Buy Graphite Crucible - Refractory SIC Crucible for Brass/Aluminum 2024
- Ref Price:
-
- 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 Refractory Crucibles Sic Crucible For Melting Copper/Brass/Aluminum
| 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 |
Refractory Crucibles Sic Crucible For Melting Copper/Brass/Aluminum
Physicochemical Properties
Type of Crucible | Type S | Type D |
Carbon Content/% | ≥38 | ≥45 |
Bulk Density/(g/cm3) | ≥1.70 | ≥1.85 |
Apparent Porosity/% | ≤29 | ≤21 |
Compression Strength/MPa | ≥20 | ≥25 |
Refractoriness/°C | ≥1400 | ≥1400 |
Type S: Clay graphite crucible
Type D: Isostatic pressing graphite crucible
Cited from CNS China National Standard of Graphite Crucible, which is solely drifted by TIANFU company.
Content Composition
C% | Sic% | AL2O3% | SIO2% |
45%-50% | 20%-30% | 10%-12% | 15-25% |
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.
We can supply the products according to customer's drawings, samples and performance requirement.
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- Q: Can graphite crucibles be used for powder compaction?
- No, graphite crucibles are not suitable for powder compaction as they are primarily used for high-temperature applications such as melting or casting metals, not for compressing powders.
- Q: How do you prevent graphite crucibles from cracking due to thermal stress?
- To prevent graphite crucibles from cracking due to thermal stress, there are several measures that can be implemented: 1. Preheating: Before using a new graphite crucible, it is important to preheat it gradually. This helps to eliminate any moisture or volatile components that may be present in the crucible, reducing the risk of thermal shock. 2. Avoid sudden temperature changes: Rapid and extreme temperature changes can cause thermal stress, leading to cracking. To prevent this, it is essential to heat and cool the crucible gradually. A gradual heating and cooling process allows the crucible to expand and contract uniformly, reducing the risk of cracking. 3. Use proper heating techniques: When heating the crucible, it is important to use appropriate heating techniques such as applying a uniform heat source. Uneven heating can lead to localized expansion and contraction, increasing the chances of cracking. 4. Maintain proper temperature limits: Each type of graphite crucible has a specific temperature limit. Exceeding this limit can result in thermal stress and eventual cracking. It is crucial to operate within the recommended temperature range to prevent damage. 5. Handle with care: Graphite crucibles are delicate and can be easily damaged if mishandled. To prevent cracking, it is important to handle them with care, avoiding any sudden impacts or rough handling. 6. Regular inspection: Regularly inspecting the crucibles for any signs of wear, cracks, or damage is vital. If any issues are identified, it is best to replace the crucible immediately to prevent any further damage or potential accidents. By following these preventive measures, the risk of thermal stress and cracking in graphite crucibles can be significantly reduced, ensuring their long-lasting performance.
- Q: Help: how can the graphite crucible be heated to 1000 degrees?
- 1000 degrees, the use of electricity, coal, gas can be enough to achieve.
- Q: What is the main function of graphite?
- For casting, casting, molding and high-temperature metallurgical material: Graphite due to thermal expansion coefficient is small, and the capability of cold and hot change, can be used as a mold of the glass, the use of graphite after black metal castings get precise size, smooth surface, high rate of finished products, can be used without processing or minor processing, thus saving a lot of metal. A powder metallurgy process, such as hard alloy, usually made of graphite material and used as a porcelain boat for press and sintering. The crystal growth of monocrystalline silicon, crucible, zone refining vessel, bracket, jig and induction heater are all made of high purity graphite. In addition, graphite can be used as vacuum heating graphite insulation plate and base, high temperature resistance furnace tube, rod, plate, lattice and other components.
- Q: Does a graphite crucible react with any substances during use?
- No, a graphite crucible does not react with any substances during use.
- Q: What are the common defects found in graphite crucibles?
- Some common defects found in graphite crucibles include cracks, erosion, contamination, and thermal shock. Cracks can occur due to thermal cycling or excessive stress, compromising the structural integrity of the crucible. These cracks can lead to leakage or failure during use, rendering the crucible unusable. Erosion is another common defect, especially when the crucible is used with aggressive or corrosive materials. Over time, the graphite can wear away, reducing the crucible's capacity or causing it to break down prematurely. Contamination is a significant issue in graphite crucibles, as impurities can contaminate the materials being processed. This can result in poor product quality or unwanted reactions. Contamination can occur due to poor crucible manufacturing practices, improper cleaning, or the use of low-quality graphite. Thermal shock is a defect caused by rapid temperature changes, which can lead to the crucible cracking or breaking. This defect can occur if the crucible is subjected to extreme temperature variations without proper preheating or cooling precautions. To mitigate these defects, it is essential to choose high-quality graphite crucibles that are resistant to thermal shock and erosion. Proper handling, preheating, and cooling procedures should be followed to prevent thermal shock. Additionally, regular inspection and maintenance can help identify any cracks or erosion early on, allowing for timely repair or replacement.
