Silicon Graphite Crucible for Melting Aluminium, Copper, Brass

Silicon Graphite Crucible for Melting Aluminium, Copper, Brass System 1

Silicon Graphite Crucible for Melting Aluminium, Copper, Brass System 2

Silicon Graphite Crucible for Melting Aluminium, Copper, Brass System 3

Silicon Graphite Crucible for Melting Aluminium, Copper, Brass

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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 For Melting Aluminium And Copper, Brass

Physicochemical Properties of graphite crucible:

The crucible is an utensil or melting tank vessels that is made of refractory material (such as clay, graphite, quartz or difficult molten metal iron, etc.).

Graphite crucible, with is special advantages and Plasticity, is widely used in the smelting area, e.g. gold smelting, silver smelting, aluminum smelting, cooper smelting, etc.

		high pure graphite
Item	Unit	baked twice	baked three time	baked four times
Item	Unit	impregnated once	impregnated twice	impregnated three times
grain size	mm	≤325μm	≤325μm	≤325μm
Bulk density	g/cm3	≥1.68	≥1.78	≥1.85
Specific resistance	μΩ.m	≤14	≤14	≤13
Bending strength	MPa	≥25	≥40	≥45
Compressive strength	MPa	≥50	≥60	≥65
Ash content	%	≤0.15	≤0.1	≤0.05

		Fine-grain Specialty Graphite FXG-1		Fine-grain Specialty Graphite FXG-2
Item	Unit	Guarantee value	Typical value	Guarantee value	Typical value
Item	Unit	Guarantee value	Typical value	Guarantee value	Typical value
Max grain size	mm	0.8	0.8	0.8	0.8
Bulk density	g/cm3	≥1.70	1.73	≥1.73	1.76
Specific resistance	μΩ.m	≤8.5	7.5	≤8.0	7
Bending strength	MPa	≥10.0	11	≥12.0	12.5
Compressive strength	MPa	≥24.0	27	≥31.0	34
Thermal Condcutivity	W/(m.k)	≥120	150	≥130	160
C.T.E.(100-600) °C	10-6/°C	≤2.5	2.2	≤2.5	2.1
Ash content	%	≤0.3	0.09	≤0.3	0.09

NO	Top diameter	Bottom diameter	Height	Tolerance	Capacity(Kg5%)
2	90	50	55	2	0.3
3	105	80	93	2	0.5
4	102	80	100	2	0.6
5	112	82	130	2	0.8
6	120	82	141	2	0.9
8	138	90	153	2	1.2
12	148	100	181	2	1.8
16	156	110	190	2	2.3
20	180	120	230	2	3
25	186	128	248	2	3.7

Packaging & Shipping

Package: Wooden case and wooden pallet or pack as customer's requirement of graphite crucible.

Delivery time: depend on distance, usually 20 days to 50days after deposit of graphite crucible.

We can supply the products according to customer's drawings, samples and performance requirement.

Other Products

SiC Crucibles For Melting Aluminium And Copper, Brass

FAQ

1.What's your MOQ?

We will indicate the MOQ for each item in the quotation list. We accept the sample and trail order.

2.Can I negotiate the Prices?

Sure, we may consider discounts for bulk order of products.

3.How long will it take to complete my order?

For the stock items, we can arrange the shippment within 2~3days after received your payment. For the customized items, we will indicate the delivery time in the quotation list.

4.Can you give warranty of your products?

Yes, we extend a 100% satifisfaction guarantee on all items. Please feel free to provide timely feedback if you're not satisfied with N&D's Quality and Service. For the overseas orders, if there is a quality problem, please kindly to provide the picturers to show the problem by e-mail. We will provide the replacements to you at our cost according to actual conditions.

5.Can I visit you?

Sure. If you're a volume buyer and would like to visit our in-house products and production line, please contact us to make an appointment.

Q:What is graphite?: Of the six Fang system with a complete lamellar cleavage. The cleavage surface is mainly based on molecular bonds, and has weaker molecular attraction, so its natural floatability is very good.

Q:How does the thermal stability of graphite affect the performance of a crucible?: The thermal stability of graphite greatly affects the performance of a crucible. Graphite is known for its high melting point and excellent resistance to thermal shock, making it a suitable material for crucibles. Its ability to withstand high temperatures without deforming or cracking ensures that the crucible maintains its shape and integrity during the intense heat of various industrial processes such as melting metals or glass. Additionally, graphite's thermal stability helps in evenly distributing heat within the crucible, allowing for efficient and consistent heat transfer. Overall, the thermal stability of graphite plays a crucial role in ensuring the durability and performance of a crucible in extreme temperature conditions.

Q:How do you prevent graphite crucibles from reacting with the melted material?: One effective way to prevent graphite crucibles from reacting with the melted material is by coating the crucible with a protective layer, such as a ceramic or refractory coating. This coating acts as a barrier between the crucible and the melted material, preventing any chemical reactions or contamination. Additionally, using a suitable crucible material with high purity graphite and low impurity levels can also help minimize any reactions.

