Best Crucible Graphite - SIC Crucibles with High Heat Resistance

Best Crucible Graphite - SIC Crucibles with High Heat Resistance System 1

Best Crucible Graphite - SIC Crucibles with High Heat Resistance System 2

Best Crucible Graphite - SIC Crucibles with High Heat Resistance System 3

Best Crucible Graphite - SIC Crucibles with High Heat Resistance System 4

Best Crucible Graphite - SIC Crucibles with High Heat Resistance

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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 Crucibles,SIC Graphite Crucible, Graphite Crucible with Hihg Heat Resistance 2015

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

SiC Crucibles,SIC Graphite Crucible, Graphite Crucible with Hihg Heat Resistance 2015

Physicochemical Properties of graphite crucible:

Features of SiC 95% silicon carbide sic crucible

1. resistance to deformation at high temperature,

2. thermal shock resistance, wear resistance, corrosion resistance.

3. anti-oxidation, anti- erosion.

Usage of SiC 95% silicon carbide sic crucible

electricity and steel slag trench,

coal chemical and mining transport pipeline.

		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

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 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.

Q:How does the oxidation resistance of graphite affect the performance of a crucible?: The oxidation resistance of graphite greatly affects the performance of a crucible. Graphite is known for its high resistance to oxidation, meaning it can withstand high temperatures without reacting with oxygen in the air. This property is crucial in a crucible because it ensures that the graphite material does not burn or deteriorate when exposed to intense heat. A crucible with excellent oxidation resistance will have a longer lifespan, maintain its structural integrity, and prevent contamination of the materials being heated or melted inside.

Q:The difference between atomic absorption pyrolytic graphite tube and common graphite tube: Atomizer with different flame atomizer consists of three parts: atomizer, premixing chamber and burner. Features: easy operation and good reproducibility. Graphite furnace atomic device is a type of system will be placed in the pipe wall, graphite platform, carbon sample holes or graphite crucible with electric heating to a high temperature to achieve atomization. Tubular graphite furnace is the most commonly used atomization device. The atomization program is divided into drying, ashing, atomization and high temperature purification. The atomization efficiency is high: under the adjustable high temperature, the sample utilization rate is 100%. High sensitivity: the detection limit is 10-6~10-14. Small amount of sample: suitable for determination of refractory elements.

Q:How much temperature does a graphite crucible hold?: In theory, no problem, mainly depends on the working conditions used. If used under air, more than 400 degrees will start to be oxidized, and the service life will not be long. If it's vacuum, the one thousand or so should be nothing.

Q:How do you ensure uniform heating of a graphite crucible?: To ensure uniform heating of a graphite crucible, it is important to properly preheat the crucible before use. This can be done by placing the crucible in a furnace or heating device and gradually increasing the temperature to the desired level. Additionally, it is crucial to ensure that the heat source is evenly distributed around the crucible to prevent hotspots. This can be achieved by using a well-designed heating system that provides consistent heat distribution. Regularly rotating the crucible during the heating process can also help in achieving uniform heating.

Q:Why does China choose quartz crucible directly in the aspect of Czochralski silicon?: The oxygen in the quartz crucible can not be avoided, and other methods can be adopted to reduce oxygen.

Q:Can a graphite crucible be used for melting food-grade substances?: No, a graphite crucible should not be used for melting food-grade substances as graphite can react with the food and contaminate it. It is important to use food-grade materials specifically designed for heating and melting food substances.

Q:Can graphite crucibles be used for crystal growth?: Yes, graphite crucibles can be used for crystal growth. Graphite has several properties that make it suitable for this purpose. First, graphite has a high melting point, which allows it to withstand the high temperatures required for crystal growth. Second, graphite has good thermal conductivity, which ensures uniform heat distribution during the growth process. Third, graphite is chemically inert, meaning it does not react with most substances, which is important for maintaining the purity of the crystal being grown. Additionally, graphite crucibles are often used in crystal growth techniques such as the Czochralski method, where a seed crystal is dipped into a molten solution and slowly withdrawn to grow a larger crystal. In summary, graphite crucibles are commonly used and well-suited for crystal growth due to their high melting point, good thermal conductivity, and chemical inertness.

Q:Can a graphite crucible be used with induction heating?: Yes, a graphite crucible can be used with induction heating. Graphite has excellent thermal conductivity and high heat resistance, making it suitable for use in induction heating applications. Additionally, graphite crucibles can withstand the high temperatures and rapid heating and cooling cycles associated with induction heating processes.

Q:How do you prevent contamination of the melted material in a graphite crucible?: To avoid the contamination of the molten substance in a graphite crucible, there are several precautions that can be implemented: 1. It is crucial to properly clean and prepare the graphite crucible prior to its usage. It is imperative to remove any residual substance from previous uses completely. This can be accomplished by scrubbing the crucible with a brush and using an appropriate cleaning agent. 2. To prevent the transfer of any contaminants from hands onto the crucible's surface, it is important to handle the crucible with clean gloves. 3. When loading the substance into the crucible, it is essential to ensure that the material is devoid of impurities. Any foreign particles or contaminants should be eliminated before loading. 4. To minimize the risk of contamination, the crucible should be placed in a clean and controlled environment. It is advisable to avoid placing the crucible on surfaces that are dirty or contaminated, as this may compromise the integrity of the molten substance. 5. While transferring the crucible into the melting apparatus, caution should be exercised to prevent contact with any contaminants. The use of clean tools and equipment is crucial during this process. 6. Gradual and slow heating of the crucible can aid in the prevention of contamination. Rapid temperature changes can result in the vaporization of impurities or residues, leading to contamination of the molten substance. 7. It is recommended to utilize a lid or cover on the crucible during the melting process. This measure serves to prevent the entry of airborne contaminants into the crucible, thereby safeguarding the purity of the molten substance. 8. Regular inspection and maintenance of the crucible are necessary to identify any indications of contamination. If any contamination is detected, thorough cleaning of the crucible should be conducted before further use. By adhering to these preventative measures, the likelihood of contamination in a graphite crucible can be significantly decreased, ensuring the purity and integrity of the molten substance.

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