- Q: Are there any safety precautions to take when using a graphite crucible?
- There are various safety measures that need to be taken into account when utilizing a graphite crucible. To start with, it is crucial to handle the crucible with caution and avoid any instances of dropping or striking it against hard surfaces. Graphite crucibles are relatively delicate and can easily crack or break if handled improperly, which could result in harm or equipment damage. Moreover, it is imperative that graphite crucibles are stored in a dry and clean area in order to prevent contamination or chemical reactions. Moisture or impurities can cause the crucible to deteriorate or react with the heated materials, compromising its reliability and potentially causing accidents or failures. In addition, it is of utmost importance to utilize appropriate personal protective equipment (PPE) when working with a graphite crucible. This includes wearing heat-resistant gloves, goggles, and a lab coat or protective clothing to shield against heat and potential splashes or spills. When heating or cooling the crucible, it is advised to do so gradually in order to avoid thermal shock. Quick temperature changes can lead to the crucible cracking or breaking, posing possible danger or damage. Furthermore, it is essential to be mindful of the materials being utilized in the crucible. Certain substances may produce toxic fumes or hazardous reactions when heated in a graphite crucible, thus proper ventilation and knowledge of the materials' properties are crucial. Finally, after usage, it is vital to allow the crucible to completely cool down before handling or storing it. Attempting to handle a hot crucible can result in severe burns or injuries. By adhering to these safety precautions, the likelihood of accidents, injuries, or damage when utilizing a graphite crucible can be significantly diminished, ensuring a safe and efficient working environment.
- Q: What is the maximum temperature that a graphite crucible can withstand?
- The specific type and quality of graphite material used can cause variations in the maximum temperature that a graphite crucible can endure. Typically, graphite crucibles are engineered to withstand remarkably high temperatures, usually falling between 2000 and 3000 degrees Celsius (3632 to 5432 degrees Fahrenheit). However, it is crucial to bear in mind that extended exposure to temperatures at the upper extremity of this range may potentially result in harm or deterioration to the graphite crucible over time. Consequently, it is advisable to meticulously adhere to the manufacturer's guidelines and specifications in order to prevent exceeding the crucible's maximum temperature limit.
- Q: Can graphite crucibles be used for metal powder sintering?
- Indeed, metal powder sintering can be accomplished using graphite crucibles. The utilization of graphite as crucible material is widespread owing to its elevated melting point, chemical inertness, and thermal conductivity. The process of metal powder sintering entails subjecting the powder to intense heat in order to fuse the particles together, and graphite crucibles possess the capability to withstand such high temperatures without undergoing any reaction with the metal powders. Moreover, the commendable thermal conductivity of graphite crucibles facilitates the even distribution of heat, thereby ensuring the uniform sintering of the metal powder. Consequently, graphite crucibles are an appropriate choice for carrying out metal powder sintering procedures.
- Q: Are there any specific cleaning agents or methods recommended for graphite crucibles?
- There exist specific cleaning agents and techniques that are suggested for the purpose of cleaning graphite crucibles. Graphite crucibles are commonly employed in applications involving high temperatures, such as metal melting, and they can accumulate various impurities over time. A commonly suggested approach to clean graphite crucibles involves a combination of mechanical cleaning and chemical treatment. In mechanical cleaning, a soft brush or cloth is utilized to eliminate any solid debris or residue from the crucible. It is important to avoid using abrasive materials or engaging in harsh scrubbing, as this may result in damage to the crucible. Following mechanical cleaning, a chemical treatment is often required to remove any remaining impurities. Acidic solutions, for example hydrochloric acid or sulfuric acid, are frequently employed in the process of cleaning graphite crucibles. These solutions possess the capability to dissolve and eliminate organic and inorganic contaminants. However, it is crucial to be aware that handling and working with acid solutions can be hazardous and necessitates caution. It is recommended to wear personal protective equipment, such as gloves and goggles, and ensure adequate ventilation. Furthermore, it is of utmost importance to adhere to the manufacturer's instructions and guidelines for cleaning graphite crucibles. Certain crucibles may have specific requirements or limitations with regards to cleaning methods and agents, and it is vital to comply with these recommendations to prevent any damage to the crucible. In conclusion, while there are specific cleaning agents and techniques that are recommended for graphite crucibles, it is vital to exercise caution, follow safety guidelines, and consult the manufacturer's instructions to ensure proper cleaning and maintenance of the crucible.
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Buy Graphite Crucible - Refractory SIC Crucible for Brass/Aluminum 2024
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 pc
- Supply Capability:
- 1000 pc/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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