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China Wear-Resistant Alumina Ceramic With High Flexural Strength And Low Thermal Expansion Coefficient for sale

Wear-Resistant Alumina Ceramic With High Flexural Strength And Low Thermal Expansion Coefficient

Price Negotiable
Price: as negotiated and agreed
MOQ: as negotiated and agreed
Delivery Time: depend on the actual product
Brand: Dayoo
Product Description

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.

 

 

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Dayoo Advanced Ceramic Co.,Ltd
Location No. 6, Shuangjin Street, Qiubin Industrial City, Qiubin Street, Wucheng District, Jinhua, Zhejiang
Contact Person Lu

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