30 oz Kerr Graphite Crucible

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 50 Pieces pc

Supply Capability:: 10000 Pieces per Month pc/month

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Detailed Product Description

Graphite Crucible with 30 oz/1kg melting capacity which could fit Kerr electro melt oven to melting gold, silver, copper.,etc.

Graphite Crucible 1 Kilo, Fits Kerr Electric Auto Furnace

Item Description

Graphite Crucible 1 Kilo, Fits Electric Auto Furnace.
This is a new Graphite Crucible designed for the Hand held Melting Furnace.
Can be used for all metal types, like gold ,silver,copper etc.
This model has the groove in the top for the wire type crucible tongs.
Measurements :
Top outside diameter (mm) : 57mm
Top inside diameter (mm) : 43 mm
Height with the top (mm) : 125.9mm

Q: Are there any safety precautions to take when using a graphite crucible?: Yes, there are several safety precautions to take when using a graphite crucible. Firstly, it is important to always wear proper personal protective equipment (PPE) such as heat-resistant gloves, safety goggles, and a lab coat to protect against heat and potential splashes. Additionally, one should ensure that the crucible is not cracked or damaged before use, as this may lead to thermal shock and breakage during heating. When handling or transporting a hot crucible, using appropriate tongs or tools is crucial to avoid burns or accidents. It is also important to be aware of the proper temperature range for the crucible and avoid exceeding its maximum temperature limit, as this can cause it to degrade or break. Finally, always allow the crucible to cool down sufficiently before handling it after use to prevent burns.

Q: How long can a graphite crucible last for a long time?: The special thermal shock resistance, thermal expansion of graphite is anisotropic, and the macro expansion coefficient is small, the temperature change under the condition that the volume change of graphite is not large, coupled with its good thermal conductivity, good thermal shock resistance and graphite.

Q: What's the difference between crucible furnace and non crucible furnace in die casting industry?: The stove is not without crucible furnace crucible said above, the molten pool is built by the whole plate, high aluminum refractory castable, heating with resistance wire, silicon carbide, top mounted combustion heating machine, dipping type silicon carbide rod. The furnace has a life expectancy of about 3 or 5 years.

Q: Are graphite crucibles suitable for vacuum induction melting?: Yes, graphite crucibles are suitable for vacuum induction melting. Graphite has excellent thermal conductivity and high melting point, making it ideal for withstanding the high temperatures and intense heat generated during the melting process. Furthermore, graphite has low reactivity with most metals, ensuring minimal contamination during the melting process.

Q: How do you determine the appropriate crucible stirring mechanism for a specific application?: To determine the appropriate crucible stirring mechanism for a specific application, several factors must be taken into account. Firstly, it is necessary to understand the requirements of the application, including the type of material to be stirred, the desired mixing intensity, and any specific parameters that must be maintained during the stirring process. Next, the available stirring mechanisms and their capabilities should be evaluated. There are different options, such as magnetic stirrers, mechanical stirrers, and gas bubbling stirrers. Each mechanism has its own advantages and limitations, so it is important to assess how well they align with the application requirements. Consideration should also be given to the properties of the material being stirred. Some materials may be sensitive to mechanical stress or temperature changes, making gentle magnetic stirring more suitable. Others may require more vigorous mixing, which can be achieved with mechanical or gas bubbling stirrers. In addition, the compatibility of the stirring mechanism with the crucible material should be assessed. Certain materials may react with specific stirring mechanisms, leading to contamination or degradation. It is important to ensure that the chosen stirring mechanism is compatible with the crucible material to avoid any adverse effects. Furthermore, the scalability and ease of use of the stirring mechanism should be considered. If the application requires large-scale production or frequent stirring, choosing a mechanism that is easily scalable and user-friendly can be beneficial. Finally, it is advisable to consult experts or conduct experiments to validate the suitability of the chosen stirring mechanism. This can involve performing small-scale trials or seeking advice from professionals familiar with the specific application or material being stirred. In conclusion, determining the appropriate crucible stirring mechanism requires careful consideration of the application requirements, material properties, compatibility, scalability, and expert advice.

