Ceramic Vs Graphite Crucible - Refractory Crucibles SiC Crucible for Melting Copper/Brass/Aluminum
- Ref Price:
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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 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
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.
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% |
- Q: Can graphite crucibles be used for metal powder atomization?
- Metal powder atomization can utilize graphite crucibles. These crucibles are widely employed in metallurgical procedures because of their impressive thermal conductivity, chemical inertness, and resistance to extreme temperatures. During metal powder atomization, the crucible is subjected to high temperatures, causing the metal feedstock to melt and subsequently be atomized into fine powder particles through the use of a gas or water jet. The graphite crucible is instrumental in maintaining a stable temperature throughout the atomization process, as well as facilitating efficient heat transfer, leading to the production of consistent and high-quality metal powder. Moreover, graphite crucibles possess the ability to withstand the corrosive properties of molten metals, thereby making them suitable for a wide range of metal powder atomization applications.
- Q: What are the different methods of controlling temperature in a graphite crucible?
- There are several methods of controlling temperature in a graphite crucible, including the use of external heating sources such as gas burners or electric heaters, the addition of insulating materials to regulate heat transfer, and the implementation of temperature sensors and controllers to maintain a specific temperature range. Additionally, techniques like preheating the crucible or adjusting the gas flow rate can also impact and control the temperature inside the crucible.
- Q: Can graphite crucibles be used for alloy preparation?
- Yes, graphite crucibles can be used for alloy preparation. Graphite is a suitable material for crucibles due to its high melting point, excellent thermal conductivity, and chemical inertness. It can withstand high temperatures and is commonly used in metallurgical processes for smelting and alloying different metals.
- Q: Can graphite crucibles be used for carbon fiber production?
- Carbon fiber production can utilize graphite crucibles, which are often employed in high-temperature situations due to their exceptional thermal conductivity, high melting point, and chemical resistance. To create carbon fiber, graphite crucibles can be utilized to heat and liquefy the precursor materials like polyacrylonitrile (PAN) or pitch. These materials then undergo a series of steps to generate carbon fiber. Graphite, known for its high-temperature stability and lack of reactivity, serves as an ideal substance for maintaining the necessary conditions during the carbonization process. Furthermore, the smooth surface of graphite crucibles plays a significant role in achieving uniform heat distribution, an essential factor in ensuring the quality and consistency of carbon fiber production. As a result, graphite crucibles prove to be a suitable choice for the production of carbon fiber.
- Q: Can graphite crucibles be used for melting reactive metals?
- Indeed, graphite crucibles are capable of melting reactive metals. Graphite exhibits exceptional resistance to heat and possesses superb thermal conductivity, rendering it an optimal substance for high-temperature purposes such as the melting of reactive metals. Moreover, graphite is chemically inert and does not undergo reactions with majority of metals, including numerous reactive variants. Nevertheless, it is crucial to acknowledge that specific reactive metals, for instance alkali metals or certain rare earth metals, may react with graphite when exposed to elevated temperatures. In such scenarios, alternative crucible materials such as refractory metals or ceramics might be deemed more appropriate.
- Q: How do you determine the appropriate crucible capacity for a specific application?
- To determine the appropriate crucible capacity for a specific application, several factors need to be considered. These include the amount of material to be melted or processed, the desired temperature range, the duration of the process, and any necessary safety precautions. By evaluating these factors, one can calculate the required crucible capacity that will meet the application's needs efficiently and effectively.
- Q: Can a graphite crucible be used for ceramic or porcelain production?
- No, a graphite crucible cannot be used for ceramic or porcelain production. Graphite is a form of carbon that has a high melting point and is often used for melting metals and alloys due to its excellent heat resistance. However, when it comes to ceramic or porcelain production, higher temperatures are required, usually exceeding the melting point of graphite. Additionally, graphite crucibles are porous and can absorb moisture, which can cause issues during the firing process of ceramics or porcelain. For these reasons, specialized crucibles made of materials like alumina or zirconia are typically used in ceramic or porcelain production to ensure proper firing and prevent contamination.
- Q: Are carbon and graphite widely used? What fields are they applied to?
- Carbon graphite electrodes are used in arc furnace steelmaking, industrial yellow phosphorus and silicon production.
- Q: What are the different methods of preventing graphite crucible leakage?
- To prevent graphite crucible leakage, there are various approaches that can be utilized. To begin with, ensuring the crucible is properly prepared and installed is essential. This involves thoroughly cleaning the surfaces of the crucible and the lid or cover that it mates with. By eliminating any dirt or debris, a tighter seal can be achieved. Additionally, applying a thin layer of graphite lubricant or a high-temperature sealant to the mating surfaces can aid in creating a more secure seal, thus preventing leakage. Another effective method is the utilization of gaskets or O-rings between the crucible and the lid. These gaskets, typically composed of materials like graphite, ceramic fiber, or metal, are designed to provide a reliable seal. Placing the gasket between the crucible and the lid establishes a barrier, effectively preventing any molten metal or other substances from escaping. Proper tightening of the crucible lid or cover is also crucial in preventing leakage. Excessive tightening can lead to damage and subsequent leaks, while insufficient tightening can result in a loose seal. Adhering to the manufacturer's recommended torque specifications for the lid or cover is imperative to ensure a proper seal. In addition, regular inspection and maintenance of the crucible play a vital role in preventing leakage. Promptly addressing any signs of cracks, chips, or deterioration is essential, as these issues can compromise the crucible's integrity. By either replacing damaged crucibles or carrying out timely repairs, the risk of leakage can be minimized. Furthermore, proper handling and usage of the crucible contribute significantly to leakage prevention. Avoiding sudden temperature changes, thermal shocks, and excessive mechanical stresses can help prolong the crucible's lifespan and maintain its integrity. It is essential to follow the manufacturer's recommended operating procedures and guidelines to ensure the crucible remains intact and leakage-free. In conclusion, by implementing these methods - proper preparation and installation, utilization of gaskets or O-rings, correct lid tightening, regular inspection and maintenance, and appropriate handling - leakage in graphite crucibles can be effectively prevented, guaranteeing a safe and efficient operation.
- Q: How long does the graphite crucible extend its service life?
- Graphite crucible is still the correct way to use, how to cool down, how to preserve, are very important.
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Ceramic Vs Graphite Crucible - Refractory Crucibles SiC Crucible for Melting Copper/Brass/Aluminum
- 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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