Large Graphite Crucible for Melting Aluminium, Copper, and Brass
- 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 SiC Graphite Crucibles
| 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 |
SiC Graphite Crucibles For Melting Aluminium And Copper, Brass
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
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 melting refractory metals?
- Absolutely! When it comes to melting refractory metals, graphite crucibles are the way to go. The reason being is that graphite possesses exceptional thermal conductivity and a remarkably high melting point, which renders it ideal for applications involving high temperatures. Take refractory metals like tungsten, molybdenum, and niobium for instance; these metals boast extraordinary melting points and can effortlessly withstand the temperatures achieved within a graphite crucible. Moreover, graphite exhibits minimal reactivity with most metals, thereby making it a suitable material for securely housing and melting refractory metals without any risk of contamination. However, it is of utmost importance to select a top-notch graphite crucible that is specifically engineered for melting refractory metals in order to ensure optimal performance and durability.
- Q: How is a graphite crucible used in the production of carbon composites?
- A graphite crucible is a crucial tool used in the production of carbon composites. Carbon composites are materials that consist of carbon fibers embedded in a matrix material, typically a resin or a metal. In the production process, the graphite crucible acts as a container or a mold for the molten matrix material. The crucible is specifically made from graphite due to its high melting point and excellent thermal conductivity. It can withstand the extreme temperatures required for melting the matrix material, which can range from several hundred to several thousand degrees Celsius, depending on the type of composite being produced. First, the carbon fibers are prepared by aligning them in a specific orientation to achieve the desired mechanical properties of the final composite. These carbon fibers are then placed inside the graphite crucible, forming a pre-defined shape or structure. Next, the matrix material, such as a resin or metal, is heated to its melting point and poured into the graphite crucible. The crucible, being an excellent conductor of heat, helps to distribute the heat evenly throughout the molten matrix material, ensuring uniformity and preventing any hotspots or uneven curing. As the molten matrix material cools down, it solidifies around the carbon fibers, encapsulating them completely. This process is known as impregnation or infiltration, where the matrix material fills the gaps between the carbon fibers, binding them together and forming a solid composite structure. The graphite crucible is essential in maintaining the shape and structure of the composite during this process. After the impregnation process, the composite is allowed to cool and cure, resulting in a rigid and durable material with excellent mechanical properties. The crucible is then removed, leaving behind the carbon composite in the desired shape. In summary, a graphite crucible is used in the production of carbon composites as a container for the molten matrix material. It provides a stable and controlled environment for the impregnation process, ensuring uniformity and consistency in the final composite product.
- Q: Are there any alternative materials to graphite for crucibles?
- Yes, there are alternative materials to graphite for crucibles. Some common alternatives include silicon carbide, alumina, zirconia, and boron nitride. These materials are often preferred for their specific properties and applications. For example, silicon carbide exhibits excellent thermal conductivity and high mechanical strength, making it suitable for high-temperature applications. Alumina, on the other hand, is known for its chemical inertness and resistance to corrosion, making it ideal for handling reactive materials. Zirconia offers good thermal shock resistance and is often used in applications requiring rapid temperature changes. Lastly, boron nitride is preferred for its excellent thermal stability and lubricity. Each of these alternative materials has its own advantages and specific uses, making them viable options for crucibles depending on the specific requirements of the application.
- Q: Are graphite crucibles suitable for vacuum induction melting?
- Graphite crucibles are indeed suitable for vacuum induction melting. Graphite is a highly stable and inert material, which makes it ideal for use in high temperature and vacuum environments. It can withstand the extreme heat and pressure conditions required for vacuum induction melting. Graphite crucibles have excellent thermal conductivity and can efficiently transfer heat to the metal being melted. This helps to achieve uniform heating and melting of the metal, ensuring consistent results. Additionally, graphite crucibles have good resistance to thermal shock, meaning they can handle rapid temperature changes without cracking or breaking. Furthermore, graphite crucibles offer good chemical resistance, which is important when melting reactive metals or alloys. They can withstand the corrosive effects of molten metals, preventing contamination and maintaining the purity of the melted material. In summary, graphite crucibles are highly suitable for vacuum induction melting due to their stability, high temperature resistance, thermal conductivity, resistance to thermal shock, and chemical resistance. They provide a reliable and efficient means of melting metals under vacuum conditions, making them a preferred choice in various industrial applications.
