Technical Parameter
|
Item |
Unit |
UHP |
UHP Nipple |
|
550mm / 22inch |
|||
|
Bulk Density |
g/cm3 |
1.68-1.75 |
1.80-1.85 |
|
Resistivity |
μΩm |
4.5-5.8 |
3.0-4.3 |
|
Flexual Strength |
MPa |
10.0-14.0 |
20.0-30.0 |
|
Elastic Modulus |
GPa |
8.0-10.0 |
16.0-20.0 |
|
CTE (30-600) |
10-6/℃ |
≤1.5 |
≤1.3 |
|
Ash Content |
% |
≤0.3 |
≤0.3 |
Shida company’s competitive advantages
1.Shida Carbon built in 1990 with over 30 years of professional experience as manufacturer of graphite electrode.
2. The strong researching and developing team and highly competent sales team are established by Shida to guarantee stable quality of the product, especially the large diameters, such as UHP 650, UHP700, and provide customers with a comprehensive range of sale services.
The introduction of graphite electrode work in Electric arc furnace for steel making
Electric arc furnace (EAF) for steel making is the big and major customer of graphite electrodes. In China, the EAF steel output accounts for around 18% of total crude steel output. Graphite electrodes for steel making accounts for 70-80% of the total amount of graphite electrodes application. By passing a high voltage and current to graphite electrode, electric arc will be generated between electrode tip and metal scrap which will produce huge heat to melt the scrap. The process of smelting will consume the graphite electrode, and they have to be replaced constantly.
Diagram of an electric arc furnace
Socket and Nipple Dimensions(4TPI)
|
Nominal Diameter(mm) |
Nipple Type |
Pitch Socket Diameter |
Major Nipple Diameter |
Nipple Length |
Socket Depth |
Socket Thread Length |
|
500 |
269T4N |
266.72 |
269.88 |
355.60 |
183.80 |
179.80 |
|
269T4L |
266.72 |
269.88 |
457.20 |
234.60 |
230.60 |
|
|
550 |
298T4N |
295.29 |
298.45 |
355.60 |
183.80 |
179.80 |
|
298T4L |
295.29 |
298.45 |
457.20 |
234.60 |
230.60 |
|
|
600 |
317T4N |
314.34 |
317.50 |
355.60 |
183.80 |
179.80 |
|
317T4L |
314.34 |
317.50 |
457.20 |
234.60 |
230.60 |
|
|
650 |
355T4L |
352.44 |
355.60 |
558.80 |
285.40 |
281.40 |
|
700 |
374T4L |
352.44 |
374.65 |
558.80 |
285.40 |
281.40 |
