| Customization: | Available |
|---|---|
| Name: | Graphite Heater Elements |
| Type: | Graphite Mold |
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Company Profile
Established in 2017, located in Fengxin Industrial Area, Yichun City, Jiangxi Province, China, Jiangxi Ningheda New Material Co., Ltd. is the subsidiary company of Jiangxi Ningxin New Material Co., Ltd.
Jiangxi Ningxin New Material Co., Ltd. is an enterprise which specializes in R&D, production and sale of special graphite. The total investment is RMB 180 million. It covers an area of more than 70000 square meters and produces 10000 tons of special graphite annually, which makes Ningxin to be the leading enterprise in the domestic industry. 
On November 8th, 2016, Ningxin was listed of Chinese new third board. The stock abbreviation is Ningxin New Material, and stock code is 839719.
Jiangxi Ningheda New Material Co., Ltd. is mainly engaged in graphite product processing, graphite product matching service, providing graphite materials, graphite electrode and graphite products for the lithium industry, rare earth industry, machinery industry, aerospace, semiconductor and solar photovoltaic industry, together with the corresponding products technical service and technical application of update program.
With excellent production technology, good customer service, high market share, and relying on the advantage of new material, capital and management of parent company (Jiangxi Ningxin New Material Co., Ltd.), Jiangxi Ningheda New Material Co., Ltd. develops quickly. We devote to the extension of the special graphite industry chain, and make contributions for building the future whole graphite industry strategy.
Ningheda Graphite Technical Characteristic:
| 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 |
Advantages of Ningheda graphite raw material
1. The processing materials are ultrafine granule structure, high purity and graphite with high graphitization degree.
2. High hardness, good anti-oxidation performance and high machining accuracy
3. Good conductivity, high resistivity, sufficient mechanical strength
4. Small porosity and dense structure.
5. Excellent thermal shock resistance, conductive and thermal conductivity.
6. High temperature resistance, corrosion resistance, acid and alkali resistance, good wear resistance.
7. Surface can be treated with anti-oxidation.
What is Graphite heater / graphite heating element?
Graphite heater / graphite heating elements are used frequently in high-temperature vacuum sintering furnaces and are also widely used. In high temperature furnaces, graphite parts can be used in vacuum sintering furnaces, graphitization furnaces, vacuum brazing furnaces, intermediate frequency vacuum induction furnaces, high temperature heat treatment furnaces, etc.
The graphite heating element is the core part of the high-temperature vacuum sintering furnace, and its quality directly affects the performance and operating cost of the high-temperature vacuum sintering furnace. The design of the thermal field of graphite heating element is varied, which specific design choice is mainly based on the specific analysis of the process flow. The graphite heating element of most high-temperature vacuum sintering furnaces includes four main components: heaters and their connecting parts, heat insulation parts (or reflection screens), thermal field supporting parts, and workpiece carrying hearth. These accessories often need to be replaced regularly due to material problems or time problems.
The advantages of graphite heating element are as follows:
1. The graphite in the high temperature vacuum sintering furnace has good thermal conductivity and electrical conductivity. Compared with ordinary materials, the thermal conductivity is quite high. It is 4 times higher than stainless steel, 2 times higher than carbon steel, and 100 times higher than ordinary non-metallic.
2. The graphite in the high-temperature vacuum sintering furnace has a low temperature resistance coefficient, low thermal inertia, and can be quickly heated and cooled. There are no special requirements during the processing of the workpiece.
3. The high-temperature strength of graphite in high-temperature vacuum sintering furnace is good, and the strength of graphite is much worse than that of metal at normal temperature.
4. It has the advantages of high temperature resistance, no deformation, impact resistance, large radiation area, good flexibility and easy processing and installation. In terms of electrical performance, it is easy to manufacture large heating elements, which can increase the voltage and reduce the current. This can save heat loss.
5. Graphite is easy to extract and cheaper than metal.6. Graphite in high-temperature vacuum sintering furnace has some properties of metal and ceramic, good thermal conductivity, good thermal conductivity, but has multiple spaces and small thermal expansion coefficient.
Instructions for use of graphite boat / graphite box
1. The columns of the graphite box must be vertical and stable: the columns of the graphite box must be supported by fire-resistant clips to prevent them from swaying at high temperatures. The graphite box column on the outer ring shall not be inclined to the kiln wall, but may be slightly inclined to the center of the kiln.
2. After filling the kiln, seal the kiln door: the kiln door should preferably be built with refractory bricks on the inner and outer layers. The inner layer should be flush with the inner wall of the kiln wall, and the outer layer should be flush with the outer wall of the kiln wall, and each layer should be painted. Fire clay. When building the kiln door, leave a fire observation hole, and the position of the fire observation hole should be fixed every time the kiln is installed to avoid sudden high and low, large and small, which will affect the correct temperature measurement.
3. The height of the graphite box column: it should be determined according to the kiln structure and the temperature rise of various parts in the kiln. In general, the graphite box column near the vent should be lower to reduce the resistance of the flame to rise. Although the graphite box column in the middle can be taller, there should be enough space between the top of the kiln and the rising flames to converge here, and then redistribute them to the fire channels of the fire absorbing holes.
FAQ:
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.
Packing & Delivery
Packaging: export standard wooden case.
Delivery Detail: 15~30 working days after confirming order.
Sea Port: Shanghai or other port of China Mainland.
graphite heater elements from nhdgraphite
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