- Q: What are the different methods of preventing contamination from graphite particles?
- There exist various techniques that can be employed to avoid the presence of graphite particles causing contamination. 1. Implementation of containment systems: One viable approach is to utilize containment systems, such as enclosed environments or glove boxes, to prevent the escape of graphite particles into the surrounding area. These containment systems can be equipped with air filtration and ventilation systems to eliminate any graphite particles present in the air. 2. Appropriate handling and storage: Another effective method to prevent contamination involves ensuring that graphite particles are handled and stored correctly. This may entail the use of sealed containers or bags for graphite storage and the adoption of proper handling techniques to minimize the dispersion of particles into the environment. 3. Regular cleaning and maintenance: Performing routine cleaning and maintenance on equipment and surfaces that come into contact with graphite can effectively prevent contamination. Specialized cleaning methods, such as wet cleaning or vacuuming, can be employed to eliminate any graphite particles that may be present. 4. Utilization of personal protective equipment: The utilization of personal protective equipment, including gloves, masks, and coveralls, can significantly mitigate the risk of contamination from graphite particles. These protective measures reduce direct contact with graphite, thereby minimizing the likelihood of contamination. 5. Provision of adequate training and education: Providing comprehensive training and education to personnel handling graphite is vital in raising awareness about contamination risks and the necessary precautions to be taken. This training can encompass proper handling techniques, the use of personal protective equipment, and the importance of regular cleaning and maintenance. By implementing these techniques, contamination from graphite particles can be effectively prevented, thereby ensuring a secure and sanitary working environment.
- Q: Is it possible to achieve controlled pouring with a graphite crucible?
- Controlled pouring using a graphite crucible is indeed achievable. Various industries, such as metal casting and melting, widely utilize graphite crucibles due to their unique properties. These crucibles possess a high melting point, excellent thermal conductivity, and good resistance to thermal shock, making them suitable for handling high-temperature substances. To achieve controlled pouring with a graphite crucible, several factors must be taken into account. Firstly, it is essential to adequately preheat the crucible to the desired pouring temperature. This ensures that the molten material maintains its desired temperature throughout the pouring process, preventing premature solidification. Secondly, the design of the crucible and its pouring lip should enable precise control over the flow of the molten substance. Shaping the pouring lip allows for a steady and controlled stream, reducing the risk of splashing or spilling. Moreover, the operator's expertise and experience play a vital role in achieving controlled pouring. They must possess a comprehensive understanding of the poured material, its characteristics, and the appropriate pouring techniques. Additionally, they should be mindful of potential hazards and take necessary precautions to ensure safety throughout the pouring procedure. In conclusion, achieving controlled pouring with a graphite crucible is feasible by considering proper preheating, suitable crucible design, and skilled operators. These factors contribute to achieving precise and controlled pouring for a variety of applications.
- Q: Graphite can react with alkali in high temperature
- Graphite is a very stable carbon element. Generally in time, high temperatures generally do not react with bases.
- Q: Can quartz ceramic crucibles instead of graphite crucibles?
- Graphite conducts electricity. Sometimes it takes graphite to heat it, though it is rare, so it can not be replaced
- Q: Can graphite crucibles be used for plasma arc melting?
- Graphite crucibles prove useful in plasma arc melting as they possess high thermal conductivity and resistance to high temperatures. This makes them suitable for a range of high-temperature applications. Given that plasma arc melting involves the use of an electric arc to create and sustain a plasma state, it necessitates a crucible capable of enduring the intense heat generated throughout the process. Graphite crucibles excel in this regard, as they can withstand these extreme temperatures and serve as a stable and durable container for the resulting molten material. Moreover, graphite crucibles exhibit commendable chemical resistance, enabling them to handle corrosive substances that may arise during plasma arc melting. In summary, graphite crucibles remain a prevalent and effective choice for plasma arc melting applications.
- Q: What material of graphite is used in arc furnace production?
- Today, large diameter semi graphitic carbon electrodes have been adopted in industrial silicon electric furnaces. Can effectively save production costs, and the technology is relatively mature.
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Large Graphite Crucible for Melting Aluminium, Copper, and Brass
- 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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