Product Details
Place of Origin: Made In China
Brand Name: Dayoo
Payment & Shipping Terms
Minimum Order Quantity: Negotiable
Price: Negotiable
Delivery Time: Negotiable
Payment Terms: Negotiable
Flexural Strength: |
300-500 |
Compressive Strength: |
2000 MPa |
Transparency: |
Opaque |
Properties: |
Electric Insulation |
Maximum Use Temperature: |
1600°C |
Low Thermal Expansion: |
Yes |
Machinability: |
Difficult |
Dimensional Tolerance: |
±0.001 Mm |
Alumina Content: |
95% |
Biocompatibility: |
Yes |
Mechanical Strength: |
Very High |
Elastic Modulus: |
380 GPa |
Density: |
3.9 G/cm3 |
Bulk Density: |
>3.63 |
Shape: |
Round |
Flexural Strength: |
300-500 |
Compressive Strength: |
2000 MPa |
Transparency: |
Opaque |
Properties: |
Electric Insulation |
Maximum Use Temperature: |
1600°C |
Low Thermal Expansion: |
Yes |
Machinability: |
Difficult |
Dimensional Tolerance: |
±0.001 Mm |
Alumina Content: |
95% |
Biocompatibility: |
Yes |
Mechanical Strength: |
Very High |
Elastic Modulus: |
380 GPa |
Density: |
3.9 G/cm3 |
Bulk Density: |
>3.63 |
Shape: |
Round |
The alumina ceramic insulating support ring is manufactured from high-purity (above 99%) alumina material, featuring exceptional electrical insulation properties, mechanical strength, and high-temperature resistance. This product maintains stable physical and chemical performance even in high-temperature, high-pressure, and corrosive environments, widely used for insulation support and positioning in power electronics, vacuum equipment, and other fields.
Electrical Equipment: High-voltage switches, insulators, circuit breakers
Electronics Industry: Semiconductor manufacturing equipment, vacuum coating chambers
New Energy: Fuel cell stacks, electrolyzer insulation components
Vacuum Technology: High-vacuum system insulation supports
High-Temperature Equipment: Kiln, heating device insulation structures
✅ Ultra-High Insulation: Volume resistivity >10¹⁴Ω·cm (room temperature)
✅ High-Temperature Resistance: Continuous operating temperature up to 1600°C
✅ High Mechanical Strength: Compressive strength >2000MPa
✅ Precision Dimensions: Tolerance up to ±0.01mm
✅ Corrosion Resistance: Resists acid/alkali erosion (except hydrofluoric acid)
Parameter | Specification |
---|---|
Material | 99% Al₂O₃ |
Density | 3.8-3.9 g/cm³ |
Flexural Strength | ≥350 MPa |
Dielectric Strength | ≥15 kV/mm |
Thermal Expansion Coefficient | 7.2×10⁻⁶/°C |
Surface Roughness | Ra≤0.4μm |
Operating Temperature Range | -50°C to 1600°C |
Raw Material Processing: Fine grinding of high-purity alumina powder
Forming Process: Isostatic pressing/injection molding
High-Temperature Sintering: 1700-1800°C atmosphere-protected sintering
Precision Machining: CNC internal/external cylindrical grinding
Laser Marking: Product identification and traceability
Inspection & Packaging: Dimensional inspection + insulation testing
Clean contact surfaces before installation to remove oil and contaminants
Avoid edge impacts to prevent brittle fracture
For high-temperature environments, recommend gradual temperature installation
Regularly check insulation resistance (suggest every 6 months)
Consider thermal expansion differences when mating with metal components
Free technical consultation and selection support
48-hour response for non-human damage cases
Custom development based on drawings
Regular maintenance manual updates
Q: What is the maximum withstand voltage?
A: Standard products 15kV/mm, specially designed up to 30kV/mm
Q: Can complex-shaped structures be manufactured?
A: Custom complex shapes available, minimum wall thickness ≥1mm
Q: How to test insulation performance?
A: Megohmmeter testing recommended (test voltage 1000V DC)
Q: How to fix with metal components?
A: Recommend high-temperature adhesive bonding or mechanical clamping