SiC Graphite Crucibles For Gold Melting Aluminium And Copper, Brass
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- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 pc
- Supply Capability:
- 1000 pc/month
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Quick Details for SiC Graphite Crucibles For Melting Aluminium And Copper, Brass
| Type: | High Strength, graphite crucible crucible | Application: | melting metal | Height: | as your requirements |
| Composition: | High Pure | Top Diameter: | 10-600mm | Bottom Diameter: | 10-1000mm |
| Place of Origin: | China (Mainland) | Brand Name: | Model Number: | ||
| Color: | Black grey | Si3N4%: | 5min | Fe2O3%: | 0.7max |
| C%: | 30-45 | Apparent porosity: | 30max | Refractoriness: | 1680 |
| Bulk Density: | 1.71min | Using life: | >5000 hours | MAX temperature: | 1600c |
Packaging & Delivery
| Packaging Details: | Seaworty packing or as per customer's detail requirement of graphite crucible. |
| Delivery Detail: | within 20-30 days after confirm order of graphite cru |
Super Quality Long Working Life SiC Graphite Crucibles
Product Description
Specifications for Graphite Silicon Carbide Crucible For Aluminum Melting :
1.Long working lifetime: its working lifetime is increased 3-5 times over normal clay-crucible due to the compact body formed under high pressure.
2.High thermal conductivity: high-density body and low apparent porosity greatly improve its heat conductivity.
3.New-style materials: new heat conduction material ensures faster heat conductivity and pollution-free product, reduces adherent slag.
4.Resistance to corrosion:better anti-corrosion than normal clay-crucible.
5.Resistance to oxidation: advanced process dramatically improves its oxidation resistance, which ensures persistent heat conductivity and long working lifetime.
6.High-strength: high-density body and logical structure make the product better compression property.
7.Eco-friendly: energy-efficient and pollution-free, not only ensure metal product purity, but also ensure sustainable development on environment.
8.Multi-function: Can be used in induction graphite crucible furnace
Physicochemical Properties of graphite crucible:
The crucible is an utensil or melting tank vessels that is made of refractory material (such as clay, graphite, quartz or difficult molten metal iron, etc.).
Graphite crucible, with is special advantages and Plasticity, is widely used in the smelting area, e.g. gold smelting, silver smelting, aluminum smelting, cooper smelting, etc.
high pure graphite | ||||
Item | Unit | baked twice | baked three time | baked four times |
impregnated once | impregnated twice | impregnated three times | ||
grain size | mm | ≤325μm | ≤325μm | ≤325μm |
Bulk density | g/cm3 | ≥1.68 | ≥1.78 | ≥1.85 |
Specific resistance | μΩ.m | ≤14 | ≤14 | ≤13 |
Bending strength | MPa | ≥25 | ≥40 | ≥45 |
Compressive strength | MPa | ≥50 | ≥60 | ≥65 |
Ash content | % | ≤0.15 | ≤0.1 | ≤0.05 |
Fine-grain Specialty Graphite FXG-1 | Fine-grain Specialty Graphite FXG-2 | ||||
Item | Unit | Guarantee value | Typical value | Guarantee value | Typical value |
Max grain size | mm | 0.8 | 0.8 | 0.8 | 0.8 |
Bulk density | g/cm3 | ≥1.70 | 1.73 | ≥1.73 | 1.76 |
Specific resistance | μΩ.m | ≤8.5 | 7.5 | ≤8.0 | 7 |
Bending strength | MPa | ≥10.0 | 11 | ≥12.0 | 12.5 |
Compressive strength | MPa | ≥24.0 | 27 | ≥31.0 | 34 |
Thermal Condcutivity | W/(m.k) | ≥120 | 150 | ≥130 | 160 |
C.T.E.(100-600) °C | 10-6/°C | ≤2.5 | 2.2 | ≤2.5 | 2.1 |
Ash content | % | ≤0.3 | 0.09 | ≤0.3 | 0.09 |
NO | Top diameter | Bottom diameter | Height | Tolerance | Capacity(Kg5%) |
2 | 90 | 50 | 55 | 2 | 0.3 |
3 | 105 | 80 | 93 | 2 | 0.5 |
4 | 102 | 80 | 100 | 2 | 0.6 |
5 | 112 | 82 | 130 | 2 | 0.8 |
6 | 120 | 82 | 141 | 2 | 0.9 |
8 | 138 | 90 | 153 | 2 | 1.2 |
12 | 148 | 100 | 181 | 2 | 1.8 |
16 | 156 | 110 | 190 | 2 | 2.3 |
20 | 180 | 120 | 230 | 2 | 3 |
25 | 186 | 128 | 248 | 2 | 3.7 |
Packaging & Shipping
Package: Wooden case and wooden pallet or pack as customer's requirement of graphite crucible.
