Silicon Carbide Graphite Crucible Amazon

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 5 Pieces pc

Supply Capability:: 10000 Pieces per Month pc/month

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Detailed Product Description

1. Top quality crucibles offer consistent performance when melting ferrous, onferrous and precious metals.

2. Good thermal conductivity keeps metal from cooling too rapidly. Made of natural flake graphite and silicon carbide bonded with find clay, lined with mullite for long life.

Specification:

NO	Modle Number	Up Dia(mm)	Down Dia(mm)	High(mm)
1	80#	300	175	358
2	100#	326	200	366
3	120#	345	195	383
4	150#	370	192	430
5	200#	398	220	490
6	250#	450	240	550
7	300#	470	240	573
8	350#	485	275	610
9	400#	520	282	648
10	500#	540	313	698
11	800#	630	335	720
12	1000#	640	380	773

Q: Are there any specific storage requirements for graphite crucibles?: Yes, graphite crucibles have specific storage requirements. They should be stored in a dry and cool environment to prevent oxidation and damage. It is essential to keep them away from moisture, direct sunlight, and extreme temperature fluctuations. Additionally, they should be stored in a clean area to avoid contamination from dust or other substances.

Q: Can a graphite crucible be used for laser melting applications?: No, a graphite crucible cannot be used for laser melting applications because graphite has a high absorption rate for laser energy, which would cause it to quickly heat up and potentially damage the crucible.

Q: Are there any alternative materials to graphite for crucibles?: Yes, there are alternative materials to graphite for crucibles. Some common alternatives include ceramic, quartz, boron nitride, and certain types of metals such as platinum or stainless steel. These alternative materials are chosen based on specific requirements such as high temperature resistance, chemical inertness, and thermal conductivity.

Q: How does the thermal conductivity of the molten metal affect the performance of a crucible?: The performance of a crucible is determined by the thermal conductivity of the molten metal, which plays a crucial role. Thermal conductivity refers to a material's ability to conduct heat, and in the case of a crucible, it directly impacts its ability to withstand and distribute high temperatures. A high thermal conductivity in the molten metal enables faster heat transfer from the crucible, leading to a more uniform distribution of heat. This is advantageous as it allows for quicker and more efficient melting or heating of the metal inside the crucible. It also helps maintain a consistent temperature throughout the crucible, which is vital in certain industrial processes that require precise temperature control. Conversely, a low thermal conductivity in the molten metal can have detrimental effects on the performance of a crucible. It can cause uneven heat distribution, resulting in hot spots or cold spots within the crucible. This unevenness can lead to inconsistent melting or heating of the metal, resulting in poor quality or incomplete reactions in industrial processes. Moreover, the lack of efficient heat transfer can potentially cause overheating in certain areas of the crucible, leading to premature failure or damage. In conclusion, the thermal conductivity of the molten metal directly impacts the performance of a crucible. A high thermal conductivity enables faster and more efficient heat transfer, leading to better temperature control and more effective industrial processes. Conversely, a low thermal conductivity can cause uneven heat distribution and potential damage to the crucible, thereby compromising its performance.

Q: When decomposing iron ore, why should it be carried out at low temperature?: The decomposition of iron ore, in practical applications, is based on the characteristics of the ores, the requirements of the analytical items, and the separation of interfering elements. Acid decomposition and alkali melting are usually employed.

Q: How long can a graphite crucible last?: The lifespan of a graphite crucible can vary depending on several factors such as the quality of the graphite used, the type of material being melted, the temperature at which it is used, and the care and maintenance practices followed. Generally, a graphite crucible can last for several months to several years. If used for lower temperature applications or with non-reactive materials, it can have a longer lifespan. On the other hand, if used for high-temperature applications or with corrosive materials, the crucible may wear out more quickly. Over time, the repeated heating and cooling cycles, as well as exposure to different chemicals, can cause the graphite crucible to develop cracks, erosion, or other signs of wear. It is important to regularly inspect the crucible for any damage and replace it if necessary to ensure the quality and safety of the melting process. Proper care and maintenance can also extend the lifespan of a graphite crucible. This includes preheating the crucible before use, avoiding thermal shock by gradually heating and cooling the crucible, and cleaning it properly after each use. Using appropriate crucible handling tools and avoiding rough handling can also help avoid unnecessary damage. In conclusion, while there is no exact lifespan for a graphite crucible, it can last for several months to several years depending on various factors. Regular inspection, proper care, and maintenance are crucial in maximizing the lifespan and performance of the crucible.

