Precision-Engineered Alumina Ceramic Bars For High-Speed Trains Metro Power Systems And Industrial Control Equipment
Precision-Engineered Alumina Ceramic Bars For High-Speed Trains Metro Power Systems And Industrial Control Equipment
Product Introduction
Our alumina ceramic insulation support bars are precision-engineered from 99% high-purity alumina material, specifically designed for insulation support requirements in high-voltage electrical equipment. Featuring hardness above HV1500 and insulation strength >15kV/mm, with specially polished surfaces that withstand over 100,000 mechanical friction cycles, these bars are the ideal replacement for traditional epoxy resin insulation components.
Primary Applications
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Power Equipment: High-voltage switchgear insulation supports, circuit breaker isolation bars
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New Energy: PV inverter insulation brackets, wind power converter isolation parts
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Rail Transit: High-speed train pantograph insulation supports, metro power supply systems
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Industrial Control: Frequency converter insulation plates, large motor insulation frames
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Laboratory Equipment: High-voltage test equipment insulation brackets
Key Advantages
✔ Superior Insulation: Volume resistivity >10¹⁵Ω·cm
✔ Arc Resistance: Withstands arcing for over 180 seconds
✔ Mechanical Strength: Flexural strength >350MPa
✔ Weather Resistance: Stable performance from -60℃ to 800℃
✔ Long Service Life: Operational lifespan exceeding 20 years
Technical Specifications
| Parameter | Standard Grade | Enhanced Grade |
|---|---|---|
| Material Purity | 99% Al₂O₃ | 99.5% Al₂O₃ |
| Insulation Strength | 15kV/mm | 18kV/mm |
| Flexural Strength | 350MPa | 400MPa |
| Thermal Expansion | 7.5×10⁻⁶/℃ | 7.2×10⁻⁶/℃ |
| Standard Thickness | 5-20mm | 5-20mm |
| Custom Length | ≤1000mm | ≤1000mm |
Precision Manufacturing Process
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Powder Processing: High-purity alumina powder (D50=0.5μm)
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Dry Pressing: 200-ton hydraulic press molding
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Atmosphere Sintering: 1600℃ nitrogen-protected sintering
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Precision Machining: Surface grinding + chamfering
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Laser Marking: Unique serial numbering for each product
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Full Inspection: Withstand voltage test + dimensional inspection
Installation Guidelines
⚠ Professional Recommendations:
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Clean contact surfaces with anhydrous ethanol before installation
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Recommend using ceramic-specific adhesives for fixation
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Fastening bolt torque should not exceed 8N·m
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Avoid surface scratches from sharp objects
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Regular inspection for cracks (recommended every 2 years)
Service Commitment
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Technical Support: Insulation system design solutions
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Emergency Response: 72-hour rapid replenishment
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Product Traceability: 10-year quality records available
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Customization: Non-standard sizes and structural designs supported
Technical FAQ
Q: How to determine when replacement is needed?
A: Replace when surface cracks exceed 5mm in length or 0.2mm in depth
Q: Usage in humid environments?
A: Recommend moisture-proof models with glazed surface treatment
Q: Compatibility with other insulation materials?
A: Can be used with silicone rubber, epoxy resin and other materials
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.