Delivery time: depend on distance, usually 20 days to 50days after deposit of graphite crucible.
Our Services
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FAQ
1.What's your MOQ?
We will indicate the MOQ for each item in the quotation list. We accept the sample and trail order.
2.Can I negotiate the Prices?
Sure, we may consider discounts for bulk order of products.
3.How long will it take to complete my order?
For the stock items, we can arrange the shippment within 2~3days after received your payment. For the customized items, we will indicate the delivery time in the quotation list.
4.Can you give warranty of your products?
Yes, we extend a 100% satifisfaction guarantee on all items. Please feel free to provide timely feedback if you're not satisfied with N&D's Quality and Service. For the overseas orders, if there is a quality problem, please kindly to provide the picturers to show the problem by e-mail. We will provide the replacements to you at our cost according to actual conditions.
Welcome to visit our factory.^_^
- Q:Corundum crucible and graphite crucibleSome enterprises use graphite crucibles in vacuum furnaces, while some larger ones use corundum crucibles. What I want to know is the advantages and disadvantages of corundum crucibles and graphite crucibles
- Corundum temperature limited, easily cracked at high temperature. But the chemical stability is good, do not use under vacuum. In contrast, corundum is much cheaper.
- Q:Can sintering rare earth fluorides be made of corundum crucibles?
- The main material of the graphite crucible is crystalline natural graphite. Therefore, it keeps all kinds of physical and chemical characteristics of natural graphite.That is: good thermal conductivity and high temperature resistance, in the process of high temperature use, the coefficient of thermal expansion is small, and has a certain strain resistance to hot and cold. The corrosion resistance of acid and alkaline solution is strong, and it has good chemical stability.
- Q:Who is the melting point of graphite and diamond?
- When diamond and graphite melt, the covalent bonds of C-C must be destroyed. With the C-C bond, the longer the bond length, the lower the bond energy (the length of the stick is easily broken). Therefore, the diamond bond length is larger than graphite, and the melting point is less than graphite.
- Q:How do you determine the appropriate crucible insulation for a specific application?
- To determine the appropriate crucible insulation for a specific application, factors such as the operating temperature, desired heat retention, and material compatibility need to be considered. Conducting a thorough analysis of the application requirements, including the type of material being melted or heated, the duration of the process, and any specific temperature control needs, will help in selecting the suitable crucible insulation. Additionally, considering the cost, availability, and durability of different insulation materials is crucial to make an informed decision. Consulting with experts or referring to industry guidelines can further aid in determining the most appropriate crucible insulation for a specific application.
- Q:What is the purpose of using a graphite crucible?
- The primary function of a graphite crucible is to contain and endure high temperatures in diverse industrial procedures. Graphite possesses exceptional refractory properties, which means it can withstand intense heat without easily melting or reacting with surrounding materials. This makes graphite crucibles highly suitable for tasks involving metal melting, casting, and purification. Graphite crucibles find widespread usage in foundries, laboratories, and manufacturing facilities that require temperatures surpassing the melting point of most metals. The crucible serves as a vessel for the molten metal, preventing its escape and ensuring precise control over the melting process. Moreover, graphite crucibles exhibit outstanding thermal conductivity, enabling efficient heat transfer to the substance being melted. This facilitates uniform heating and consistent melting, resulting in the production of high-quality end products. Additionally, graphite's high thermal shock resistance allows for rapid heating and cooling cycles without causing any harm to the crucible. Graphite crucibles are also chemically inert, meaning they do not react with the majority of substances. This renders them suitable for handling various corrosive materials or compounds that have the potential to react with other materials. The inert nature of graphite guarantees the preservation of the purity and integrity of the materials being processed. In conclusion, the purpose of employing a graphite crucible is to provide a long-lasting, heat-resistant, and chemically inert container for high-temperature operations such as melting, casting, and purification. The ability of graphite crucibles to endure extreme heat, exhibit excellent thermal conductivity, and remain chemically inert makes them indispensable tools in a wide array of industrial applications.
- Q:What are the advantages of using a graphite crucible over other materials?
