Alumina Ceramic Outstanding Electrical Insulation And Mechanical Strength For Precision Instruments

Introduction
Alumina ceramic is an advanced engineering ceramic material primarily made from high-purity alpha-alumina (Al₂O₃), manufactured using isostatic pressing and high-temperature sintering processes. This material offers excellent comprehensive properties, including outstanding electrical insulation, extremely high mechanical strength, exceptional wear resistance, and stable chemical performance, making it an indispensable key material in precision instruments and machining fields.

Applications

• Precision Instruments: High-precision insulating pillars, measuring instrument support components, vacuum equipment insulation parts, optical instrument positioning components

• Machining: High-speed spindle guide bushings, precision guideway sliders, CNC machine tool bearing sleeves, automation equipment guide components

Advantages

1. Excellent Electrical Insulation: Volume resistivity >10¹⁴ Ω·cm, dielectric strength 18-25 kV/mm

2. Outstanding Mechanical Properties: Compressive strength 2300-3000 MPa, Vickers hardness 1650-1850 HV

3. Exceptional Wear Resistance: Wear rate only 1/8-1/10 that of bearing steel

4. Good Dimensional Stability: Low coefficient of thermal expansion maintains dimensional stability over a wide temperature range

5. Strong Chemical Stability: Resistant to acid and alkali corrosion, does not react chemically with other materials

Specification Parameters Table

Manufacturing Process
Raw material selection → Formula optimization → Spray granulation → Isostatic pressing → High-temperature sintering → Precision grinding → Laser trimming → Non-destructive testing → Performance testing → Strict quality inspection

Usage Instructions

1. Clean contact surfaces with anhydrous ethanol before installation

2. Use special installation tools, avoid direct impact

3. Reserve 0.02-0.05mm thermal expansion clearance when matching with metal parts

4. Recommend checking wear condition every 1000 operating hours

5. Operating temperature range: -50℃ to 1400℃

After-Sales Service

1. 24-month product quality guarantee

2. Professional technical team 7×24 support

3. Free product selection and technical consultation

4. Establish customer usage files, regular maintenance reminders

5. 48-hour response for emergency orders

FAQ

1. Q: What grade of dimensional accuracy can alumina ceramic achieve?
   A: Conventional machining accuracy can reach IT5 grade, precision machining can reach IT3 grade

2. Q: Can it be used in high temperature and humid environments?
   A: Yes, the material has good high temperature resistance and moisture-proof performance

3. Q: What is the delivery time for products?
   A: 7-10 days for standard products, 15-20 days for special specifications