5 Kg Graphite Crucible - SIC Crucibles, SIC Graphite Crucible, Graphite Crucible 2024

5 Kg Graphite Crucible - SIC Crucibles, SIC Graphite Crucible, Graphite Crucible 2024 System 1

5 Kg Graphite Crucible - SIC Crucibles, SIC Graphite Crucible, Graphite Crucible 2024 System 2

5 Kg Graphite Crucible - SIC Crucibles, SIC Graphite Crucible, Graphite Crucible 2024 System 3

5 Kg Graphite Crucible - SIC Crucibles, SIC Graphite Crucible, Graphite Crucible 2024

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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 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

SiC Crucibles,SIC Graphite Crucible, Graphite Crucible 2015

Graphite crucible can withstand the high temperature, and has good resistance to chemical erosions and thermal shock. Especially graphite crucible is ideal for the melting of aluminum, copper and etc.

Bulk Density	g/cc	1.70-1.88
Specific Resistance	μΩ.m	6.0-15.0
Compressive Strength	MPa	30-80
Bending Strength	MPa	20-45
Shore hardness		30-70
C.T.E.(100-600°C)	x10-6 /°C	2.5-5.5
Ash	%	0.01-0.2
Maximum Grain Size	mm	0.044-0

Q:What are the common sizes available for graphite crucibles?: Graphite crucibles can be found in various sizes to accommodate different applications and industries. The typical sizes for graphite crucibles include 1kg, 2kg, 3kg, 4kg, 6kg, 8kg, 10kg, 12kg, 16kg, 20kg, 25kg, and 30kg. These sizes are commonly utilized in metallurgical, chemical, and scientific laboratories, as well as in jewelry making, metal casting, and manufacturing industries. Nevertheless, it is crucial to acknowledge that the range of available sizes might differ depending on the specific manufacturer or supplier.

Q:Can graphite crucibles be used for electron beam melting processes?: Graphite crucibles are indeed capable of being used in electron beam melting processes. They possess exceptional thermal conductivity, a high melting point, and commendable resistance to chemical attack, rendering them appropriate for high-temperature applications like electron beam melting. The remarkable thermal conductivity of graphite aids in the effective transfer of heat, thereby enabling uniform heating and melting of the material. Moreover, graphite crucibles exhibit excellent dimensional stability, a vital factor in ensuring precise control over the melting process. Consequently, graphite crucibles are widely favored in electron beam melting processes due to their advantageous attributes.

Q:How is a graphite crucible manufactured?: The process of manufacturing a graphite crucible typically involves isostatic pressing. This technique encompasses placing graphite powder into a mold and subjecting it to high pressure from all directions. By doing so, the graphite particles become evenly compacted, resulting in a dense and uniform crucible. To begin the manufacturing process, the appropriate graphite material must be selected. Typically, high-quality graphite with a low ash content is chosen due to its exceptional thermal conductivity, resistance to high temperatures, and chemical stability. The graphite is then milled into a fine powder to ensure consistent particle size. The next step involves pouring the graphite powder into a flexible rubber mold, which is designed to withstand the high pressure applied during isostatic pressing. It is crucial to carefully seal the mold to prevent any leakage of graphite powder. The sealed mold is then placed inside a high-pressure vessel where hydraulic pressure is applied uniformly from all directions. This pressure compacts the graphite particles, eliminating any voids or porous areas. Moreover, the high pressure helps align the graphite particles, resulting in enhanced mechanical properties. Once the pressing process is complete, the mold is removed, leaving behind a green crucible. This green crucible undergoes a baking process known as carbonization. During carbonization, the crucible is exposed to temperatures of approximately 3000 degrees Celsius in an inert atmosphere. This procedure eliminates volatile materials and further strengthens the crucible. Following carbonization, the crucible undergoes a final machining process to achieve the desired dimensions and a smooth surface finish. This may involve precision grinding, turning, or milling to ensure the crucible meets the required specifications. In summary, the manufacturing of a graphite crucible involves isostatic pressing, which entails compacting graphite powder under high pressure. This process, combined with carbonization and machining, guarantees that the crucible possesses excellent thermal conductivity, resistance to high temperatures, and chemical stability.