- There are numerous benefits to utilizing a graphite crucible instead of alternative materials. To begin with, graphite possesses a high melting point, making it an ideal choice for containing and enduring high temperatures. This characteristic enables the crucible to be employed in a variety of applications, including metal casting, melting, and alloying processes. In addition, graphite exhibits exceptional thermal conductivity. Consequently, heat is evenly dispersed throughout the crucible, ensuring consistent and efficient melting or heating of the materials contained within. This attribute also diminishes the risk of thermal shock, which can cause harm to the crucible and result in contamination of the processed material. Furthermore, graphite crucibles showcase exceptional resistance to chemicals. They are highly impervious to corrosion and do not react with most metals or chemicals, guaranteeing the integrity of the processed material. This is particularly crucial in the field of metallurgy, where the crucible must endure exposure to various molten metals and alloys. Graphite crucibles also boast a lengthier lifespan when compared to alternative materials. They are remarkably durable and can endure repeated use and exposure to high temperatures without experiencing significant degradation. This extended lifespan reduces the necessity for frequent replacements, making them a cost-effective choice in the long term. Moreover, graphite crucibles are lightweight and easy to handle. This makes them convenient for usage in both industrial and laboratory settings, where frequent handling and transportation may be required. Lastly, graphite crucibles offer exceptional resistance to thermal shock. They can endure rapid temperature changes without cracking or breaking, ensuring the stability and safety of the processing environment. In conclusion, the advantages of employing a graphite crucible over alternative materials include a high melting point, excellent thermal conductivity, chemical resistance, extended lifespan, lightweight design, and resistance to thermal shock. These properties establish graphite crucibles as the preferred choice in various industries where high-temperature processing and chemical compatibility are essential.
- Q:How does the porosity of graphite affect the performance of a crucible?
- The porosity of graphite affects the performance of a crucible by influencing its thermal conductivity, chemical reactivity, and mechanical strength. Higher porosity allows for better heat transfer and distribution, making the crucible more efficient in conducting heat. However, excessive porosity can also increase the risk of chemical reactions between the crucible and its contents, leading to contamination or erosion. Additionally, porosity affects the mechanical strength and durability of the crucible, with lower porosity generally providing better resistance to cracking or breakage. Therefore, finding the right balance of porosity is crucial in determining the overall performance of a graphite crucible.
- Q:How do you prevent graphite crucibles from thermal shock during use?
- To prevent graphite crucibles from thermal shock during use, there are several measures that can be taken: 1. Preheating: Before using the crucible, it is important to preheat it gradually. This can be done by placing the crucible in a kiln or furnace and slowly increasing the temperature. This process allows the crucible to expand uniformly and minimizes the risk of thermal shock. 2. Avoid sudden temperature changes: Graphite crucibles should be heated and cooled slowly to avoid abrupt temperature changes. Rapid heating or cooling can cause thermal stress, leading to cracks or even breakage. It is advisable to use a programmable kiln or furnace that allows for controlled temperature ramping and cooling rates. 3. Use insulating materials: Insulating materials, such as ceramic fiber blankets or boards, can be used to surround the crucible during heating and cooling processes. These materials provide thermal insulation, reducing the rate of temperature change and minimizing the risk of thermal shock. 4. Proper handling: It is important to handle graphite crucibles with care to prevent accidental impacts or drops, which can cause cracks or fractures. Always use appropriate tools or tongs when moving or manipulating the crucible to avoid physical damage. 5. Avoid contact with water or other coolants: Graphite crucibles should not come into direct contact with water or other coolants while they are at high temperatures. This can cause rapid cooling and thermal shock. If cooling is necessary, it is recommended to allow the crucible to cool naturally in the ambient environment or use a controlled cooling process. By following these preventive measures, the risk of thermal shock in graphite crucibles can be significantly reduced, ensuring their longevity and performance in high-temperature applications.
- Q:Can a graphite crucible be used for sapphire crystal growth?
- Indeed, a graphite crucible is capable of being utilized for the purpose of sapphire crystal growth. It is a widely employed instrument in applications that involve high temperatures, particularly in processes pertaining to crystal growth. The growth of sapphire crystals necessitates temperatures exceeding 2000°C, and graphite crucibles possess the ability to endure such extreme temperatures without undergoing any reaction or contaminating the crystal. Moreover, graphite crucibles exhibit exceptional thermal conductivity, thereby assisting in the maintenance of a consistently uniform temperature throughout the crystal growth process. Consequently, graphite crucibles emerge as a fitting option for the growth of sapphire crystals.
- Q:What graphite crucible is used to smelt aluminium by electromagnetic induction heating?
- You buy that is very cheap graphite crucible, graphite crucible is magnetic good, Wuxi branch cast professional supply excellent magnetic crucible, graphite crucible, we can according to the customer, provide excellent technology of graphite crucible,
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SiC Graphite Crucibles For Gold Melting Aluminium And Copper, Brass
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 pc
- Supply Capability:
- 1000 pc/month
OKorder Service Pledge
OKorder Financial Service
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