Q: How do you prevent graphite crucibles from erosion during use?: Graphite crucibles can be prevented from erosion during use by following a few key measures: 1. Proper Preconditioning: Before using a new graphite crucible, it is important to precondition it by gradually heating it to high temperatures and gradually cooling it down. This process helps to remove any impurities from the surface and increases its resistance to erosion. 2. Appropriate Handling: Graphite crucibles should be handled with care to avoid any physical damage that could lead to erosion. Avoid dropping or banging them against hard surfaces, and use proper tools when handling them. 3. Controlled Heating and Cooling: Rapid and extreme temperature changes can cause thermal shock and accelerate erosion. It is essential to heat and cool the crucible gradually and uniformly, avoiding sudden temperature fluctuations. 4. Proper Flux Selection: The type and quality of flux used can greatly influence crucible erosion. It is important to select a flux that is compatible with graphite and has a low corrosive effect. Regularly checking and maintaining the flux composition is essential to prevent erosion. 5. Regular Cleaning and Maintenance: After each use, graphite crucibles should be thoroughly cleaned to remove any residue or impurities that could cause erosion. Using appropriate cleaning techniques and materials is crucial to prevent scratching or damaging the crucible. 6. Avoiding Contamination: Contamination from foreign materials can also contribute to erosion. It is important to ensure that only appropriate materials are used in the crucible, and that no foreign substances come into contact with it during use. By implementing these preventive measures, one can significantly reduce erosion and extend the lifespan of graphite crucibles, ensuring their optimal performance and cost-effectiveness.

Q: What are the considerations for selecting a crucible support for graphite crucibles?: When selecting a crucible support for graphite crucibles, several considerations come into play. Firstly, the material of the support must be compatible with graphite, as graphite crucibles can reach high temperatures and require a support that can withstand these conditions without reacting or degrading. Common materials for crucible supports include ceramic and refractory metals. Secondly, the design of the crucible support should provide stability and proper alignment for the crucible. It should be able to securely hold the crucible in place to prevent any shifting or tipping during heating or pouring processes. Furthermore, the size and shape of the crucible support should be selected to accommodate the specific dimensions and weight of the graphite crucible. It is important to ensure that the support is strong enough to safely bear the weight of the crucible, avoiding any potential breakage or accidents. Lastly, cost-effectiveness and ease of maintenance should also be considered. The crucible support should be reasonably priced and should not require frequent replacement or extensive maintenance. Overall, when selecting a crucible support for graphite crucibles, one must consider compatibility, stability, dimensions, cost, and maintenance requirements.

Q: Can the medium frequency furnace be made of silicon carbide crucible?: With a graphite crucible or a tungsten crucible and tantalum crucible, these crucibles can be heated by sensing themselves, but the graphite may contaminate your glass melt, while the tungsten crucible and tantalum crucible are too expensive.

Q: What is the difference between the indirect method Zinc Oxide and the direct law Zinc Oxide?: Zinc Oxide direct process with a variety of zinc minerals or impurities as raw material;Indirect material method is obtained through Zinc Oxide metal zinc or zinc smelting.

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1. Manufacturer Overview

Location	Guangdong,China (Mainland)
Year Established	2010
Annual Output Value
Main Markets	North America South America Eastern Europe Southeast Asia Africa Oceania Mid East Eastern Asia Western Europe
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Export Percentage	61% - 70%
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Factory Size:	1,000-3,000 square meters
No. of Production Lines	Above 10
Contract Manufacturing	OEM Service Offered
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