High Temperature Melting Graphite Crucibles - SIC Grade
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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
Other refractory materials for High temperature industry
- Q: Are there any health risks associated with using a graphite crucible?
- Using a graphite crucible can pose certain health risks. Graphite crucibles are commonly utilized in high-temperature applications like metal casting, melting, and chemical reactions. However, when exposed to high temperatures or during handling, graphite itself can emit small particles or fine dust. Inhaling graphite particles can potentially lead to respiratory problems, particularly for individuals with pre-existing respiratory conditions like asthma or chronic bronchitis. Prolonged exposure to graphite dust can also result in the development of a lung disease known as graphite pneumoconiosis. Moreover, graphite crucibles have the ability to absorb and release trace amounts of impurities, such as heavy metals or other toxic substances, which can contaminate the materials being processed. This poses a risk to both the workers handling the crucibles and the final products. To minimize these health risks, it is crucial to handle graphite crucibles with caution and utilize appropriate personal protective equipment like gloves and masks. Maintaining a well-ventilated workspace and regularly cleaning the crucibles are also important to reduce the release of graphite particles. It is advisable to regularly monitor and evaluate the air quality in the working environment to ensure the safety of the workers.
- Q: Can a graphite crucible be used for melting carbon-based materials?
- Yes, a graphite crucible can be used for melting carbon-based materials. Graphite is an excellent conductor of heat and has a high melting point, making it suitable for high-temperature applications like melting carbon-based materials. Additionally, graphite crucibles have good chemical resistance to withstand the corrosive nature of carbon-based materials during the melting process.
- Q: Can graphite crucibles be used for melting radioactive materials?
- Graphite crucibles can indeed be used for melting radioactive materials. Graphite is known for its high melting point, excellent thermal conductivity, and chemical inertness, making it a suitable material for containing and melting various substances, including radioactive materials. Additionally, graphite has low neutron absorption properties, which is crucial when dealing with radioactive materials as it minimizes the risk of neutron-induced reactions. However, it is important to note that special precautions and safety measures should be taken when handling and melting radioactive materials to ensure the safety of personnel and prevent any potential contamination or release of harmful radiation.
- Q: Where is the difference between the silicon carbide crucible and the graphite crucible?
- Where is the difference between the silicon carbide crucible and the graphite crucible?Silicon carbide crucibles can be used instead of graphite crucibles.
- Q: What are the different methods of monitoring the melting process in a graphite crucible?
- There are various techniques available to monitor the melting process in a graphite crucible, which can offer valuable insights into the temperature, consistency, and progress of the process. 1. Visual Inspection: An uncomplicated method involves visually examining the melting process. This entails observing the color, consistency, and movement of the materials as they melt. For instance, if the materials transform into a liquid state and flow smoothly, it indicates that the melting process is proceeding as anticipated. 2. Thermocouples: Widely utilized for temperature measurement in industrial processes, thermocouples are employed for melting in graphite crucibles. These devices consist of two dissimilar metals joined together at one end. By measuring the voltage difference between the two ends, the temperature can be determined. Accurate temperature monitoring can be achieved by inserting thermocouples into or near the crucible. 3. Infrared Pyrometers: Non-contact temperature measurement devices known as infrared pyrometers utilize infrared radiation to determine an object's temperature. They can be utilized to monitor the temperature of the graphite crucible during the melting process without physical contact. Infrared pyrometers offer swift and precise temperature readings. 4. Optical Emission Spectroscopy (OES): OES is a technique that analyzes the light emitted by the melting materials to ascertain their composition and temperature. By analyzing the spectral lines and intensities of the emitted light, OES can provide valuable information about the melting process, including temperature and the presence of impurities or alloying elements. 5. Pressure Measurement: Monitoring the pressure within the graphite crucible can serve as an indicator of the melting process. As the materials melt and vaporize, the pressure inside the crucible may increase. Pressure sensors can be utilized to measure pressure changes during the melting process, offering insight into the progress of the melting and the behavior of the materials. These techniques can be employed individually or in combination to monitor the melting process in a graphite crucible. By utilizing one or more of these methods, operators can ensure that the melting process is proceeding as intended and make any necessary adjustments or interventions to maintain optimal conditions.
- Q: Are graphite crucibles suitable for melting alloys with low melting points?
