High Purity Graphite Crucible for Melting Metals
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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
| Application: | melting metals | Height: | depends on your requirement | Top Diameter: | 10-1200mm |
| Bottom Diameter: | 10-1200mm | Place of Origin: | China (Mainland) | Brand Name: | |
| product name: | SiC graphite crucible china graphite crucible | top diameter: | 10-1200mm | bottom diameter: | 10-1200mm |
| height: | depends on your requirement | application: | melting gold,silver and other metals | Specific resistance: | ≤14μΩ.m |
| Bending strength: | ≥25MPa | Compressive strength: | ≥50MPa | Bulk densit: | ≥1.68g/cm3 |
| Ash content: | ≤0.15% |
Packaging & Delivery
| Packaging Details: | woden case for SiC graphite crucible china graphite crucible |
| Delivery Detail: | within 20 days |
Introduction
1. Graphite crucible can be used for non-ferrous metal smelting and casting, dissolving gold
or silver ornaments, analysis of special type steel, sintering hard metal.
2. graphite crucible for smelting gold is specialized in melting gold in headgear and jewelryindustry. That requests graphite material has high density and purity, ablation-resistance, and it can be used many times. We can machine various crucibles accordingto customer's requirement.
3. Machined from high pure graphite and widely used in the gold,silver,platinum and other noble metal's melting.If it's used in oxygen atmosphere,it wil start to be oxygenized when the temperature is higher than 700-800°c. If it's used in the protective atmosphere, it can stand more than 2000°c.
4. widely used in such fields as industrial furnaces, mono-crystalline silicon machinery, mono-crystalline silicon machinery, electron, semi-conductor, metallurgy, oil, chemistry, textile, electrical machinery, electrical equipment, electrical furnace, traffic, communication industry, medicine, etc.
Advantages
1.good thermal conductivity
2.High-temperature resistance
3. Small thermal expansion coefficient.
4.Strong corrosion resistance to acid and alkali liquid
5.Good chemical stability
Technology parameter
Item | Unit | High pure graphite | ||
baked twice | baked three time | baked four times | ||
impregnated once | impregnated twice | impregnated three times | ||
Grain size | mm | ≤325mesh | ≤325mesh | ≤325mesh |
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 |
We accept small orders,please inquiry us freely. | ||||
Item | Unit | Fine-grain Specialty Graphite model 1 | Fine-grain Specialty Graphite model model2 | ||
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 |
We are always avliable to service you! | |||||
Parts sizes of graphite crucible table
Product name | Dimensions(mm) | Weight(g) | |||
Φ1 | Φ2 | Φ3 | H | ||
1 kg graphite crucible | 58 | 47 | 35 | 88 | 160 |
2kg graphite crucible
| 65 | 58 | 44 | 110 | 240 |
2.5kg graphite crucible
| 65 | 58 | 44 | 126 | 300 |
3kg graphite crucible
| 85 | 75 | 60 | 105 | 390 |
4kg graphite crucible
| 85 | 75 | 60 | 130 | 500 |
4kg graphite crucible
| 85 | 75 | 60 | 136 | 500 |
5kg graphite crucible
| 100 | 89 | 69 | 130 | 700 |
5.5kg graphite crucible
| 105 | 90 | 70 | 156 | 800 |
6kg graphite crucible
| 110 | 97 | 79 | 174 | 970 |
We have all kinds of sizes graphite crucibles in stock,please feel free to contact us. | |||||
packaging & shipping
Packaging
1. For each type, we can send you the detailed high-resolution pictures since we have the sample in our hand.
2. For packaging, we have the professional packaging starff, pls. don't worry about the shipping.
Our service
1.Delivery time is 5~7 days for sample and 15 working days for bulk order;
2. Strong production capacity and strict quality control system;
3. Your inquiry and problems related to our products or prices will be replied in 24 hours;
4. Well-trained and experienced staffs to answer all your inquires;
5. After-sale tracking service for all of our clients;
6. OEM is available; small quantities, mixed bulk orders are also welcome;
7. Payment: L/C, D/A, D/P, T/T, Paypal , Western Union, MoneyGram;
8. Delivery way: UPS, DHL, TNT, FEDEX, EMS, CHINA POST.
After-Sales Service
1.1year warranty for most of our products;
2.We will arrange delivery of the goods on time:
3.Within the warranty period, we will bear all the qulity problem of our produts;
4.Beyond the warranty period, we will despatch the replacement parts to help fix the products;
5.Without any problem, we will gain the feedbacks of our products to help improve better products.
FAQ
Q:How to get in touch with us?
A:You can clik "Contact Supplier" above, or click "Chat Now!". We provide 24-hour service!
Q: How can I get free samples?
A: Only carbon brush for power tools/automobiles/motorcycle----no more than 4 sets for each model is free of charge.
