High-Performance Industrial Alumina Ceramic Sleeve with Enhanced Thermal Conductivity

Overview of Alumina Ceramic Sleeve

Alumina ceramic Sleeve is a tubular component made of high-performance ceramic material. It is made of high-purity alumina as raw material and sintered at high temperatures. It has extremely high hardness, good wear resistance, corrosion resistance and electrical insulation. They are widely used in electronics, machinery, and the chemical industry, serving as insulating sleeves and wear-resistant parts, and are an essential material in modern industry.

Features of Alumina Ceramic Sleeve

Alumina ceramic sleeves and alumina sleeves are essentially products made from the same material, differing only in name. Both possess numerous outstanding properties. Firstly, the hardness of alumina ceramic sleeves is extremely high, second only to diamond, making them highly wear-resistant and stable under long-term friction conditions.

Moreover, alumina ceramic sleeves exhibit good chemical stability and strong corrosion resistance, capable of withstanding the erosion of various acid and alkali chemical media. They also offer excellent electrical insulation, making them reliable insulating components in high-voltage electrical environments.

Additionally, alumina ceramic sleeves have good thermal stability, maintaining size and performance stability across a wide temperature range, and are not easily deformed by thermal expansion and contraction. These characteristics make alumina ceramic sleeves widely used in fields such as electronics, machinery, and the chemical industry, for example, in the insulation protection of electronic components and as wear-resistant parts in mechanical transmission, providing vital material support for the development of modern industry.

Specifications Table of Alumina Ceramic Sleeve

Parameter	Specification
Material	High-purity alumina ceramic (Al₂O₃)
Purity	≥99.5%
Density	3.95-4.00 g/cm³
Hardness (Vickers)	≥1800 HV
Flexural Strength	≥350 MPa
Compressive Strength	≥2500 MPa
Dielectric Strength	≥15 kV/mm (at 25°C)
Dielectric Constant	8.5-9.5 (at 1 MHz, 25°C)
Volume Resistivity	≥10¹⁶ Ω·cm (at 25°C)
Thermal Conductivity	20-30 W/(m·K) (at 25°C)
Coefficient of Thermal Expansion	7.5-8.0 x 10⁻⁶/°C (20-1000°C)
Operating Temperature Range	-50°C to 1800°C (depending on grade)
Surface Finish	±0.1 mm (or as specified)
Tolerance	±0.05 mm (or as specified)
Corrosion Resistance	Excellent resistance to most acids and alkalis (except hydrofluoric acid)
Color	White (natural color of alumina ceramic)
Customization	Available (length, diameter, and other dimensions can be tailored to requirements)

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Applications of Alumina Ceramic Sleeve

IIn the electronics field, alumina ceramic Sleeves and alumina Sleeves are often used as insulating Sleeves to protect electronic components from the external environment while preventing current leakage and ensuring the stable operation of the circuit.

In mechanical manufacturing, alumina ceramic sleeves are utilized to produce wear-resistant parts such as bearing sleeves and sealing rings. Their high hardness and wear resistance enable them to operate stably in high-load, high-friction environments, reducing wear and replacement frequency.

In the chemical industry, the corrosion resistance of alumina ceramic sleeves makes them ideal as pipe lining materials, capable of withstanding the erosion of strong acids and alkalis, thereby extending equipment lifespan.

Additionally, alumina ceramic sleeves are employed in aerospace and automotive manufacturing as protective sleeves or thermal insulation materials for high-temperature components. Their good thermal stability and high-temperature resistance meet the stringent material requirements of these fields. In summary, alumina ceramic sleeves play a crucial role in many industries, providing vital support for modern industrial development with their diverse excellent properties.

Company Profile

Alumina Technology Co., Ltd.! We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Alumina Ceramic Sleeve

Q1: What are the advantages of alumina ceramic sleeves in lithium battery material delivery systems?

In recent years, 95% of alumina ceramic sleeves have been widely used in lithium battery material delivery systems. This is primarily due to their superior purity of inner and outer tube materials, higher wear resistance, corrosion resistance, impact resistance, and high-temperature resistance, as well as smaller pipeline flatness. These properties effectively enhance the efficiency and safety of lithium battery material delivery and extend the service life of the delivery system.

Q2: How to choose a suitable alumina ceramic sleeve?

Consider the working temperature: Select alumina ceramic sleeves with appropriate purity and specifications based on the temperature conditions in actual applications to meet the requirements for high-temperature environments.

Evaluate corrosion resistance requirements: For corrosive substances in the conveyed medium and working environment, choose alumina ceramic sleeves with corresponding corrosion resistance to ensure their stability and reliability in corrosive environments.

Determine the size specifications: Based on the size and design requirements of the pipeline system, select the appropriate outer diameter, inner diameter, length, and other size specifications to ensure good matching and convenient installation between the ceramic sleeve and the pipeline.

Pay attention to product quality: Choose alumina ceramic sleeves produced by reputable and reliable manufacturers to ensure that the strength, hardness, wear resistance, and other properties of the products meet standard requirements. Pay attention to the surface quality, dimensional accuracy, and defects of the products.

Q3: What is the service life of alumina ceramic sleeves?

Under normal use and maintenance, alumina ceramic sleeves have a long service life, generally lasting several years or even longer. This is mainly due to their high hardness, wear resistance, corrosion resistance, and high-temperature resistance.

Q4: What is the cost-effectiveness of using alumina ceramic sleeves?

Although the initial investment cost of alumina ceramic sleeves is relatively high, their long service life, low maintenance cost, and high reliability provide significant cost benefits in the long run. They reduce equipment downtime and maintenance work, improve production efficiency, and minimize safety risks and production losses caused by equipment failure. Therefore, they are widely used in many industrial fields.

Q5: How high a temperature can alumina ceramic sleeves withstand?

Alumina ceramic sleeves have excellent high-temperature resistance and can work stably for long periods in high-temperature environments. Generally, they can withstand temperatures up to 1650℃ in oxidizing or reducing atmospheres and can even withstand high temperatures of 2000℃ in a vacuum environment.