Clay Graphite Crucible,SiC Crucibles For Melting Aluminium And Copper, Brass

Clay Graphite Crucible,SiC Crucibles For Melting Aluminium And Copper, Brass System 1

Clay Graphite Crucible,SiC Crucibles For Melting Aluminium And Copper, Brass System 2

Clay Graphite Crucible,SiC Crucibles For Melting Aluminium And Copper, Brass System 3

Clay Graphite Crucible,SiC Crucibles For Melting Aluminium And 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

Clay Graphite Crucible,SiC Crucibles For Melting Aluminium And Copper, Brass

Physicochemical Properties

Type of Crucible	Type S	Type D
Carbon Content/%	≥38	≥45
Bulk Density/(g/cm3)	≥1.70	≥1.85
Apparent Porosity/%	≤29	≤21
Compression Strength/MPa	≥20	≥25
Refractoriness/°C	≥1400	≥1400

Type S: Clay graphite crucible

Type D: Isostatic pressing graphite crucible

Cited from CNS China National Standard of Graphite Crucible, which is solely drifted by TIANFU company.

Content Composition

C%	Sic%	AL2O3%	SIO2%
45%-50%	20%-30%	10%-12%	15-25%

Sic%

AL2O3%

SIO2%

45%-50%

20%-30%

10%-12%

15-25%

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:Are there any special precautions to be taken while using graphite crucibles?: Yes, there are several special precautions that should be taken while using graphite crucibles. First, it is important to handle graphite crucibles with care as they are fragile and can break easily. Avoid dropping or mishandling them to prevent cracks or damage. Secondly, graphite crucibles should be stored in a clean and dry environment to prevent any contamination. Graphite is susceptible to absorbing impurities from the surroundings, which can affect its performance and durability. During use, it is crucial to avoid exposing graphite crucibles to rapid temperature changes. Sudden heating or cooling can cause thermal shock, leading to cracks or even breakage. To prevent this, it is recommended to gradually heat or cool the crucible within the recommended temperature range. Additionally, graphite crucibles should be properly seasoned or preheated before using them for the first time. This involves slowly heating the crucible to a specific temperature to remove any moisture or volatile substances that might be present. Failure to properly season the crucible can lead to cracking or premature failure during subsequent use. Furthermore, it is important to avoid overloading the crucible with excessive material. Graphite crucibles have specific capacity limits, and exceeding these limits can cause the crucible to fail or reduce its lifespan. Lastly, when handling molten materials or pouring them into the crucible, appropriate personal protective equipment should be worn. This includes heat-resistant gloves, face shields, and other protective clothing to prevent burns or injuries. By following these precautions, users can maximize the lifespan and performance of graphite crucibles while ensuring safe and effective use.

Q:How long can a graphite crucible last for a long time?: When the temperature increases, the graphite crucible not only does not soften, but the strength is increased. At 2500 degrees, the tensile strength of graphite increases by one time.

Q:What are the common defects found in graphite crucibles?: Some common defects found in graphite crucibles include cracks, erosion, contamination, and thermal shock. Cracks can occur due to thermal cycling or excessive stress, compromising the structural integrity of the crucible. These cracks can lead to leakage or failure during use, rendering the crucible unusable. Erosion is another common defect, especially when the crucible is used with aggressive or corrosive materials. Over time, the graphite can wear away, reducing the crucible's capacity or causing it to break down prematurely. Contamination is a significant issue in graphite crucibles, as impurities can contaminate the materials being processed. This can result in poor product quality or unwanted reactions. Contamination can occur due to poor crucible manufacturing practices, improper cleaning, or the use of low-quality graphite. Thermal shock is a defect caused by rapid temperature changes, which can lead to the crucible cracking or breaking. This defect can occur if the crucible is subjected to extreme temperature variations without proper preheating or cooling precautions. To mitigate these defects, it is essential to choose high-quality graphite crucibles that are resistant to thermal shock and erosion. Proper handling, preheating, and cooling procedures should be followed to prevent thermal shock. Additionally, regular inspection and maintenance can help identify any cracks or erosion early on, allowing for timely repair or replacement.

