Graphite Crucible Sizes for Galloni/VCM

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 50 Sets set

Supply Capability:: 10000 Sets per Month set/month

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Detailed Product Description

Graphite casting crucible made of high pure graphite material, could be used with Galloni / VCM casting machine.

Graphite crucible for Galloni/VCM

Specification:

Graphite crucible: OD 78 * H 120 MM,

Graphite stopper: OD 19* L200 MM

Features:

High purity, fine grain, good performance of electrical conductivity and thermal conductivity, high density, good corrosion resistance, thermal shock resistance, thermal stability, high mechanical strength, low permeability, and good oxidation resistance. The raw material is capable of producing various semiconductor molds and radio tube.

Graphite Materials index:

Content: 99.99% graphite

Density: 1.87g/cm3

Compressive strength: 65mPa

Shore hardness: 55

Porosity: 15%

Q: What are the properties of diamond, graphite and charcoal? What is the relationship between the nature of the material and its use?: Because of the refraction and scattering of light by diamond, it can be used as decoration. Graphite is soft to be used as pencil core;

Q: How is a graphite crucible cleaned after use?: To clean a graphite crucible, one must follow a series of simple steps. Firstly, it is imperative to allow the crucible to cool down entirely before attempting to clean it. Once cooled, one can gently remove any remaining solid residues using a non-metallic tool such as a plastic scraper or a wooden stick. It is crucial to avoid metal tools as they have the potential to scratch or damage the graphite surface. Once the solid residues have been eliminated, the crucible can be washed utilizing warm water and a mild detergent. It is advisable to employ a soft sponge or cloth to gently scrub the interior and exterior surfaces of the crucible. This process will aid in the removal of any remaining impurities or contaminants. After the crucible has been thoroughly cleaned, it should be rinsed with clean water to eliminate any detergent residue. It is of utmost importance to ensure that the crucible is rinsed meticulously in order to prevent any chemicals from contaminating future experiments or processes. Following the rinsing, it is essential to dry the crucible entirely before storing or reusing it. It is recommended to air-dry the crucible in a well-ventilated area or employ a clean, lint-free cloth to wipe it dry. Ensuring the crucible is completely dry is of great importance as it prevents moisture from causing corrosion or other forms of damage. In summary, the process of cleaning a graphite crucible involves scraping off solid residues, washing with warm water and mild detergent, thorough rinsing, and complete drying before storing or reusing. By adhering to these steps, one can effectively clean and maintain the crucible for future use.

Q: Can graphite crucibles be used for eutectic growth?: Yes, graphite crucibles can be used for eutectic growth. Eutectic growth refers to the process of solidification of a eutectic alloy, which is a mixture of two or more metals or elements that have a specific composition and temperature at which they solidify together. Graphite crucibles are commonly used in high-temperature applications and have excellent thermal conductivity and resistance to chemical reactions. These properties make them suitable for holding and heating eutectic alloys to the required temperature for controlled solidification. Additionally, graphite crucibles have good thermal stability, allowing them to withstand the thermal cycling involved in the eutectic growth process. Therefore, graphite crucibles are a popular choice for eutectic growth experiments or industrial applications that require the controlled solidification of eutectic alloys.

Q: What is graphite?: Graphite is a crystalline mineral of carbonaceous elements. Its crystalline framework is hexagonal layered structure. The distance between each network layer is 3.40, and the distance between the carbon atoms in the same network layer is 1.42A.

Q: Are graphite crucibles suitable for melting alloys with low melting points?: Yes, graphite crucibles are suitable for melting alloys with low melting points. Graphite has a high melting point and excellent thermal conductivity, allowing it to withstand high temperatures and efficiently transfer heat to the alloy. Additionally, graphite is chemically inert and does not react with most metals, making it an ideal choice for melting low melting point alloys.

Q: How do you ensure proper sealing of a graphite crucible?: To ensure proper sealing of a graphite crucible, it is important to follow these steps: 1. Clean the crucible: Thoroughly clean the graphite crucible using a brush or cloth to remove any debris or impurities that could affect the seal. 2. Inspect the crucible: Carefully examine the crucible for any cracks, chips, or other damages that could compromise the seal. If any defects are found, it is best to replace the crucible. 3. Apply a sealant: Use a suitable sealant, such as graphite powder or a high-temperature adhesive, to create a tight seal between the lid and the crucible. Apply the sealant evenly along the contact surface to ensure a proper bond. 4. Secure the lid: Place the lid on the crucible and make sure it aligns correctly. Apply gentle pressure to ensure a tight fit. If the crucible has clamps or screws, tighten them according to the manufacturer's instructions. 5. Preheat the crucible: Before using the crucible, it is essential to preheat it gradually to allow the sealant to cure properly. Follow the recommended preheating process provided by the crucible manufacturer. By following these steps, you can ensure the proper sealing of a graphite crucible, minimizing the risk of any leaks or contamination during its use.

Q: Can graphite crucibles be used for rapid thermal cycling?: Indeed, rapid thermal cycling can be facilitated by employing graphite crucibles. Due to its exceptional thermal conductivity and remarkable heat resistance, graphite proves to be a fitting material for accommodating swift temperature fluctuations. Consequently, graphite crucibles possess the durability necessary to endure the expeditious heating and cooling essential in thermal cycling procedures. Furthermore, graphite boasts a low coefficient of thermal expansion, ensuring minimal alterations in dimensions amidst temperature variations, thus rendering it an optimal choice for repetitive thermal cycling.

Q: Does the graphite pan need preheating?: 5. the use of coke block size is less than the furnace wall and the crucible spacing should be added since the 5 fall, not ramming.6. crucible before use for 1-1.5 hours from the gas warm up to 200 degrees Celsius (especially in the initial drying must be in a continuous turning of the crucible and the crucible, slowly warming up and down at the same time and shall not exceed 100 degrees, to be slightly cooler, water vapor discharged after 1 hours) and then continue to heat up. The temperature to about 800 DEG C, baking time not too long. (such as spalling, improper preheating burst, not a quality problem, if the company is not responsible for the return. 7.) must keep the inside wall intact, to avoid bias by.8. flame burner flame heating, don't direct injection in the crucible, should be sprayed on the seat and into the crucible.9. proposed to use.10. into the metal crucible clamp corresponding to the bottom and then insert the scrap metal ingot, but not too close to the edge and, in order to avoid fragmentation through the use of a.11. crucible crucible best due to the expansion of metal Continuous melting, reduce the interval time.12. if intermediate stop using the remaining liquid should be dry, in order to avoid cracking caused by the continued use of.13. in the smelting process, must strictly control the amount of refining agent, added in excess, will reduce the service life of the crucible. And often clean ballast junction, guide and capacity to change the face of the impact of free crucible at the same time. Ballast too thick will cause the upper expansion.

Q: Are graphite crucibles suitable for use in a vacuum environment?: Yes, graphite crucibles are suitable for use in a vacuum environment. Graphite has a high melting point and excellent thermal conductivity, making it an ideal material for containing and heating materials in a vacuum. Additionally, graphite is chemically inert and has low outgassing properties, which ensures minimal contamination or reaction with the vacuum environment.

Q: Can a graphite crucible be used for ceramic glazing?: No, a graphite crucible is not suitable for ceramic glazing. Ceramic glazes require high firing temperatures that can cause the graphite crucible to degrade or react with the glaze materials, leading to contamination and poor results. It is recommended to use a crucible made from materials like alumina or porcelain for ceramic glazing.

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1. Manufacturer Overview

Location	Guangdong,China (Mainland)
Year Established	2010
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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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