Q: What are the different methods of monitoring the melting process in a graphite crucible?: There are various techniques available to monitor the melting process in a graphite crucible, which can offer valuable insights into the temperature, consistency, and progress of the process. 1. Visual Inspection: An uncomplicated method involves visually examining the melting process. This entails observing the color, consistency, and movement of the materials as they melt. For instance, if the materials transform into a liquid state and flow smoothly, it indicates that the melting process is proceeding as anticipated. 2. Thermocouples: Widely utilized for temperature measurement in industrial processes, thermocouples are employed for melting in graphite crucibles. These devices consist of two dissimilar metals joined together at one end. By measuring the voltage difference between the two ends, the temperature can be determined. Accurate temperature monitoring can be achieved by inserting thermocouples into or near the crucible. 3. Infrared Pyrometers: Non-contact temperature measurement devices known as infrared pyrometers utilize infrared radiation to determine an object's temperature. They can be utilized to monitor the temperature of the graphite crucible during the melting process without physical contact. Infrared pyrometers offer swift and precise temperature readings. 4. Optical Emission Spectroscopy (OES): OES is a technique that analyzes the light emitted by the melting materials to ascertain their composition and temperature. By analyzing the spectral lines and intensities of the emitted light, OES can provide valuable information about the melting process, including temperature and the presence of impurities or alloying elements. 5. Pressure Measurement: Monitoring the pressure within the graphite crucible can serve as an indicator of the melting process. As the materials melt and vaporize, the pressure inside the crucible may increase. Pressure sensors can be utilized to measure pressure changes during the melting process, offering insight into the progress of the melting and the behavior of the materials. These techniques can be employed individually or in combination to monitor the melting process in a graphite crucible. By utilizing one or more of these methods, operators can ensure that the melting process is proceeding as intended and make any necessary adjustments or interventions to maintain optimal conditions.

Q: Are graphite crucibles suitable for melting superalloys?: No, graphite crucibles are not suitable for melting superalloys.

Q: What are the different methods of preventing cracks in a graphite crucible?: To prevent cracks in a graphite crucible, there are several effective methods that can be utilized: 1. Employing preheating: Prior to use, it is beneficial to preheat the graphite crucible. This can be achieved by gradually increasing the temperature to the desired operating level. This gradual heating allows for uniform expansion of the graphite, thus reducing the possibility of thermal shock and subsequent cracking. 2. Implementing gradual cooling: After use, it is crucial to cool the crucible in a gradual manner. Abrupt changes in temperature can result in thermal stress and ultimately lead to cracks. By allowing the crucible to cool slowly, the risk of such stress is minimized. 3. Avoiding sudden temperature fluctuations: It is imperative to utilize the graphite crucible in a controlled manner, avoiding rapid temperature changes. Swift heating or cooling can induce thermal shock and increase the likelihood of cracking. Thus, maintaining a consistent temperature during both the heating and cooling processes is of utmost importance. 4. Exercising proper handling techniques: The careful handling of the crucible is vital in the prevention of cracks. Any instances of dropping or forcefully impacting the crucible against hard surfaces should be avoided, as this can result in physical damage and weaken the graphite structure. 5. Applying protective coatings: An additional layer of insulation and prevention of direct contact between the molten material and the graphite can be achieved by employing a protective coating on the inner surface of the crucible. This coating serves to reduce chemical reactions and thermal stress, thereby diminishing the risk of cracks. 6. Engaging in regular maintenance and inspection: Consistently inspecting the crucible for any indications of wear, damage, or cracks is indispensable. Identifying potential issues at an early stage can prevent further harm and ensure the longevity of the crucible. Through the implementation of these methods, the risk of cracks in a graphite crucible can be minimized. This ensures the crucible's durability and effectiveness in various high-temperature applications.

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: How does the surface tension of graphite affect crucible performance?: The surface tension of graphite plays a crucial role in the performance of a crucible. Graphite has a relatively low surface tension, which allows it to easily wet and adhere to the inner surface of the crucible. This strong adhesion prevents the graphite from peeling or cracking under the extreme temperatures and thermal shocks experienced during the melting or casting process. Additionally, the low surface tension of graphite promotes efficient heat transfer between the crucible and the material being melted, ensuring uniform heating and reducing the risk of hot spots or thermal gradients. Overall, the surface tension of graphite greatly influences the durability and thermal efficiency of a crucible, making it an essential factor in its performance.

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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
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