Dayoo Advanced Ceramic Co.,Ltd
| Delivery Time | Negotiable |
| Payment Terms | Negotiable |
| Thermal Shock Resistance | Excellent |
| Alumina Content | 92% & 95% |
| Mechanical Strength | High |
| Chemical Resistance | Excellent |
| Corrosion Resistance | High |
| Precision Tolerance | High |
| Machinability | Difficult |
| Thermal Conductivity | 35 W/mK |
| Max Operating Temperature | 1500°C |
| Flexural Strength | 350 MPa |
| Materials | 92% alumina powder |
| Purity | 96%,99% |
| Size | Customized |
| Thermal Expansion Coefficient | 8.0 x 10-6 /K |
| Volume Resistivity | 10^14 Ω·cm |
| Place of Origin | Made In China |
| Brand Name | Dayoo |
View Detail Information
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Product Specification
| Delivery Time | Negotiable | Payment Terms | Negotiable |
| Thermal Shock Resistance | Excellent | Alumina Content | 92% & 95% |
| Mechanical Strength | High | Chemical Resistance | Excellent |
| Corrosion Resistance | High | Precision Tolerance | High |
| Machinability | Difficult | Thermal Conductivity | 35 W/mK |
| Max Operating Temperature | 1500°C | Flexural Strength | 350 MPa |
| Materials | 92% alumina powder | Purity | 96%,99% |
| Size | Customized | Thermal Expansion Coefficient | 8.0 x 10-6 /K |
| Volume Resistivity | 10^14 Ω·cm | Place of Origin | Made In China |
| Brand Name | Dayoo | ||
| High Light | Industry Alumina Ceramic ，High Temperature Alumina Ceramic | ||
Precision Ceramic Processing For Alumina Ceramic Insulating Sleeves In High-Performance Applications
Alumina ceramic insulating sleeves are specialized ceramic tubes manufactured from high-purity aluminum oxide (Al₂O₃). These components exhibit exceptional electrical insulation properties, mechanical strength, and high-temperature resistance. Produced through precision ceramic processing with smooth, dense surfaces, they provide ideal insulation protection for electrical, electronic, and industrial equipment operating in extreme environments.
High-voltage electrical equipment: Insulation protection for transformers, circuit breakers, insulators
Electronic components: Insulation sleeves for semiconductor devices, vacuum tubes, sensors
Industrial heating systems: Protection tubes for high-temperature furnaces, heating elements, thermocouples
Special environments: Insulation protection in corrosive media and high-radiation conditions
Superior insulation: Volume resistivity >10¹⁴Ω·cm, dielectric strength >15kV/mm
High-temperature resistance: Continuous use up to 1600°C, short-term tolerance to 1800°C
Excellent mechanical strength: Flexural strength >300MPa, hardness >9 Mohs
Chemical stability: Resistant to acid/alkali corrosion, non-aging, long service life
Precision dimensional control: Inner diameter tolerance within ±0.02mm
| Parameter | Specification |
|---|---|
| Material purity | 99.5% Al₂O₃ |
| Density | 3.8-3.9g/cm³ |
| Flexural strength | ≥350MPa |
| Thermal expansion | 7.5×10⁻⁶/K(20-1000℃) |
| Max. service temp. | 1600°C (continuous) |
| Insulation resistance | >10¹⁴Ω·cm(20℃) |
| Standard sizes | Φ2-150mm×L10-500mm |
Material preparation: Fine grinding and formulation of high-purity alumina powder
Forming processes: Isostatic pressing/extrusion/slip casting
High-temperature sintering: Precision-controlled sintering at 1650-1800°C
Precision machining: Internal/external grinding, end face polishing, laser drilling
Quality inspection: Dimensional checks, insulation tests, strength tests
Avoid impact during installation to prevent brittle fracture
Consider thermal expansion in high-temperature applications
Use flexible gaskets when mating with metal components
Regularly inspect surface cleanliness to prevent conductive deposits
24/7 technical support team
Product selection and technical consultation
Custom solutions available (15-30 day lead time)
Q: What voltage can alumina ceramic sleeves withstand?
A: Standard products withstand 15-30kV/mm; specially designed units up to 50kV/mm
Q: Can you produce non-standard shaped insulating sleeves?
A: Yes, we customize various shapes including tapered and stepped designs
Q: What is the minimum achievable wall thickness?
A: Standard minimum is 0.5mm; 0.3mm available with special processes
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. Deyu Precision Ceramics Technology Co., Ltd. has many years of e... We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. Deyu Precision Ceramics Technology Co., Ltd. has many years of e...
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