Hardness HRA90-92 Alumina Ceramic Ring
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.
- Precision Machinery: High-speed motor bearing retainers, servo system positioning rings
- Electronic Semiconductors: IC test fixture insulation bases, wafer carrier positioning components
- New Energy Sector: Lithium battery pole piece cutting dies, hydrogen fuel cell bipolar plate frames
- Medical Devices: Minimally invasive surgical instrument guide sleeves, dental implant abutment connectors
✅ 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
Raw material proportioning → Ball milling → Spray granulation → Isostatic pressing → Degreasing → High-temperature sintering → CNC precision machining → Ultrasonic cleaning → Laser inspection → Vacuum packaging
- Use dedicated ceramic clamping tools during installation to prevent impact damage
- Control temperature changes to ≤5℃/min in working environment
- Clean with anhydrous ethanol ultrasonic cleaning (power ≤40kHz)
- Avoid storage with metal hard objects; use anti-static packaging
✓ 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)
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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