Silicon Carbide Graphite Crucible Amazon

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5 Pieces pc

Supply Capability:: 10000 Pieces per Month pc/month

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Detailed Product Description

1. Top quality crucibles offer consistent performance when melting ferrous, onferrous and precious metals.

2. Good thermal conductivity keeps metal from cooling too rapidly. Made of natural flake graphite and silicon carbide bonded with find clay, lined with mullite for long life.

Specification:

NO	Modle Number	Up Dia(mm)	Down Dia(mm)	High(mm)
1	80#	300	175	358
2	100#	326	200	366
3	120#	345	195	383
4	150#	370	192	430
5	200#	398	220	490
6	250#	450	240	550
7	300#	470	240	573
8	350#	485	275	610
9	400#	520	282	648
10	500#	540	313	698
11	800#	630	335	720
12	1000#	640	380	773

Q: What are the carbon elements? What are their structures? What are their properties and uses?: At the vertex of the carbon atom and the carbon atom adjacent vertices by SP hybrid orbital overlap to form a bond, three sigma bonds each carbon atom was a pentagonal edges and two hexagonal edges. Three sigma bond of carbon atoms is not coplanar, the bond angle is about 108 degrees or 120 degrees therefore, the whole molecule is spherical. A p orbital of each carbon atom with the rest of the overlap each other to form a containing 60 pi electron closed shell electronic structure, so in the spherical cage and the cage around the pi electron cloud. Molecular orbital calculations show that footballene delocalized can greatly. In recent years, scientists have found that in addition to diamond, graphite, and some new existence in the form of element carbon. The earlier found and has made important progress in the study of the C60 molecule.

Q: Are graphite crucibles suitable for melting superalloys?: Graphite crucibles are well-suited for the melting of superalloys due to their high melting point and excellent thermal conductivity. They are ideal for applications requiring elevated temperatures. Superalloys, known for their exceptional heat resistance and mechanical strength, often necessitate extreme temperatures for melting. Graphite crucibles can endure these high temperatures without deteriorating, ensuring a stable and reliable melting process for superalloys. Moreover, graphite crucibles exhibit good chemical resistance, which is crucial when melting superalloys that may contain reactive elements or corrosive impurities. In summary, graphite crucibles are widely favored in the aerospace, automotive, and manufacturing sectors for melting superalloys due to their durability, ability to withstand high temperatures, and chemical resistance.

Q: How do you determine the appropriate crucible capacity for a specific application?: When determining the suitable crucible capacity for a particular application, several factors must be taken into consideration. Firstly, the quantity of material that needs to be melted or heated in the crucible should be evaluated. This can be determined by considering either the volume or weight of the material. It is essential to select a crucible size that can accommodate the material adequately, avoiding both overflow and being too empty. These situations can negatively impact the heating efficiency and the final product's quality. Secondly, the required melting or heating temperature for the specific application needs to be considered. Different materials have varying melting points, and some may necessitate higher temperatures than others. The crucible should have the capacity to withstand and maintain the desired temperature without experiencing cracking or deformation. Moreover, the duration of the application needs to be taken into account. If the application requires an extended period of melting or heating, it is crucial to choose a crucible size that can hold the material for the required duration, eliminating the need for frequent refilling or emptying. This ensures a continuous and efficient operation. Additionally, the type of crucible material plays a significant role in determining the appropriate capacity. Various materials have different thermal conductivity and compatibility with specific substances. It is imperative to select a crucible material that is suitable for the specific application to prevent contamination or reactions between the crucible and the material being heated. Lastly, it is advisable to consult the manufacturer or supplier of the crucible for their recommendations. They possess the expertise and knowledge to guide you in selecting the appropriate crucible capacity based on your specific application requirements. By considering these factors and seeking expert advice, the appropriate crucible capacity for your specific application can be determined, ensuring optimal performance and desired results.

Q: What are the common defects found in graphite crucibles?: Common defects found in graphite crucibles include cracks, chips, erosion, and oxidation. These defects can occur due to thermal shock, mechanical stress, chemical reactions, or prolonged use at high temperatures.

Q: Can a graphite crucible be used for melting californium?: Using a graphite crucible to melt californium is not possible. This is because californium is an extremely reactive and radioactive element, necessitating specialized equipment for its handling and melting. While graphite crucibles are commonly utilized for melting and casting various metals and alloys due to their high melting point and heat resistance, californium possesses distinct properties and chemical behavior. Consequently, a crucible composed of a material capable of withstanding its intense levels of radioactivity and reactivity is required for californium handling.

