10kg Graphite Crucible - High Quality Graphite Products

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 50 Sets set

Supply Capability:: 5000 Sets per Month set/month

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Detailed Product Description

high purity graphite block, has good mechanical and chemical behaviours

High Purity Graphite is suitable for the graphite( anode, inner grid, outside grid,reverberation pole, and excitation) which is applied in all kinds of small size silver rectifier, and for the graphite(anode, grid) which is appplied in electronics tubes. It is used in monocrystal furnace as grapite heater, heating preservation cover,crucibles etc. The specification that our company mainly produces is as follows: Dia.40mm---275mm; height 100---150 and 2*120, 200*200, 200*320(Cube); Thickness 50---12. The special request can be customized.

Q:How is a graphite crucible used in the production of carbon composites?: The production of carbon composites relies heavily on the utilization of a graphite crucible. These composites are composed of carbon fibers embedded in a matrix material, typically a resin or a metal. During the production process, the graphite crucible serves as both a container and a mold for the molten matrix material. Its composition of graphite is specifically chosen due to its high melting point and exceptional thermal conductivity. This allows it to endure the extreme temperatures required for melting the matrix material, which can range anywhere from several hundred to several thousand degrees Celsius, depending on the specific composite being created. Initially, the carbon fibers are prepared by aligning them in a specific manner to achieve the desired mechanical properties of the final composite. These fibers are then inserted into the graphite crucible, taking on a predetermined shape or structure. Following this, the matrix material, such as a resin or metal, is heated until it reaches its melting point and is subsequently poured into the graphite crucible. By virtue of its superb heat conducting abilities, the crucible aids in distributing heat uniformly throughout the molten matrix material. This ensures consistency and prevents the formation of any hotspots or uneven curing. As the molten matrix material cools down, it solidifies around the carbon fibers, completely encapsulating them. This process, known as impregnation or infiltration, involves the matrix material filling the gaps between the carbon fibers, effectively binding them together and forming a solid composite structure. The graphite crucible plays a vital role in maintaining the desired shape and structure of the composite throughout this process. After the impregnation process is complete, the composite is allowed to cool and cure, resulting in a rigid and durable material with exceptional mechanical properties. Subsequently, the crucible is removed, leaving behind the carbon composite in the desired shape. In conclusion, the use of a graphite crucible is indispensable in the production of carbon composites. It provides a stable and controlled environment for the impregnation process, ensuring uniformity and consistency in the final composite product.

Q:What crucible can be used to make steel? At least 1500 degrees resistant: At this time, the surface of the liquid pig iron reacted violently, causing iron, silicon, manganese oxide (FeO, SiO2, MnO) to produce slag, using the convection action of molten steel and slag to make the reaction spread throughout the crucible furnace

Q:How do you determine the melting capacity of a graphite crucible?: To determine the melting capacity of a graphite crucible, there are several factors to consider. Firstly, the size and shape of the crucible play a significant role. The volume of molten material that a crucible can hold is directly related to its dimensions. Typically, crucibles are available in various sizes, so selecting the appropriate size for the desired melting capacity is crucial. Secondly, the material being melted and its corresponding melting point are important considerations. Different materials require different amounts of heat energy to reach their melting point. The melting capacity of a crucible should be determined based on the specific material being melted and its associated temperature. Thirdly, the quality and composition of the graphite used in the crucible is essential. High-quality graphite with good thermal conductivity and resistance to thermal shock can withstand higher temperatures and facilitate efficient heat transfer, resulting in a higher melting capacity. Lastly, the heating method and equipment used also influence the melting capacity. The heating rate, maximum temperature achievable, and the overall efficiency of the heating system can impact the crucible's ability to melt materials. To determine the melting capacity of a graphite crucible, one can refer to the manufacturer's specifications or consult with experts in the field. Additionally, conducting trial runs with small quantities of the material being melted can provide practical insights into the crucible's melting capacity. It is important to consider safety precautions and follow recommended guidelines when determining the melting capacity to avoid any damage to the crucible or potential hazards.

Q:Can graphite crucibles be used for eutectic growth?: Yes, graphite crucibles can be used for eutectic growth. Eutectic growth refers to the process of solidification of a eutectic alloy, which is a mixture of two or more metals or elements that have a specific composition and temperature at which they solidify together. Graphite crucibles are commonly used in high-temperature applications and have excellent thermal conductivity and resistance to chemical reactions. These properties make them suitable for holding and heating eutectic alloys to the required temperature for controlled solidification. Additionally, graphite crucibles have good thermal stability, allowing them to withstand the thermal cycling involved in the eutectic growth process. Therefore, graphite crucibles are a popular choice for eutectic growth experiments or industrial applications that require the controlled solidification of eutectic alloys.