Q:Can graphite crucibles be used for melting nickel?: Yes, graphite crucibles can be used for melting nickel. Graphite has high thermal conductivity and can withstand high temperatures, making it suitable for melting metals like nickel.

Q:How do you prevent graphite crucibles from overheating during use?: To prevent graphite crucibles from overheating during use, there are several measures that can be taken: 1. Proper preheating: Before using the crucible, it is essential to preheat it gradually. Rapid heating can cause thermal shock and lead to cracking or even complete failure of the crucible. Start by placing the cold crucible in a cool furnace and gradually increase the temperature at a controlled rate until it reaches the desired operating temperature. 2. Avoid direct contact with flames: Graphite crucibles should not be exposed directly to flames. The intense heat from open flames can cause rapid and uneven heating, leading to overheating and damage. Instead, it is recommended to use a heating element or an indirect heat source, such as an electric furnace or an induction heater, to ensure more uniform and controlled heating. 3. Use appropriate heating rates: Avoid sudden temperature changes by controlling the heating rate. Rapid heating can cause thermal stress and lead to crucible failure. It is advisable to follow the manufacturer's guidelines or recommendations for the specific type of crucible being used. Generally, it is best to heat the crucible slowly and steadily to prevent overheating and potential damage. 4. Maintain proper furnace controls: Ensure that the furnace or heating equipment being used has accurate temperature controls and monitoring systems. These controls help maintain a consistent temperature, preventing overheating of the crucible. Regular maintenance and calibration of the furnace are crucial to ensure accurate temperature readings and proper functioning. 5. Adequate cooling time: After use, allow the crucible to cool down naturally inside the furnace or heating equipment before removing it. Rapid cooling, such as exposing the hot crucible to cold air or water, can cause thermal shock and lead to cracks or breakage. Patience is important to prevent overheating during the cooling process. 6. Regular inspection and maintenance: Regularly inspect the crucible for any signs of damage, such as cracks, erosion, or wear. Small cracks or damage can lead to overheating and failure. If any issues are detected, replace the crucible promptly to avoid potential hazards or accidents. By following these preventive measures and practicing proper handling and maintenance techniques, it is possible to prevent graphite crucibles from overheating and extend their lifespan, ensuring optimal performance and efficiency.

Q:Are graphite crucibles suitable for rapid prototyping processes?: No, graphite crucibles are not suitable for rapid prototyping processes. Graphite crucibles are commonly used for melting and casting processes due to their high melting point and excellent heat resistance. However, for rapid prototyping, materials like plastic or metal are typically used, as they can be easily molded or machined to create prototypes quickly and accurately.

Q:How do you prevent carbon contamination in a graphite crucible?: There are several steps one can take to prevent carbon contamination in a graphite crucible: 1. Thorough cleaning is essential. Before using the crucible, it should be cleaned meticulously to eliminate any residual carbon or impurities. This can be achieved by scrubbing the crucible with a mild detergent and rinsing it with distilled water. It is crucial to avoid using abrasive cleaners or brushes that could potentially damage the crucible. 2. Preheating the graphite crucible can be beneficial in removing any remaining impurities. This can be accomplished by placing the crucible in a furnace or kiln and gradually increasing the temperature to approximately 1000°C (1832°F). It is important to perform this process slowly to prevent thermal shock and cracking of the crucible. 3. Proper handling is crucial. When handling the graphite crucible, it is important to refrain from touching the interior surface with bare hands, as this could transfer oils and contaminants. It is advisable to wear gloves or use clean, lint-free tools when working with the crucible. 4. Maintaining a controlled atmosphere is another preventive measure. Exposure to air or other reactive gases can lead to carbon contamination. To prevent this, it is recommended to use the crucible in a controlled atmosphere, such as a vacuum or inert gas environment. This can effectively reduce the likelihood of carbon contamination. 5. Overheating should be avoided. Excessive heat can cause the graphite crucible to react with the processed materials, resulting in carbon contamination. It is essential to carefully monitor and control the temperature during heating or melting processes to prevent overheating of the crucible. By adhering to these preventive measures, carbon contamination in a graphite crucible can be significantly minimized, ensuring the purity and integrity of the processed materials.

Q:Can graphite crucibles be used with induction heating?: Yes, graphite crucibles can be used with induction heating. Graphite is a good conductor of electricity and is highly resistant to heat, making it an ideal material for use in induction heating applications. Induction heating works by generating an alternating magnetic field, which induces electrical currents within conductive materials like graphite. These currents generate heat due to the resistance of the material, allowing the graphite crucible to reach high temperatures quickly and efficiently. Additionally, graphite crucibles have the advantage of being chemically inert, making them suitable for a wide range of applications, including inductive heating processes.

Q:Are there different sizes available for graphite crucibles?: Yes, there are different sizes available for graphite crucibles.

Q:How do you determine the appropriate crucible pouring lip for a specific application?: The appropriate crucible pouring lip for a specific application is usually determined by considering factors such as the desired pouring speed, the material being poured, the temperature, and the required precision. It is important to choose a lip design that allows for controlled and accurate pouring without spilling or splashing, while also considering the ease of handling and the size of the crucible.

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