Q: What are the different methods of preventing contamination from graphite particles?: There are several methods that can be used to prevent contamination from graphite particles. 1. Use of containment systems: One method is to use a containment system, such as an enclosed environment or a glove box, to prevent graphite particles from escaping into the surrounding area. These containment systems can be equipped with air filtration and ventilation systems to remove any graphite particles that may be present in the air. 2. Proper handling and storage: Another method of preventing contamination is to ensure that graphite particles are properly handled and stored. This may involve using sealed containers or bags to store graphite, and using appropriate handling techniques to minimize the release of particles into the environment. 3. Regular cleaning and maintenance: Regular cleaning and maintenance of equipment and surfaces that come into contact with graphite can help prevent contamination. This may involve using specialized cleaning methods, such as wet cleaning or vacuuming, to remove any graphite particles that may be present. 4. Personal protective equipment: Using personal protective equipment, such as gloves, masks, and coveralls, can help prevent contamination from graphite particles. These protective measures can help minimize direct contact with graphite, reducing the risk of contamination. 5. Proper training and education: Providing training and education to personnel who handle graphite can help raise awareness about the risks of contamination and the proper precautions to take. This can include training on proper handling techniques, the use of personal protective equipment, and the importance of regular cleaning and maintenance. By employing these methods, contamination from graphite particles can be effectively prevented, ensuring a safe and clean working environment.

Q: What are the common uses of graphite?: Because graphite has many excellent properties, it has been widely used in metallurgy, mechanical, electrical, chemical, textile, national defense and other industrial sectors.

Q: What are the different methods of preventing graphite crucible scaling?: There are several methods that can be employed to prevent graphite crucible scaling, which refers to the formation of surface oxidation or corrosion on the crucible. These methods include: 1. Pre-treatment: A common method is to pre-treat the graphite crucible before its initial use. This involves heating the crucible at a high temperature in an inert atmosphere, such as argon or nitrogen, which helps to form a protective layer on the surface of the crucible. This layer acts as a barrier against oxidation and prevents scaling during subsequent operations. 2. Coating: Applying a protective coating on the surface of the crucible can also help in preventing scaling. Coatings made of materials like boron nitride, zirconium diboride, or alumina can be used to create a barrier between the crucible and the reactive environment. These coatings have high resistance to oxidation and corrosion, thereby prolonging the crucible's lifespan. 3. Fluxing agents: Adding fluxing agents to the crucible charge can help reduce scaling. Fluxes like borax or potassium carbonate react with any impurities or oxides present in the crucible, forming a slag. This slag layer acts as a protective barrier, preventing further oxidation of the crucible. 4. Controlled atmosphere: Conducting operations in a controlled atmosphere can significantly reduce scaling. For example, using an inert gas like argon or nitrogen during the heating or melting process can create an oxygen-free environment, minimizing the chances of oxidation or scaling. This method is particularly effective for high-temperature applications. 5. Proper storage and handling: Proper storage and handling of the graphite crucible can also prevent scaling. It is crucial to keep the crucible in a dry and clean environment, away from any moisture or corrosive substances. Handling the crucible with clean gloves or tools can prevent contamination and minimize the risk of scaling. In conclusion, preventing graphite crucible scaling involves various methods, including pre-treatment, coating, the use of fluxing agents, controlled atmosphere, and proper storage and handling. Employing these measures can help extend the crucible's lifespan and ensure optimal performance in various high-temperature applications.

Q: How does the shape of a graphite crucible affect the melting process?: The shape of a graphite crucible can significantly affect the melting process. Graphite crucibles are commonly used in high-temperature applications such as melting metals, alloys, and other materials. The shape of the crucible determines the efficiency and effectiveness of the melting process. Firstly, the shape of the crucible affects the heating and cooling rates of the material being melted. A crucible with a wider and flatter shape will have a larger surface area exposed to the heat source, allowing for faster and more uniform heating. This can result in a quicker melting process and better heat distribution throughout the material. On the other hand, a crucible with a narrower and taller shape will have a smaller surface area exposed to the heat, which can lead to slower and less uniform heating. Secondly, the shape of the crucible can influence the convection currents within the material being melted. Convection currents are the flow of liquid or gas due to temperature differences. A crucible with a wide and shallow shape promotes the movement of the molten material, allowing for better mixing and homogenization. This can be particularly important when melting alloys or materials with different melting points. Conversely, a crucible with a narrow and deep shape may impede the movement of the molten material, resulting in less effective mixing and potential stratification. Additionally, the shape of the crucible can also affect the crucible's ability to withstand thermal expansion and contraction. During the melting process, the crucible is exposed to extreme temperatures, which can cause it to expand and contract. A crucible with a shape that allows for more even and controlled expansion and contraction is less likely to crack or break under thermal stress. In conclusion, the shape of a graphite crucible plays a crucial role in the melting process. A well-designed crucible shape can promote faster and more uniform heating, improve mixing and homogenization, and enhance the crucible's durability against thermal stress. Therefore, selecting the appropriate crucible shape is essential for achieving optimal melting results.

Q: Can a graphite crucible be used for melting magnetic materials?: No, a graphite crucible cannot be used for melting magnetic materials as graphite is not magnetic and will not interact with magnetic substances.

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1. Manufacturer Overview

Location	Guangdong,China (Mainland)
Year Established	2010
Annual Output Value
Main Markets	North America South America Eastern Europe Southeast Asia Africa Oceania Mid East Eastern Asia Western Europe
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a) Trade Capacity
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Export Percentage	61% - 70%
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Factory Size:	1,000-3,000 square meters
No. of Production Lines	Above 10
Contract Manufacturing	OEM Service Offered
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