- Yes, graphite crucibles are suitable for melting alloys with low melting points. Graphite has a high melting point, excellent thermal conductivity, and is chemically inert, making it an ideal material for use in high-temperature applications such as melting metals and alloys. Graphite crucibles can withstand the high temperatures required to melt alloys with low melting points without cracking or deforming. Additionally, graphite crucibles have good heat retention properties, allowing for efficient and uniform heating of the alloy. Therefore, graphite crucibles are commonly used in industries such as metallurgy and foundries for melting alloys with low melting points.
- Q: Can graphite crucibles be used for melting pharmaceutical compounds?
- Melting pharmaceutical compounds can be done using graphite crucibles. Graphite crucibles are well-known for their high melting point, making them suitable for high-temperature applications like melting metals, alloys, and certain chemicals. It is crucial to match the temperature range of the graphite crucible with the melting point of the specific compound being melted, as pharmaceutical compounds may have different melting points. Moreover, graphite crucibles have low reactivity and are chemically inert, minimizing the risk of contamination or chemical reactions during the melting process. Nevertheless, it is vital to consider the specific requirements and properties of the pharmaceutical compound to ensure compatibility with the graphite crucible.
- Q: Can graphite crucibles be used for laboratory analysis?
- Laboratory analysis can utilize graphite crucibles. Laboratories frequently employ graphite due to its resistance to high temperatures and lack of chemical reactivity. Its advantageous properties make it particularly useful for carrying out processes that involve extreme heat, such as metal melting, as it can endure temperatures of up to 3000 degrees Celsius. Moreover, graphite crucibles possess exceptional thermal conductivity, ensuring a uniform distribution of heat during experiments. However, it is crucial to acknowledge that graphite crucibles may react with specific chemicals or elements under particular conditions, necessitating careful consideration of compatibility with the substances being analyzed. Additionally, the selection of crucible material should be based on the unique requirements of the analysis, as certain situations may demand alternative materials like porcelain, quartz, or platinum.
- Q: What are the different methods of preventing thermal shock in a graphite crucible?
- There are several methods that can be employed to prevent thermal shock in a graphite crucible. 1. Preheating: One of the most effective ways to prevent thermal shock is to preheat the graphite crucible before introducing it to high temperatures. By gradually increasing the temperature, the crucible can expand more evenly, reducing the risk of cracks or fractures due to sudden temperature changes. 2. Gradual cooling: Similarly, after use, it is essential to cool down the graphite crucible gradually. Placing it in a controlled environment or using a cooling chamber can help prevent rapid temperature changes, which can lead to thermal shock. 3. Avoiding direct flame contact: Exposing the graphite crucible directly to an open flame can cause localized hotspots and temperature gradients, increasing the likelihood of thermal shock. To prevent this, it is advisable to use indirect heating methods, such as placing the crucible in a furnace or using a heating mantle. 4. Insulating materials: Using insulating materials, such as ceramic fiber blankets or coatings, can help to reduce the heat transfer rate to the graphite crucible. This insulation can help mitigate sudden temperature changes and minimize the risk of thermal shock. 5. Proper handling: Careful handling of the graphite crucible is crucial to prevent thermal shock. Avoiding dropping or banging the crucible against hard surfaces can prevent potential damage and cracks. Additionally, using appropriate lifting tools or tongs designed for graphite crucibles can minimize the risk of mishandling. 6. Controlled heating and cooling rates: When subjecting the graphite crucible to high temperatures, it is important to control the heating and cooling rates. Rapid or uneven temperature changes can cause thermal stress and result in thermal shock. Employing temperature controllers or ramping up/down the temperature gradually can help reduce the likelihood of thermal shock. By implementing these methods, the risk of thermal shock in a graphite crucible can be significantly reduced, ensuring its longevity and reliability in various high-temperature applications.
- Q: The difference between atomic absorption pyrolytic graphite tube and common graphite tube
- Atomizer with different flame atomizer consists of three parts: atomizer, premixing chamber and burner. Features: easy operation and good reproducibility. Graphite furnace atomic device is a type of system will be placed in the pipe wall, graphite platform, carbon sample holes or graphite crucible with electric heating to a high temperature to achieve atomization. Tubular graphite furnace is the most commonly used atomization device. The atomization program is divided into drying, ashing, atomization and high temperature purification. The atomization efficiency is high: under the adjustable high temperature, the sample utilization rate is 100%. High sensitivity: the detection limit is 10-6~10-14. Small amount of sample: suitable for determination of refractory elements.
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High Temperature Melting Graphite Crucibles - SIC Grade
- 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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