Alumina ceramic tube sleeve / hollow tube
Alias: Wear-resistant and high-temperature resistant ceramic protective tube / Ceramic lined tube / Insulated precision ceramic bushing
Description：
Alumina (Al2O3) ceramics are widely used in various industrial environments and industries due to their excellent physical, chemical, and electrical properties, especially in situations where high temperature resistance, corrosion resistance, high insulation, and high mechanical strength are required.
Features:
Alumina ceramic pipe sleeve / hollow tube, also known as insulated precision ceramic bushing, is a high-performance industrial ceramic material, it is compact in design, mainly used in smaller structures and applications, not suitable for large ceramic tube working environment.
These tube sleeves are designed with a variety of structural forms designed to adapt to different application environments and functional needs. Its key features include high density, excellent wear and high temperature resistance, and excellent electrical insulation properties.
The structure of the alumina ceramic tube sleeve / hollow tube allows it to be used as a protective layer or isolation layer in various equipment. For example, they are used in the electronics industry to protect sensitive wires or components from the outside environment, or in the chemical industry as part of reaction tubes to handle chemicals without erosion. The non-conductive nature of alumina also makes these tube sleeves suitable for electrically insulated applications.
— High-purity alumina materials
The main material for manufacturing is 96% high-purity alumina, ensuring its excellent mechanical properties and wear resistance.
— High hardness and durability
The density of alumina ceramics is up to 3.85 g/cm³, ensuring their stability and durability under high loads. At the same time, Vickers hardness reaches 15.7 GPA, which allows it to maintain good mechanical properties in extreme environments.
— Zero water absorption and breathability
Alumina ceramic hollow tubes have 0% water absorption and 0 air permeability, which means they perform well in wet or airtight environments.
— Excellent electrical insulation
It has a high breakdown strength (12 KV/mm) and is ideal for use as a sheath for electrical insulation.
— High Temperature Resistance
It can withstand temperatures up to 1600°C, making it suitable for high-temperature environments.
— Good mechanical strength and toughness
The flexural strength reaches 300 MPa, the compressive strength is up to 2000 MPa, and it has moderate fracture toughness (3.5 MPa· m1/2).
— Thermal stability and thermal shock resistance
It has a low coefficient of thermal expansion (6.5-7.5 x 10-6/℃) and high thermal conductivity (25 W/(m·K)), and can withstand thermal shock up to ΔT200℃.
Applications:
1. Electronics industry
Alumina ceramic tube sleeves first played an important role in the electronics industry. Due to its non-conductive nature, it can be used as a protective layer for electrical wires or sensitive electronic components, preventing electrical interference and environmental factors. Additionally, it has excellent thermal shock resistance and can withstand temperature differences of up to 200℃, making it excellent in high-temperature operating environments, such as up to 1650℃.
2. Electrical industry
It acts as a cable ceramic sheath and electrical insulator, protecting the wire from mechanical damage and preventing electrical faults.
3. Mechanical and structural applications
Used in mechanical installations, such as bearing sleeves and guide components, to provide sliding and structural support.
4. Heat treatment and within the furnace application
Protective sleeves used in heat treatment equipment to prevent direct exposure of sensitive components to extreme environments.
5. Chemical industry
The chemical industry is also an important application area for alumina ceramic pipe sleeves. Here, they are often used as part of chemical reaction tubes to treat aggressive chemicals. Its compressive strength is up to 2000 MPa and flexural strength is 330 MPa, ensuring structural integrity and durability during chemical reactions. Additionally, the chemical resistance of alumina ceramics allows them to withstand corrosion from multiple chemical media, ensuring the purity and safety of the reaction.
6. Scientific research and laboratory applications
In chemical and physical experiments, as a container or pipe resistant to corrosion and high temperatures.
7. Aviation and automotive industry
Used for sensor protection, especially in environments where high temperature resistance and electrical insulation are required.
Alumina ceramic tube sleeves / hollow tubes as protective layers or isolation layers, they have become an integral part of many high-tech and industrial sectors. From high-temperature operations to precision electrical insulation, this material's high-purity alumina base and precision manufacturing process allow it to excel in extreme environments. Whether used for simple structural support or complex electrical insulation applications, Alumina Ceramic Pipe Sleeves / Hollow Tubes offer reliable performance and long-lasting durability.
In the field of precision ceramic processing and customization, Fudong Machinery is committed to the production of various high-performance ceramic parts, including zirconia ceramics, silicon nitride, aluminum nitride and other products. These ceramic parts have excellent thermal stability, electrical insulation, high temperature stability and wear resistance, and are widely used in key fields such as aerospace, electronics, machinery, military industry, and automotive.
With its excellent performance and reliability, our products provide customers with key support and guarantees, helping them improve production efficiency and optimize product performance.
