| Customization: | Available |
|---|---|
| Application: | Chemical Industry, Metallurgical Industry, Semiconductor Production |
| Carbon Content: | High-Carbon |
|
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What is graphite Rod?
There are two types of graphite rod, blank material (unmachined graphite rod) and finished product (machined graphite rod).
Graphite rods are often used as electric heating elements in high-temperature vacuum furnaces. The maximum operating temperature can reach 3000°C. It is easy to oxidize at high temperatures, it can only be used in neutral or reducing atmospheres and vacuum furnace. Its thermal expansion coefficient is small, thermal conductivity is large, resistivity is (8~13)×10-6 Ω·m, easier to process than SiC, MoSi2 rod, high temperature resistance, extreme cold and extreme heat resistance, good price Cheaper.
1. Superabrasives
2. Quartz and fused silica manufacturing
3. Fibre optics
4. Semiconductor production
5.Casting of ferrous/non-ferrous metals
How to choose graphite rod?
One: Choose a graphite rod with good uniformity
When it needs to appear in a vacuum furnace as an electric heating element, it is necessary to select the graphite rod for the uniform red heat performance of the heating part, because the uniform red heat performance will affect the temperature distribution in the furnace and the service life. If in the process of use, due to The red heat uniformity of the graphite rod becomes worse, which will cause its fracture.
Two: pay attention to the surface temperature
Because of the nature of the graphite rod itself, the higher the temperature, the shorter the life of the graphite rod during use. Therefore, when the surface temperature of the graphite rod exceeds a certain temperature, the oxidation rate of the graphite rod will increase and its life will be shortened. Therefore, we should try not to make the surface temperature of the graphite rod too high during use.
Three: There should be enough voltage adjustment margin
When the graphite rod is heated in the air, it will form a dense silicon oxide film on its surface, which becomes what we often call an anti-oxidation protective film, so when it is used intermittently, the temperature stability in the vacuum furnace must be ensured, so When a new graphite rod is used, the resistance value of the graphite rod will increase at a lower voltage.
Four: voltage after use
When a variety of graphite rods require a higher voltage in the later stage of use than the new rod, we should pay attention to the voltage in the later stage of use, and adjust it according to the way of voltage regulation or the way of wiring. Generally, the upper limit of the voltage in the later stage All have certain calculated values.
The above are the precautions for the use of graphite rods in the vacuum furnace. More matters will not be elaborated here. When the graphite rod needs to be used continuously, the voltage can be increased slowly to maintain its life.
| Grade | NX601 | NX602 | NX603 | NX604 | NX605 |
| Grain Size (≤μm) | 25 | 25 | 25 | 25 | 25 |
| Bulk Density (≥g/cm3) | 1.55 | 1.72 | 1.80 | 1.85 | 1.90 |
| Compressive Strength (≥MPa) |
35 | 45 | 60 | 65 | 70 |
| Flexural Strength (≥MPa) |
15 | 20 | 30 | 33 | 35 |
| Porosity (≤%) | 23 | 20 | 17 | 14 | 11 |
| Specific Resistance (≤μΩm) |
12 | 12 | 12 | 12 | 12 |
| Ash Content (≤%) | 0.08 | 0.07 | 0.06 | 0.05 | 0.03 |
| Shore Hardness | 35 | 45 | 50 | 55 | 60 |
Why choose graphite of Jiangxi Ningheda New Material Co., Ltd.?
1. Stable quality, reasonable price, efficient communication, timely delivery.
2. Many experts with more than 20 years of experience in graphite industry, we not only provide graphite products, but also provide application solutions for the corresponding industry.
3. The company's strength and scale are in a leading position in China, with emphasis on reputation and worry-free after-sales.
4. The products sell well in many countries worldwide, with rich experience in import and export, and complete various certificates to ensure that the goods reach the customer smoothly.
5. With professional designers, OEM and ODM are available.
6. Fast and convenient delivery method, which can guarantee the timeliness.
Q1. Are you a factory or trading company?
A: We are an ISO9001-Qualified processing manufacturer with 70000 square meter factory area.
Q2. Can you introduce your main products?
A: Sure.
Jiangxi Ningheda New Material Co., Ltd. mainly produces graphite products, we can offer customized shape according to customers' specific demand. Our Graphite Products, including molded graphite products, isostatic graphite products, extruded graphite products, vibration moulding graphite products. We can produce a lot of graphite products, like graphite mold, graphite casting die, graphite heating element, graphite crucible, graphite sealing ring, graphite tube, graphite rod, graphite edm, graphite block etc.
Q3.What is your MOQ?
A: 1 piece (graphite block, graphite rod, graphite box, graphite mold, graphite material, graphite seal ring, graphite crucible, graphite products, graphite sintering mold, graphite heater etc.).
Q4. Can you offer free samples?
A: Yes, usually we can offer free sample for you to check the quality, but do not afford express charge.
However, if the sample is expensive, like large size, we has to charge basic cost of the sample. And Samples delivery time will be about 3-10 days.
Q5. When can I get the price?
A: We will reply you within 24 hours after getting your detailed requirements, like size, quantity etc. If it is an urgent order, you can call us directly.
Q6. Do you accept OEM or ODM orders?
A: Yes, of course, most of our products are customized.
Q7. How about your delivery time?
A: Usually 7 to 25 days after payment.
Q8. Do you test your goods before delivery?
A: Yes, we have strict inspection system.
Q9. How do you keep long-term business relationship?
A: 1. Good quality and competitive price to ensure mutual benefit;
2. Quick reply and sincere service.
Notice: When you contact us, please show us the accurate drawing and your selected graphite material information, then we can offer you accurate price.
Packaging: export standard wooden case.
Delivery Detail: 15~30 working days after confirming order.
Sea Port: Shanghai or other port of China Mainland.
Self-Lubricant Molded Graphite Rod Graphite Tube From Jiangxi for Semiconductor production
For more details, pls contact Alisa!
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