Q:How do you prevent graphite crucibles from erosion during use?: To prevent erosion during the use of graphite crucibles, it is crucial to follow several key measures: 1. Begin with Proper Preconditioning: Prior to using a new graphite crucible, it is imperative to gradually heat it to high temperatures and then gradually cool it down. This process eliminates any impurities on the surface and enhances its erosion resistance. 2. Handle with Care: It is vital to handle graphite crucibles cautiously to prevent physical damage that may result in erosion. Avoid dropping or banging them against hard surfaces, and use appropriate tools for handling. 3. Control Heating and Cooling: Rapid and extreme temperature fluctuations can lead to thermal shock and expedite erosion. It is essential to heat and cool the crucible gradually and uniformly, avoiding sudden changes in temperature. 4. Choose the Right Flux: The selection of flux greatly impacts crucible erosion. It is important to opt for a flux that is compatible with graphite and has a minimal corrosive effect. Regularly check and maintain the flux composition to prevent erosion. 5. Maintain Regular Cleaning: After every use, it is crucial to thoroughly clean graphite crucibles to eliminate any residue or impurities that could cause erosion. Utilize appropriate cleaning techniques and materials to avoid scratching or damaging the crucible. 6. Prevent Contamination: Contamination from foreign materials can contribute to erosion. It is vital to ensure that only suitable materials are used in the crucible and that it does not come into contact with any foreign substances during use. By implementing these preventive measures, erosion can be significantly reduced, extending the lifespan of graphite crucibles and ensuring their optimal performance and cost-effectiveness.

Q:How do you ensure proper sealing of a graphite crucible?: To ensure proper sealing of a graphite crucible, it is important to follow these steps: 1. Clean the crucible: Thoroughly clean the graphite crucible using a brush or cloth to remove any debris or impurities that could affect the seal. 2. Inspect the crucible: Carefully examine the crucible for any cracks, chips, or other damages that could compromise the seal. If any defects are found, it is best to replace the crucible. 3. Apply a sealant: Use a suitable sealant, such as graphite powder or a high-temperature adhesive, to create a tight seal between the lid and the crucible. Apply the sealant evenly along the contact surface to ensure a proper bond. 4. Secure the lid: Place the lid on the crucible and make sure it aligns correctly. Apply gentle pressure to ensure a tight fit. If the crucible has clamps or screws, tighten them according to the manufacturer's instructions. 5. Preheat the crucible: Before using the crucible, it is essential to preheat it gradually to allow the sealant to cure properly. Follow the recommended preheating process provided by the crucible manufacturer. By following these steps, you can ensure the proper sealing of a graphite crucible, minimizing the risk of any leaks or contamination during its use.

Q:Can graphite crucibles be used for semiconductor manufacturing?: No, graphite crucibles cannot be used for semiconductor manufacturing.

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:Application of ceramic fiber module in gas crucible furnace: The ceramic fiber module plays a major role in fireproof and heat preservation in the gas clamp boiler, and prolongs the service life of the Tong boiler. According to the different materials of the gas tongs boiler, the refractory and heat preservation materials used are different, and the ceramic fiber module, refractory fiber board and refractory pouring material are all the heat preservation materials used by the conventional clamp boilers.

Q:Does a graphite crucible require any preheating before use?: Yes, a graphite crucible typically requires preheating before use. This is because graphite crucibles are often used in high-temperature applications, such as melting metals or performing other heat-intensive processes. Preheating the crucible helps to reduce thermal shock and prevent cracks or damage to the crucible. Additionally, preheating helps to remove any moisture or impurities that may be present in the crucible, ensuring a clean and reliable container for the intended application. It is important to follow the manufacturer's instructions and guidelines for preheating to ensure the proper use and longevity of the graphite crucible.

Our products are sold all over the country, and exported to America, Germany, Spain, India, Japan and Korea. Besides, we have strict management and advanced production technology. We promise we will win more clients and a larger market with honest commercial credit, high quality of products, competitive price and good service.

1. Manufacturer Overview
Location	Inner Mongolia,China (Mainland)
Year Established	2006
Annual Output Value	US$2.5 Million - US$5 Million
Main Markets	7.14% North America 7.14% South America 7.14% Eastern Europe 7.14% Southeast Asia 7.14% Africa 7.14% Oceania 7.14% Mid East 7.14% Eastern Asia 7.14% Western Europe 7.14% Central America 7.14% Northern Europe 7.14% Southern Europe 7.14% South Asia 7.14% Domestic Market
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2. Manufacturer Certificates
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Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Xingang,Tianjin
Export Percentage	31% - 40%
No.of Employees in Trade Department	21-50 People
Language Spoken:	English, Chinese
b)Factory Information
Factory Size:	1,000-3,000 square meters
No. of Production Lines	7
Contract Manufacturing	1,000-3,000 square meters
Product Price Range	Low and/or Average