Q:How to order?
A:Quotation→Price comfirming→Sign a contract→Mass production→Delivery
Q:How to pay?
A:30% T/T deposit.→70% balance by T/T against B/L copy.
Q:How to get after-sales service?
A:You can contact with your appointed sales.
You can also get in touch with our Quality Assurance Department: zdatzddt.com
Company Information
- Q: How do you prevent graphite crucibles from sticking to the melted material?
- One way to prevent graphite crucibles from sticking to the melted material is by applying a suitable release agent or coating to the surface of the crucible. This can create a barrier between the crucible and the melted material, preventing them from adhering to each other. Additionally, maintaining proper temperature control and ensuring the crucible is properly preheated before adding the melted material can also help minimize sticking.
- Q: How does the wall thickness of a graphite crucible affect the melting process?
- The wall thickness of a graphite crucible plays a significant role in the melting process. The thickness of the walls determines the heat transfer rate and the overall efficiency of the crucible. A thicker wall will have a higher thermal mass, meaning it can absorb and retain more heat. This can be advantageous in certain applications where a gradual and controlled heating or cooling process is desired. The increased thermal mass helps to stabilize the temperature and prevent rapid fluctuations, which can be detrimental to the melting process. On the other hand, a thinner wall will have a lower thermal mass and can facilitate faster heat transfer. This can be beneficial when quick and efficient melting is required. The thinner walls allow for faster heat transfer to the material being melted, resulting in shorter melting times and increased productivity. However, it is important to note that a thinner wall may also be more susceptible to thermal stress and cracking due to the higher temperature differentials between the inside and outside of the crucible. This can lead to potential contamination of the melted material or even failure of the crucible itself. Additionally, the wall thickness affects the overall durability and lifespan of the crucible. Thicker walls are generally more resistant to wear and tear, providing a longer operational life. This is particularly important in high-temperature applications where the crucible is subjected to extreme conditions. In summary, the wall thickness of a graphite crucible has a direct impact on the melting process. Thicker walls provide better temperature stability but may lead to longer melting times, while thinner walls allow for faster heat transfer but may be more prone to thermal stress. The choice of wall thickness depends on the specific requirements of the melting process and should be carefully considered to achieve optimal results.
- Q: How does a graphite crucible handle abrasion resistance?
- A graphite crucible has excellent abrasion resistance due to the unique properties of graphite.
- Q: What are the different methods of protecting the surface of a graphite crucible?
- There are several methods of protecting the surface of a graphite crucible to ensure its longevity and prevent any contamination or damage. Here are some of the different methods commonly used: 1. Coating: Applying a protective coating to the surface of the graphite crucible is one of the most popular methods. Different types of coatings can be used, such as boron nitride, silicon carbide, or refractory metals like tungsten or molybdenum. These coatings act as a barrier, preventing the crucible from reacting with the materials being melted or causing contamination. 2. Glazing: Glazing involves applying a layer of glass or ceramic material to the surface of the crucible. This creates a protective barrier that helps reduce chemical reactions and corrosion. Glazing is commonly used for applications involving aggressive chemicals or high-temperature environments. 3. Oxidation: Oxidizing the surface of the graphite crucible can provide protection against certain reactive materials. This process involves exposing the crucible to high temperatures in an oxygen-rich environment, forming a thin layer of oxidized graphite on the surface. This layer acts as a barrier to prevent further oxidation or chemical reactions. 4. Preheating: Preheating the graphite crucible before use can help to eliminate any moisture or impurities present on the surface. It also helps to stabilize the crucible, reducing the risk of thermal shock and cracking. 5. Proper handling and storage: Another important method of protecting the graphite crucible is through proper handling and storage. Avoiding rough handling, excessive impacts, or dropping the crucible can prevent physical damage. Proper storage in a clean and dry environment is also crucial to prevent contamination or deterioration. Overall, utilizing a combination of these methods can greatly enhance the lifespan and performance of a graphite crucible, ensuring it remains in optimal condition for various applications in industries such as metallurgy, foundries, and laboratories.
- Q: Can a graphite crucible be used for heat exchanger applications?
- No, a graphite crucible is not suitable for heat exchanger applications. Graphite crucibles are primarily used for melting and holding metals at high temperatures in industries such as foundries and metal casting. Heat exchangers, on the other hand, are devices designed to transfer heat between two fluids or substances and require specific materials and designs to optimize heat transfer efficiency.
- Q: I'd like to smelt 104 aluminium alloy by medium frequency furnace. What should I pay attention to? Please point it out, thank you!
