1.Company Profile:
RONGXING GROUP is specialized in R&D, manufaturing and marketing of various graphite electrode.
The company was established in 1992, which is one of the earlist and biggest suppliers of high-quality graphiteelectrode and carbon products in China.
The company has a production capacity of 30,000 tons of graphite electrode, 150,000 tons of refined petroleumcoke, 100,000 tons of pre-baked anode, 50,000 tons of carbon brick, 200,000 tons of electrode paste, special sealing paste, 50,000 tons of refractory material.
2. Graphite Electrode
Regular powder electrode RP, high-power electrode HP,
ultra-high-power electrode UHP...
Uses: used in steel, metallurgy industries.
Length: 1800-2700mm
Diameter: 200-600mm
Property
1. Low resistivity
2. Good conductivity
3. Low ash
4. Compact and uniform structure
5. Good oxidation resistance
6. Mechanical strength
3. Graphite Electrode SPEC
Item |
Unit |
Graphite Electrode |
| RP |
HP |
UHP |
φ300-φ800m
m |
φ300-φ800m
m |
φ300-φ500m
m |
φ550-φ800m
m |
| Typical Value |
Typical Value |
Typical Value |
Typical Value |
Resistivity |
Electrode |
μΩm |
7.0-10.0 |
5.8-6.6 |
4.8-5.8 |
4.6-5.8 |
| Nipple |
4.0-4.5 |
3.5-4.0 |
3.5-4.0 |
3.5-4.0 |
Modulus of Rupture |
Electrode |
Mpa |
8.0-10.0 |
10.0-13.0 |
10.0-14.0 |
10.0-14.0 |
| Nipple |
19.0-22.0 |
20.0-23.0 |
20.0-24.0 |
22.0-26.0 |
Young's Modul us |
Electrode |
GPa |
7.0-9.3 |
8.0-12.0 |
9.0-13.0 |
10.0-14.0 |
| Nipple |
12.0-14.0 |
14.0-16.0 |
15.0-18.0 |
16.0-19.0 |
Bulk Density |
Electrode |
g/cm3 |
1.53-1.56 |
1.64-1.68 |
1.68-1.74 |
1.68-1.74 |
| Nipple |
1.70-1.74 |
1.75-1.80 |
1.78-1.82 |
1.78-1.84 |
CTE (100-600
ºC) |
Electrode |
10-6/ºC |
2.2-2.6 |
1.6-1.9 |
1.1-1.4 |
1.1-1.4 |
| Nipple |
2.0-2.5 |
1.1-1.4 |
0.9-1.2 |
0.9-1.2 |
| Ash |
% |
0.5 |
0.3 |
0.3 |
0.3 |
4. Our Graphite electrode advantage
High output, with an annual output of 50,000 tons
Having vast inventory
Needle coke content accounts for 80%, raw materials imported from Japan and South Korea
High temperature strength
Low thermal expansion
Good thermal and electrical conductivity
Appropriate machinability capability
5. Graphite electrode application
6.Customers visiting
Being hard and brittle, artificial graphite electrode shall be specially handled. Proper operation may reduce the consumption and cost.
A, Use special hoist tools to hoist graphite electrode. It is strictly forbidden to prize electrode ends up with crowbar. It must be handled with great care during transportation to avoid damage.
B, Graphite electrode must be kept away from being moistened or wetted by rain, snow and water, and must be kept dry. It must be dried in the furnace before use. The drying temperature in the furnace shall be less then 100ºC.The drying period shall be not less than 48 hours.
C, Not to be stored up near clay,slag etc.to avoid surface pollution and increasing resistivity.
D, Carefully checking before connection, make sure that the socked and nipple thread is not damaged, nipple pitch plug is in. Nipple screw shall not be damaged during lifting.
E, Blow the nipple and socket threads with compressed air.
F,Graphite electrode must be connected contacted closely and straightly.Use moment spanner for connecting electrode with suitable force.The gap between electrodes shall less than 0.4mm.
G, The holding device must hold the electrode tightly,good contact and no arc.Otherwise,the connecting area will get red and oxidized and thin,leading breakage.
H, Threaded portion of nipple socket shall not be damaged during hoisting by metal plug.Hoisting plug shall spin out and keep nipple socket clean.
I, Lifting device of electrode must move stably when moving electrode.carefully check the position of furnace cover after being repaired.To seal the cover with refractory to prevent up electrode from being oxidized by fire.
J, The holding device of electrode shall hold the electrode beyond the socket area.
For charging the furnace, the large scrap should be put at the bottom, the small one on the top, Charge material with low electric conductivity shall not been put on the top. In the course of melting, un-melted material shall be taken in time to avoid electrode breaking by falling material.
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