Q:How do you prevent contamination from the graphite crucible during melting?: To prevent contamination from the graphite crucible during melting, several measures can be taken. One approach is to ensure that the crucible is thoroughly cleaned and free from any impurities before use. Additionally, using high-quality graphite crucibles that are specifically designed for high-temperature applications can minimize the risk of contamination. It is also crucial to handle the crucible with clean and dry tools to avoid introducing foreign substances. Finally, maintaining a controlled and stable melting environment, such as using a protective atmosphere or vacuum, can further prevent contamination by preventing the reaction of the crucible with surrounding gases or materials.

Q:Can a graphite crucible be used for aluminum melting?: Yes, a graphite crucible can be used for aluminum melting. Graphite is a commonly used material for crucibles due to its high melting point, thermal conductivity, and resistance to chemical attack. It can withstand the high temperatures required for melting aluminum, which typically range from 660°C to 700°C (1220°F to 1290°F). Additionally, graphite crucibles have good thermal shock resistance, allowing them to handle the rapid temperature changes associated with the aluminum melting process. However, it is important to note that graphite crucibles may oxidize at high temperatures, leading to the formation of a graphite oxide layer on the crucible's surface. This oxide layer can affect the purity of the melted aluminum. Therefore, it is advisable to use a new or properly cleaned graphite crucible to minimize any potential contamination.

Q:Does a graphite crucible react with any substances during use?: No, a graphite crucible does not react with any substances during use. Graphite is chemically inert and has a high melting point, making it ideal for use in high-temperature applications such as melting metals. It does not react with the materials being melted or with any other substances present in the crucible. This property of graphite allows for the safe and efficient handling of various substances during processes such as metal casting, melting glass, or performing chemical reactions.

Q:What are the differences in production techniques for different graphite crucible models?: Graphite crucible is one of the indispensable tools in modern metallurgical industry. Especially when smelting special and non-ferrous metals and their alloys, graphite crucibles still need to be used.

Q:Is it possible to cast or mold materials using a graphite crucible?: Yes, it is possible to cast or mold materials using a graphite crucible. Graphite crucibles are widely used in various industries, including foundries, jewelry making, and metal casting. Graphite has high thermal conductivity and can withstand high temperatures, making it an ideal material for melting and casting processes. It is commonly used for melting metals, alloys, and other materials that require high heat resistance. The graphite crucible provides a controlled environment for the molten material, ensuring efficient and precise casting or molding.

Q:What is the white product in the crucible?: What is the white product in the crucible?

Q:How do you prevent graphite crucibles from cracking or breaking?: To prevent graphite crucibles from cracking or breaking, there are several key factors to consider: 1. Proper handling: Graphite crucibles should be handled with care, avoiding any impact or rough handling that could cause stress and potential damage. Always use appropriate lifting tools and avoid dropping or hitting the crucibles against hard surfaces. 2. Controlled heating and cooling: Graphite crucibles should be heated and cooled gradually to prevent thermal shock. Sudden temperature changes can cause stress and cracks in the crucible. It is recommended to use a programmable furnace or kiln that allows for controlled and gradual temperature changes. 3. Preheating: Before using a new graphite crucible or when reusing a previously used one, it is important to preheat it slowly to remove any moisture or impurities that could cause thermal expansion and lead to cracking. This can be done by gradually increasing the temperature in the furnace. 4. Avoid overloading: Graphite crucibles have a maximum capacity that should not be exceeded. Overloading the crucible can cause excessive stress during heating and may lead to cracks or breakage. Always follow the manufacturer's recommendations regarding the maximum capacity of the crucible. 5. Avoid rapid cooling: After using a graphite crucible, it is important to allow it to cool down gradually. Avoid exposing the hot crucible to cold air or water, as rapid cooling can cause thermal shock and result in cracking. Instead, let it cool naturally in the furnace or kiln before removing it. 6. Regular maintenance: Inspect graphite crucibles regularly for any signs of wear, such as cracks, chips, or erosion. Replace any damaged crucibles immediately to avoid further damage during use. Additionally, proper cleaning and storage of crucibles when not in use can help prolong their lifespan. By following these guidelines, you can greatly reduce the risk of cracking or breaking graphite crucibles, ensuring their longevity and optimal performance in various applications.

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