- Don't know what is your crucible material medium frequency furnace, if using graphite crucible, graphite as easily broken and easy to absorb moisture, must be handled with care to avoid the collision, but must be in use before the slow heating and drying, until the crucible to dark red, check no cracks can be put into the molten alloy. If the iron crucible, the Aluminum Alloy are strictly limited, so the iron, iron crucible, Tieshao, ladle, the tool must be coated with paint, paint is selling goods, components do not know, iron crucible and apparatus must also be preheated, exclusion of moisture. In addition, do not know you are refining aluminum ingot or making ah Aluminum Alloy parts, if the production parts should pay attention to defects of oxidation, slag and coarse grain, I am afraid that refining, refining agent are also ready to sell goods, how can read the instructions. Especially when smelting Caution!, preventing aluminum liquid splash, including many contents, such as inspection and testing, there is not much to say, the main note in the smelting process I thought so much, typing is slow, very hard ah, hey. Hope to be of some help to you.
- Q: What are the considerations for selecting a crucible tongs for handling graphite crucibles?
- When selecting crucible tongs for handling graphite crucibles, several considerations should be taken into account. Firstly, it is important to choose tongs that are specifically designed for graphite crucibles. Graphite is a brittle material and can be easily damaged if mishandled. Therefore, it is crucial to select tongs that have a smooth and non-abrasive surface to prevent any scratching or chipping of the crucible. The size and weight of the crucible should also be considered when choosing tongs. It is essential to select tongs that can securely grip and support the crucible without any risk of dropping or damaging it. Tongs with adjustable jaws or a spring-loaded mechanism can offer more flexibility in accommodating different sizes of crucibles. Another important consideration is the material of the tongs. Ideally, tongs made from materials such as stainless steel or high-temperature alloys should be chosen. These materials offer excellent heat resistance and durability, ensuring that the tongs can withstand the high temperatures typically encountered during the handling of graphite crucibles. Furthermore, the design and construction of the tongs should be evaluated. Look for tongs that have a sturdy and ergonomic design, with comfortable handles that provide a firm grip. This will enhance the safety and ease of use when handling the crucibles. Lastly, it is advisable to consider the reputation and reliability of the manufacturer or supplier when selecting crucible tongs. Look for trusted brands or suppliers that have a good track record in providing high-quality and reliable laboratory equipment. In summary, the considerations for selecting crucible tongs for handling graphite crucibles include choosing tongs specifically designed for graphite, considering the size and weight of the crucible, selecting tongs made from heat-resistant materials, evaluating the design and construction of the tongs, and considering the reputation of the manufacturer or supplier.
- Q: How does the thermal stability of graphite affect the performance of a crucible?
- The thermal stability of graphite greatly affects the performance of a crucible. Graphite is known for its high melting point and excellent resistance to thermal shock, making it a suitable material for crucibles. Its ability to withstand high temperatures without deforming or cracking ensures that the crucible maintains its shape and integrity during the intense heat of various industrial processes such as melting metals or glass. Additionally, graphite's thermal stability helps in evenly distributing heat within the crucible, allowing for efficient and consistent heat transfer. Overall, the thermal stability of graphite plays a crucial role in ensuring the durability and performance of a crucible in extreme temperature conditions.
- Q: How do you prevent graphite crucibles from contaminating the melted material with carbon?
- To avoid carbon contamination from graphite crucibles in the melted material, there are several steps that can be taken: 1. Crucible preparation: Before using the crucible, it is crucial to prepare it properly. This involves heating the crucible to a high temperature, typically around 1000 degrees Celsius, in an environment rich in oxygen. This process, called annealing, helps eliminate impurities and surface contaminants from the graphite crucible. 2. Coating the crucible: Applying a protective coating to the interior surface of the crucible can help prevent carbon contamination. One commonly used coating is boron nitride, which acts as a non-reactive barrier between the graphite crucible and the melted material. 3. Usage of a cover: When melting materials in a graphite crucible, it is advisable to use a cover or lid to minimize air contact. This helps prevent the crucible from reacting with the carbon in the atmosphere, reducing the risk of contamination. 4. Control of the melting environment: Maintaining a controlled melting environment can also help prevent carbon contamination. This includes ensuring proper sealing of the crucible, using an appropriate heating method, and controlling the atmosphere inside the furnace or melting apparatus. 5. Regular maintenance and cleaning: Regular inspection and cleaning of the crucible are essential to prevent carbon contamination. Any cracks, chips, or signs of wear should be addressed immediately, as they can lead to carbon contamination. Cleaning the crucible using suitable methods and materials, such as mild acids or solvents, can help remove any accumulated carbon or other contaminants. By following these preventive measures, it is possible to minimize the risk of carbon contamination from graphite crucibles in melted materials. However, it is important to note that complete elimination of carbon contamination may not always be possible, especially when working with highly reactive materials or under extreme conditions.
- Q: What magnetic material is sintered with large corundum crucible?
- Corundum temperature limited, easily cracked at high temperature.
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High Purity Graphite Crucible for Melting Metals
- 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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