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Wear-Resistant Alumina Ceramic With High Flexural Strength And Low Thermal Expansion Coefficient
Product Introduction
This product is a precision structural part made of high-purity alumina ceramic (Al₂O₃ content ≥ 95%). It is manufactured using the cold isostatic pressing forming and high-temperature sintering processes. It has a milky-white cylindrical shape, with a smooth and flawless inner wall. The outer wall is equipped with symmetrical clamping grooves and strip-shaped through holes. It possesses excellent mechanical strength and high-temperature resistance performance.
Core Advantages
Hardness reaches HRA85 - 90, and wear resistance is 3 - 5 times better than that of metal materials.
Resistant to high temperatures up to 1600℃, with a thermal expansion coefficient as low as 7.5×10⁻⁶/℃.
Insulation resistance ＞ 10¹⁴Ω・cm, dielectric loss ＜ 0.001.
Density ≥ 3.6g/cm³, water absorption rate ＜ 0.01%.
Specification Parameter Table
Parameter Item
Value
Unit
Outer Diameter
50±0.2
mm
Inner Diameter
30±0.1
mm
Length
80±0.3
mm
Surface Roughness
Ra0.8
μm
Flexural Strength
≥350
MPa
Application Fields
Motor shaft sleeves for new energy vehicles, semiconductor wafer carriers, guide wheels for photovoltaic silicon wafer cutting, puncture components for medical devices.
Process Flow
Raw material proportioning → Ball milling to make pulp → Spray granulation → Cold isostatic pressing forming → Debinding and sintering (1650℃) → Precision CNC machining → Ultrasonic cleaning → Laser detection.
Instructions for Use
Avoid knocking with hard objects during installation. It is recommended to use special tooling for positioning.
The working temperature should not exceed 1500℃, and sudden thermal shocks should be avoided.
When cleaning, use absolute ethanol for ultrasonic cleaning. Strong acids and alkalis are prohibited.
After-sales Service
Provide a 1-year quality guarantee, support free size re-inspection. For non-human-caused damages, free return and exchange are available.
FAQ
Q: Can special sizes be customized? A: Customization within the range of 10 - 200mm in diameter is supported, with a lead time of 7 - 15 days.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.
Deyu Precision Ceramics Technology Co., Ltd. has many years of e... We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.
Deyu Precision Ceramics Technology Co., Ltd. has many years of e...
