Thermal Elements
silicon carbide(SiC) heating element
Item Number : KT-SH
Price varies based on specs and customizations
- Bulk Density
- 2.5 g/cm3
- Porosity
- 23%
- Thermal Conductivity
- 14-19 W/m·℃ (1000℃)
- Rupture Strength
- 50Mpa(25℃)
- Specific Heat
- 1.0 kj/kg·℃(25~1300℃)
- Coefficient Of Thermal Expansion
- 4.5×10-⁶
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Introduction
Silicon Carbide (SiC) Heating Elements are high-temperature ceramic devices used in electric furnaces, known for their high electrical conductivity and resistance to extreme temperatures. These elements, made from silicon and carbon, are formed through a recrystallization process at over 2150°C, offering long service life and energy efficiency. SiC heaters are versatile, available in various configurations, and suitable for applications ranging from 600°C to 1600°C, making them ideal for industries such as metallurgy, ceramics, and semiconductor manufacturing.
Application
SiC heating element has been widely used in machinery, metallurgy, light chemicals, ceramics, semiconductors, analytical tests, scientific research and other fields, and has become the electric heating element of various electric furnaces and kilns Tunnel kiln, roller kiln, glass kiln, vacuum furnace, muffle furnace, smelting furnace and all kinds of heating equipment.Here are the main application areas of Silicon Carbide heating elements:
- Metallurgy: SiC heating elements are crucial in the production and processing of metals, where high temperatures are required for smelting and refining processes.
- Ceramics: In the ceramics industry, these elements are used for firing and sintering processes, ensuring uniform heating and high-quality end products.
- Glass Manufacturing: SiC heating elements play a vital role in the melting and shaping of glass, where consistent high temperatures are necessary.
- Chemical Processing: They are used in chemical reactors and processing units that require controlled high-temperature environments.
- Laboratory Furnaces: In scientific research and analysis testing, SiC elements are integral to laboratory furnaces used for various high-temperature experiments and tests.
- Semiconductor Fabrication: The precise temperature control offered by SiC heating elements is essential in the production of semiconductors and other electronic components.
- Environmental Testing: These elements are used in environmental testing chambers that simulate extreme temperature conditions for product durability testing.
- Food Processing: In the food industry, SiC heating elements are used in ovens and other equipment that require high-temperature processing.
Detail&Parts
Advantages
Silicon Carbide (SiC) heating elements offer numerous advantages that make them a superior choice for various heating applications. These elements are made from a hard ceramic compound of silicon and carbon, known as carborundum, which provides high electrical conductivity and exceptional durability. Here are some of the key benefits of using SiC heating elements:
- High-Temperature Performance: SiC heating elements operate efficiently at temperatures ranging from 600°C to 1600°C, making them ideal for high-temperature furnaces and processes.
- Energy Efficiency: These elements have a small hot-end resistance, which leads to energy savings by reducing wasted heat and improving the overall efficiency of the heating system.
- Long Service Life: Due to their robust ceramic construction, SiC heating elements have a longer lifespan compared to other types of heating elements, especially in corrosive environments.
- Precise Temperature Control: The ability to accurately control and maintain temperature is crucial in many industrial processes. SiC elements provide a more accurate and controllable heat, enhancing the quality and consistency of the products.
- Safety and Environmental Benefits: Using SiC heating elements eliminates the need for flue gases, improving the safety and environmental impact of the heating process. This also contributes to a more pleasant working environment.
- Versatility in Design: Available in eight different basic configurations, SiC heating elements can be tailored to specific applications, extending their life and effectiveness, particularly in challenging environments.
- Cost-Effectiveness: Although initially more expensive than some other heating elements like MoSi2, SiC elements offer long-term savings through their energy efficiency and extended lifespan, reducing overall operational costs.
- Enhanced Power Radiation: SiC heating elements can radiate higher power, which is beneficial for processes that require rapid heating or high-temperature stability.
Features
The Continuous Working Electric Heating Pyrolysis Furnace is a sophisticated piece of equipment designed for continuous pyrolysis processes. This furnace offers a range of features that not only enhance its functionality but also ensure safety, efficiency, and longevity in operation. Key features include extended working life, internal rotating for constant operation, and advanced control systems for safe and efficient management of pyrolysis processes.
- Extended Working Life: The furnace utilizes indirect hot air heating for the reactors, which significantly reduces damage and prolongs the equipment's lifespan.
- Internal Rotating for Optimum Constant Operation: Unlike external rotating systems that require frequent changes to seal materials, this furnace incorporates an internal rotating technique.
- Advanced Control and Monitoring Systems: The furnace is equipped with integrated control loops that allow for real-time monitoring of critical parameters. Additionally, features like improved burner management and automated decoking further contribute to the furnace's reliability and safety.
