Aluminum oxide ceramic ring ceramic disc

Aluminum oxide ceramic rings and ceramic discs are special ceramic components made from high-purity aluminum oxide (Al ₂ O3) raw materials, which are precision formed and sintered at high temperatures above 1700 ℃. They combine high hardness, high temperature resistance, corrosion resistance, excellent electrical insulation, and outstanding wear resistance, and are essential key basic materials in high-end fields such as electronics, machinery, chemical engineering, and medical care, providing reliable guarantees for the stable operation of equipment under extreme working conditions.

Product Core Q&A (FAQ)
Q1: What are the main performance advantages of alumina ceramic rings/discs?
A1: The core advantage lies in its excellent comprehensive performance:
Ultra high hardness and wear resistance: The Mohs hardness reaches level 9 (second only to diamond), the Rockwell hardness is ≥ HRA85, and the wear resistance is more than 260 times that of manganese steel, which can effectively resist material erosion and wear.
Excellent high temperature resistance: The melting point can reach 2050 ℃, and the long-term working temperature can reach 1600-1800 ℃. It can still maintain high strength and dimensional stability at high temperatures.
Excellent electrical insulation: With a resistivity greater than 10 Ω· cm at room temperature, it is an ideal high-voltage insulation material suitable for high-frequency circuits and high-voltage environments.
Excellent chemical corrosion resistance: It has strong resistance to acids, alkalis, salts, and various organic solvents, and is stable in the pH range of 3-12.
Good biocompatibility: Extremely stable chemical properties, non-toxic and without side effects, can be used in medical fields such as human implants.
Q2: What specifications and sizes can these products be customized?
A2: We provide comprehensive customized services to meet your personalized needs:
Size customization: We can provide various specifications from micro (such as 1mm diameter discs) to large (such as rings with a diameter exceeding 500mm), with thicknesses ranging from 0.5mm to 100mm and an accuracy of ± 0.005mm.
Shape customization: In addition to standard circular and round shapes, special structures such as irregular parts, holes/grooves/threads can also be customized according to drawings.
Purity customization: We provide products with different alumina contents such as 95%, 99%, 99.5%, 99.7%, etc. to meet different performance requirements.
Surface processing: Surface treatments such as grinding, polishing, and laser processing can be provided, with a minimum surface roughness of Ra ≤ 0.02 μ m.
Q3: In which fields are alumina ceramic rings/discs mainly used?
A3: It has a wide range of application fields, mainly including:
Electronic and electrical: integrated circuit substrates, capacitors, insulation sleeves, high-voltage switch casings, circuit substrates.
Mechanical manufacturing: bearings, shaft sleeves, mechanical sealing rings, textile guide hooks, sandblasting nozzles, wear-resistant lining plates.
Chemical metallurgy: reactor lining, pipeline lining, catalyst carrier, thermocouple protection tube, pump valve components.
Electric power mines: coal powder conveying pipeline lining, powder selection machine blades, dust collector flue, coal mill lining plate.
Biomedical: artificial joints, dental restorative materials, biochemical separation membranes.

Addressing your core needs
Our alumina ceramic rings and discs are designed to solve the challenges that traditional metal or plastic materials cannot handle under extreme working conditions. Whether facing the severe wear and tear of high-speed materials, continuous testing in high-temperature environments, corrosion threats from strong acids and alkalis, or strict requirements for absolute isolation of electrical signals, our products can provide you with durable, stable, and reliable solutions with their excellent comprehensive performance, significantly extending equipment life, reducing maintenance costs, and ensuring production continuity and safety.

