Alumina Ceramic Functional Components For Precision Instruments: Core Elements Of High-End Equipment
Alumina Ceramic Functional Components For Precision Instruments: Core Elements Of High-End Equipment
Product Introduction
Alumina ceramic functional components are precision functional elements made from high-purity (99%-99.7%) alumina material, covering critical parts such as bearings, seals, and insulating supports. These products achieve micron-level accuracy through precision machining and possess excellent comprehensive performance, making them indispensable core components in precision instruments and high-end electronic equipment.
Main Applications
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Precision Bearings: High-speed spindle bearings, precision instrument bearings, medical device bearings
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Sealing Elements: Mechanical seals for chemical pumps, seals for high-temperature equipment, vacuum system seals
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Insulating Supports: Circuit board insulating supports, electronic component insulating bases, high-voltage equipment insulating parts
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Semiconductor Equipment: Wafer transfer robotic arms, vacuum chamber components, etching equipment accessories
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Measuring Instruments: Precision measurement platforms, optical instrument supports, sensor packaging parts
Core Advantages
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Ultra-High Hardness: Vickers hardness ≥1700 HV, wear resistance is more than 10 times that of bearing steel
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Excellent Insulation: Volume resistivity >10¹⁴ Ω·cm, dielectric strength 15-20 kV/mm
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Corrosion Resistance: Resistant to acids, alkalis, and chemical corrosion, with long service life
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Low Thermal Expansion: Thermal expansion coefficient 7.2×10⁻⁶/K, excellent dimensional stability
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High Rigidity: Elastic modulus 380 GPa, ensuring long-term operating accuracy
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Vacuum Compatibility: Low outgassing rate, suitable for high vacuum environments
Specification Parameter Table
| Parameter | Technical Indicators |
|---|---|
| Material Purity | 99%-99.7% Al₂O₃ |
| Density | 3.85-3.95 g/cm³ |
| Flexural Strength | ≥380 MPa |
| Vickers Hardness | 1700-1800 HV |
| Surface Roughness | Ra≤0.05μm |
| Thermal Expansion Coefficient | 7.2×10⁻⁶/K |
| Dielectric Strength | 15-20 kV/mm |
| Volume Resistivity | >10¹⁴ Ω·cm |
| Maximum Operating Temperature | 1600℃ |
Process Flow
Raw material selection → Formula optimization → Spray granulation → Isostatic pressing → Precision machining → High-temperature sintering → Laser processing → Precision polishing → Ultrasonic cleaning → Quality inspection → Vacuum packaging
Usage Instructions
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Cleaning should be performed in an ultra-clean environment before installation
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Use specialized tools for installation to avoid direct contact with metal tools
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It is recommended to use with appropriate lubricants (such as dry film lubrication)
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Operating temperature changes should be controlled within ±5°C per hour
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Regularly inspect operating status and replace worn parts in a timely manner
After-Sales Service
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24-month quality warranty period
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Professional technical team provides application support
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72-hour rapid response mechanism
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Free technical training and selection guidance
FAQ
Q: What are the advantages of ceramic bearings compared to steel bearings?
A: They offer higher hardness, better corrosion resistance, lighter weight, and longer service life, making them particularly suitable for high-speed and special environment applications.
Q: What is the maximum processable size?
A: The maximum outer diameter for standard products is 200mm, and custom sizes up to 500mm are available for special requirements.
Q: Is complex shape customization supported?
A: Yes, we support customization of various complex-shaped functional components according to customer requirements.
Q: How to ensure sealing performance?
A: It is recommended to install in a constant temperature and humidity environment, use specialized sealing paste, and strictly follow installation specifications.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.