Dayoo Advanced Ceramic Co.,Ltd
| Delivery Time | Negotiable |
| Payment Terms | Negotiable |
| Max Operating Temperature | 1600°C |
| Size | Customized |
| Low Thermal Expansion | Excellent |
| Low Dielectric Loss | 0.0002 |
| Maximum Use Temperature | 1600°C |
| Dielectric Constant | 9.8 |
| Surface Finish | Polished |
| Melting Point | 2072°C |
| Purity | 96%,99% |
| Type | Nozzles |
| Properties | electric insulation |
| Density | 3.9 g/cm3 |
| Elastic Modulus | 380 GPa |
| Electrical Resistivity | 10^14 ohm-cm |
| Method | lsostatic presure |
| Place of Origin | Made In China |
| Brand Name | Dayoo |
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Product Specification
| Delivery Time | Negotiable | Payment Terms | Negotiable |
| Max Operating Temperature | 1600°C | Size | Customized |
| Low Thermal Expansion | Excellent | Low Dielectric Loss | 0.0002 |
| Maximum Use Temperature | 1600°C | Dielectric Constant | 9.8 |
| Surface Finish | Polished | Melting Point | 2072°C |
| Purity | 96%,99% | Type | Nozzles |
| Properties | electric insulation | Density | 3.9 g/cm3 |
| Elastic Modulus | 380 GPa | Electrical Resistivity | 10^14 ohm-cm |
| Method | lsostatic presure | Place of Origin | Made In China |
| Brand Name | Dayoo | ||
| High Light | Strong Mechanical Strength Alumina Ceramic | ||
High-Temperature Resistant Alumina Ceramic Insulation Tubes For High-Speed Rail Power Systems
Our alumina ceramic insulation sleeves are manufactured from 99.5% high-purity alumina material, specifically designed for insulation protection in high-voltage electrical equipment and high-temperature environments. Featuring exceptional insulation strength (>20kV/mm) and hardness (above 1600HV), with special glazed surface treatment achieving arc resistance over 300 seconds, these sleeves represent the ideal replacement for traditional organic insulation tubes.
Power Systems: High-voltage cable termination protection, substation insulation sleeves
New Energy: PV inverter insulation covers, wind power converter protection tubes
Industrial Equipment: Electric furnace heating element protection tubes, high-voltage test equipment insulation covers
Rail Transit: High-speed rail power system insulation, metro third rail protection
Laboratories: High-voltage experimental equipment insulation barriers, plasma equipment protection sleeves
⚡ Superior Insulation: Volume resistivity >10¹⁶Ω·cm, withstand voltage >20kV/mm
⚡ High-Temperature Resistance: Continuous operation up to 1200℃, short-term withstand 1500℃
⚡ Arc Resistance: Meets highest grade of IEC 60672-1 standard
⚡ Mechanical Strength: Flexural strength >400MPa, compressive strength >3000MPa
⚡ Weather Resistance: No cracking in -60℃~1200℃ thermal cycling
| Parameter | Standard Grade | Enhanced Grade |
|---|---|---|
| Al₂O₃ Content | 99.5% | 99.8% |
| Insulation Strength (kV/mm) | 20 | 25 |
| CTE (×10⁻⁶/℃) | 7.5 | 7.0 |
| Flexural Strength (MPa) | 400 | 500 |
| Standard Sizes (mm) | Φ10-200 | Φ10-200 |
| Custom Length (mm) | ≤2000 | ≤2000 |
Powder Preparation: High-purity alumina powder (D50=0.6μm)
Isostatic Pressing: 250MPa high-pressure forming for uniform density
Atmosphere Sintering: 1650℃ nitrogen-protected sintering
Precision Machining: Simultaneous OD/ID grinding (concentricity ≤0.01mm)
Surface Treatment: High-temperature glazing (surface resistance >10¹⁴Ω)
Full Inspection: 100% withstand voltage test + ultrasonic testing
⚠ Professional Recommendations:
Clean inner/outer surfaces with isopropyl alcohol before installation
Recommend using ceramic-specific sealant for fixation
Avoid mechanical impact and localized stress concentration
Regular inspection of glaze layer integrity (recommended annually)
Not suitable for strong fluoride environments
Quality Warranty: 60-month extended warranty
Technical Support: Free insulation system design consultation
Rapid Response: Regional emergency spare parts inventory
Product Traceability: Laser-marked identification with 10-year quality records
Customization: Special sizes and structural designs available
Q: How to determine when replacement is needed?
A: Replace when surface cracks exceed 10mm length or glaze layer loss >5% area
Q: Selection for humid environments?
A: Recommend moisture-proof models with special hydrophobic treatment
Q: Compatibility with other insulation materials?
A: Can be used with silicone rubber/epoxy resin when using special interface agents
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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