Core strengths
Comprehensive performance, no shortcomings “all-around player”: not a single outstanding performance, but achieving extremely high levels in multiple dimensions such as hardness, temperature resistance, insulation, corrosion resistance, etc., able to cope with complex and changing working conditions challenges.
Long lifespan and significant economic benefits: Its excellent wear resistance extends its service life far beyond traditional materials, and can extend equipment life by more than 10 times under the same working conditions, greatly reducing the frequency of downtime maintenance and component replacement.
Precise and reliable, ensuring equipment accuracy: Through isostatic pressing and precision CNC machining, the dimensional accuracy and surface smoothness of the product are ensured, meeting the strict requirements of the semiconductor, precision instrument and other industries for components.
Pure material, safe and reliable application: High purity raw materials and dense sintered structure ensure that the product exhibits extremely low reactivity in chemical and biological environments, ensuring process purity and biological safety.
applied value
In the field of electronics: as a circuit substrate and insulation component, its high thermal conductivity and excellent insulation ensure the heat dissipation efficiency and signal stability of electronic components at high power and high frequency, improving equipment performance.
In the field of machinery: as a wear-resistant component, its ultra-high hardness and low friction coefficient can effectively reduce equipment wear, maintain mechanical accuracy, and reduce energy consumption, especially suitable for high-speed operating equipment such as textiles and printing.
In the field of chemical engineering, as an anti-corrosion lining and structural component, its chemical inertness can protect the equipment body from corrosion, avoid leakage risks caused by corrosion, and ensure production safety and environmental compliance.
In the field of mining power: as a lining for pipelines and equipment, it can effectively resist the high-speed erosion of hard particles such as coal powder and slag, solve the problem of “wear through”, and ensure the long-term stable operation of the conveying system.

Customer Application Cases
Case 1: Solving the problem of frequent wear and tear of coal powder pipelines in thermal power plants
Customer background: In a large thermal power plant, the elbow of the coal powder conveying pipeline is subject to long-term erosion by high-speed coal powder particles. The originally used manganese steel lining plate experiences wear through and leakage on average every 3 months, resulting in frequent shutdowns for maintenance, seriously affecting power generation efficiency and posing safety hazards.
Our solution: We customized a 92% alumina wear-resistant ceramic sheet with a thickness of 20mm for the customer, and used a high-temperature resistant inorganic adhesive (which can withstand 350 ℃ for a long time) to stick it to the inner wall of the pipeline elbow. The ceramic tiles are installed in a staggered arrangement to ensure overall wear resistance.
Application effect: After the renovation, this section of pipeline has been running continuously and stably for more than 2 years without any wear or leakage during this period. Customer feedback: The equipment maintenance cycle has been significantly extended, maintenance costs have been reduced by over 80%, and production efficiency and safety have been significantly improved.
Case 2: Improving the Precision Transmission Stability of Semiconductor Equipment
Customer background: A semiconductor equipment manufacturer whose precision drive system requires extremely high dimensional accuracy and wear resistance for the guide columns. The originally used metal guide columns are prone to minor wear after long-term operation, which affects the accuracy and yield of chip processing.
Our solution: We provide customized 99.5% high-purity alumina ceramic columns for it. Through isostatic pressing and precision grinding, the dimensional accuracy of ceramic columns is controlled within ± 0.01mm, with a surface roughness of Ra ≤ 0.2 μ m and a friction coefficient as low as 0.1.
Application effect: After replacing with alumina ceramic columns, the accuracy and stability of the transmission system have been significantly improved. After thousands of hours of continuous operation, the accuracy deviation of the equipment still remains within a very small range. The customer stated that this directly improved the yield of their chip products and enhanced their market competitiveness.

If you are facing difficulties such as equipment wear, corrosion, or high temperature insulation, please feel free to contact us at any time. Whether it’s standard procurement or non-standard customization, we will provide you with the most suitable alumina ceramic solution based on our professional technology and rich experience.

Brudeze Ceramics supplies and sells a wide range of high-quality quartz glass, including alumina ceramics, zirconia ceramics, silicon nitride ceramics, aluminum nitride ceramics, silicon carbide ceramics, boron carbide ceramics, bioceramics, machinable ceramics, etc. We can meet the customization requirements of various ceramic products.