000-31000 |
16-24 |
25000-40000 |
19-30 |
|
450 |
18 |
22000-27000 |
13-17 |
25000-40000 |
15-24 |
32000-45000 |
19-27 |
|
500 |
20 |
25000-32000 |
13-16 |
30000-48000 |
15-24 |
38000-55000 |
18-27 |
PACKING:
Electrodes are packed in wooden crates and nipples in wooden cases; or packed pre-set as customer's requirements, inner plastic to prevent water and dust, and braced strongly with steel strip to be suitable for land and sea transportation.
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