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China Hardness HRA90-92 Alumina Ceramic Ring for sale

Hardness HRA90-92 Alumina Ceramic Ring

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

Hardness HRA90-92 Alumina Ceramic Ring

 

[Product Introduction]

This high-precision alumina ceramic ring component (purity ≥95%) is manufactured using isostatic pressing technology, featuring an ivory-white porcelain luster with a precision structure consisting of an annular body and symmetrically distributed grooves. Sintered at 1600°C, the product achieves a density of 3.85g/cm³ with surface roughness Ra≤0.4μm. Rounded edge treatment ensures installation safety, making it suitable for core transmission systems in automation equipment.

[Core Applications]

  1. Precision Machinery: High-speed motor bearing retainers, servo system positioning rings
  2. Electronic Semiconductors: IC test fixture insulation bases, wafer carrier positioning components
  3. New Energy Sector: Lithium battery pole piece cutting dies, hydrogen fuel cell bipolar plate frames
  4. Medical Devices: Minimally invasive surgical instrument guide sleeves, dental implant abutment connectors

[Performance Advantages]

✅ Physical Properties: Hardness HRA90-92 (sapphire-comparable), flexural strength ≥350MPa
✅ Temperature Resistance: Operating range -200°C~1600°C, thermal expansion coefficient 6.8×10⁻⁶/°C
✅ Chemical Stability: Resistant to strong acids/alkalis (except hydrofluoric acid), insulation resistance >10¹⁴Ω
✅ Precision Control: Dimensional tolerance ±0.01mm, geometric tolerance ≤0.02mm

[Specification Parameter Table]

Parameter Item Index Value Test Standard
Outer Diameter φ55±0.02mm GB/T 2848-2015
Inner Diameter φ25±0.01mm GB/T 2848-2015
Thickness 10±0.01mm GB/T 2848-2015
Groove Quantity 6 sets symmetric Custom Drawing
Surface Finish Ra0.4μm GB/T 1031-2009
Compressive Strength ≥3000MPa GB/T 4740-1999

[Production Process]

Raw material proportioning → Ball milling → Spray granulation → Isostatic pressing → Degreasing → High-temperature sintering → CNC precision machining → Ultrasonic cleaning → Laser inspection → Vacuum packaging

[Usage Instructions]

  1. Use dedicated ceramic clamping tools during installation to prevent impact damage
  2. Control temperature changes to ≤5℃/min in working environment
  3. Clean with anhydrous ethanol ultrasonic cleaning (power ≤40kHz)
  4. Avoid storage with metal hard objects; use anti-static packaging

[After-Sales Service]

✓ 7-day no-reason return policy (unopened products)
✓ Free replacement for non-human damage within 1-year warranty
✓ Customization service available (MOQ 50 pieces)
✓ Third-party material testing reports (SGS/CTI optional)

[FAQ]

Q: Does the product support high-temperature sterilization?
A: Withstands 134℃ autoclave sterilization (complies with ISO 17665 standard)

 

Q: Is RoHS certification available?
A: Full product range passes RoHS 2.0 ten-item testing (Report No.: ENV20230615012)

 

 

 

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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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