Q:Why can't a f containing compound be used in a porcelain crucible, a Lilac Garden?: The main components of a porcelain crucible are alumina and silica, while fluorine is very oxidizing, and at high temperature fluorine will replace the oxygen in the oxide and corrode the crucible. Although the contents of the crucible may not be sufficient to penetrate the crucible, the accuracy of the experiment will be affected by the fact that the crucible is not dissolved in the content of the component.

Q:Can a graphite crucible be used for bronze casting?: Certainly, bronze casting can utilize a graphite crucible. The utilization of graphite crucibles is widespread in metal casting procedures due to their remarkable thermal conductivity, high melting point, and resistance to thermal shock. In contrast to graphite, bronze, an amalgamation of copper and tin, generally possesses a lower melting point, making it a fitting material for casting within a graphite crucible. Moreover, graphite crucibles provide commendable chemical stability, a pivotal factor when operating with molten metals. Nevertheless, it is imperative to underscore the significance of adequately seasoning and preheating the crucible to avoid any potential reactions between the molten bronze and the graphite crucible.

Q:Disadvantages of graphite crucibles: The graphite crucible is much better than the traditional crucible, to say the disadvantage is that the technical requirements are very high, and the life of the imported crucible and the domestic crucible is about 3:1.

Q:What are the considerations for selecting a crucible furnace for graphite crucibles?: When choosing a crucible furnace for graphite crucibles, there are several important factors to take into consideration. To begin with, the temperature range and heating capabilities of the furnace are crucial. Graphite crucibles are commonly used in high-temperature applications, so it is essential that the furnace can reach and maintain the required temperatures for the specific process. It is important to make sure that the furnace can achieve the desired temperature range without compromising the integrity of the crucible or the materials being processed. Another factor to consider is the atmosphere control within the furnace. Graphite crucibles can be sensitive to certain atmospheres, such as oxidizing or reducing conditions. Therefore, it is necessary to select a furnace that offers appropriate atmosphere control to prevent any undesired reactions or degradation of the crucible and the materials being processed. Additionally, the size and capacity of the furnace should be taken into account. The furnace should be able to accommodate the size of the graphite crucibles used in the process. Moreover, it should have enough capacity to hold the required number of crucibles for efficient and productive operations. The heating method employed by the furnace is another important consideration. Different heating methods, such as electric resistance, induction, or gas-fired, can have varying effects on the performance and lifespan of graphite crucibles. It is necessary to evaluate the heating method and its compatibility with graphite crucibles to ensure optimal performance and longevity. Furthermore, the overall construction and design of the furnace should be considered. The furnace should be well-insulated to minimize heat loss and energy consumption. It should also have a reliable and precise temperature control system to ensure accurate and consistent heating. Additionally, it should be user-friendly, easy to maintain, and repair. Cost is also an important factor to consider. The initial investment cost of the furnace, as well as the operational costs, should be evaluated in relation to the budget and the expected return on investment. Lastly, it is advisable to seek recommendations and advice from experts or suppliers who specialize in graphite crucibles and furnace systems. They can provide valuable insights and guidance based on their expertise and experience, helping to ensure the selection of the most suitable crucible furnace for the specific application.

Q:The difference between single graphite furnace graphite furnace atomic absorption spectrophotometer and double graphite furnace: Flame atomizer: it consists of three parts: sprayer, 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 purificationThe atomization efficiency is high: under the adjustable high temperature, the sample utilization rate is 100%High sensitivity: the detection limit is 10-6~10-14Small amount of sample: suitable for determination of refractory elements

Q:How to extract gold from activated carbon filter?: High temperature roasting filter core with graphite crucible and acetylene burner.

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