Characteristics parameters
Physical Properties
| Bulk Density | 2.5g/cm3 |
| Porosity | 23% |
| Thermal Conductivity | 14-19W/m·℃ (1000℃) |
| Rupture Strength | 50Mpa(25℃) |
| Specific Heat | 1.0kj/kg·℃ (25~1300℃) |
| Coefficient Of Thermal Expansion | 4.5×10-⁶ |
Chemistry Properties
Silicon carbide heating element has good chemical stability and strong acid resistance. Under high temperature, alkaline substances can erode it.
Long term use of silicon carbide elements above 1000 ℃ can have the following effects with oxygen and water vapor:
①Sic+2O2→Sio2+CO2 ②Sic+4H2O=Sio2+4H2+CO2
As a result, the SiO2 content in the element gradually increases, and the resistance slowly increases, so as to age. If there is too much water vapor, it will promote the oxidation of SiC, and the H2 generated by the reaction of formula ② will combine with the O2 in the air to react with H2O to generate a vicious cycle. Reduce component life. hydrogen(H2) can reduce the mechanical strength of components. Nitrogen (N2) below 1200 ℃ can prevent the oxidation of SiC above 1350 ℃ from reacting with SiC, so that SiC can decompose chlorine (Cl2) and SiC can be completely decomposed.
How to mark the model of Silicon carbide (SiC) heating element
- OD: Outer diameter
- HZ: Hot zone length
- CZ: Cold zone length
- OL: Overall length
For example: SCR type, OD = 8 mm, HZ = 100 mm, CZ = 130 mm,
OL = 230 mm, Resistance 4.46 ohms
You can specify its model as: 8*100*230/ 4.46 ohms
SiC heating element available range:
| OD | HZ | CZ | OL | Resistance |
| 8mm | 100-300mm | 60-200mm | 240-700mm | 2.1-8.6 ohms |
| 12mm | 100-400mm | 100-350mm | 300-1100mm | 0.8-5.8 ohms |
| 14mm | 100-500mm | 150-350mm | 400-1200 | 0.7-5.6 ohms |
| 16mm | 200-600mm | 200-350mm | 600-1300 | 0.7-4.4 ohms |
| 18mm | 200-800mm | 200-400mm | 600-1600 | 0.7-5.8 ohms |
| 20mm | 200-800mm | 250-600mm | 700-2000mm | 0.6-6.0 ohms |
| 25mm | 200-1200mm | 250-700mm | 700-2600mm | 0.4-5.0 ohms |
| 30mm | 300-2000mm | 250-800mm | 800-3600mm | 0.4-4.0 ohms |
| 35mm | 400-2000mm | 250-800mm | 900-3600mm | 0.5-3.6 ohms |
| 40mm | 500-2700mm | 250-800mm | 1000-4300mm | 0.5-3.4 ohms |
| 45mm | 500-3000mm | 250-750mm | 1000-4500mm | 0.3-3.0 ohms |
| 50mm | 600-2500mm | 300-750mm | 1200-4000mm | 0.3-2.5 ohms |
| 54mm | 600-2500mm | 300-750mm | 1200-4000mm | 0.3-3.0 ohms |
Installation Precautions
Click here for notes on installing silicon carbide rods.
Warnings
Operator safety is the top important issue! Please operate the equipment with cautions. Working with inflammable& explosive or toxic gases is very dangerous, operators must take all necessary precautions before starting the equipment. Working with positive pressure inside the reactors or chambers is dangerous, operator must fellow the safety procedures strictly. Extra caution must also be taken when operating with air-reactive materials, especially under vacuum. A leak can draw air into the apparatus and cause a violent reaction to occur.
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4.9
out of
5
Speedy delivery, excellent quality, and top-notch customer service. Thank you!
4.8
out of
5
The SiC heating element is a game-changer for our lab. It's efficient, durable, and has significantly improved our productivity.
4.7
out of
5
I'm impressed with the performance and longevity of this heating element. It's a reliable workhorse in our lab.
5.0
out of
5
Exceptional product! The SiC heating element delivers consistent results and has exceeded our expectations.
4.9
out of
5
Great value for money. The heating element is well-made and has held up well in our demanding lab environment.
4.8
out of
5
The SiC heating element is a reliable and efficient addition to our lab equipment. Highly recommended!
5.0
out of
5
Outstanding product! The heating element's durability and performance are unmatched. We're very satisfied with our purchase.
4.9
out of
5
The SiC heating element has proven to be an excellent investment. It's a high-quality product that delivers exceptional results.
4.7
out of
5
This heating element is a solid performer. It's easy to install and maintain, and it has met all our requirements.
5.0
out of
5
We're thrilled with the SiC heating element. It has significantly improved the efficiency of our lab processes.
4.8
out of
5
The heating element arrived promptly and was exactly as described. It's a great addition to our lab setup.
4.9
out of
5
The SiC heating element is a reliable workhorse. It's been operating flawlessly since we installed it.
4.7
out of
5
We're very satisfied with the performance of the heating element. It's a durable and efficient piece of equipment.
5.0
out of
5
The SiC heating element has exceeded our expectations. It's a top-quality product that has enhanced our lab's capabilities.
4.9
out of
5
We highly recommend the SiC heating element. It's a valuable addition to any lab.
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