High-Temperature Resistant Alumina Ceramic Insulation Tubes For High-Speed Rail Power Systems

High-Temperature Resistant Alumina Ceramic Insulation Tubes For High-Speed Rail Power Systems

Product Introduction

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.

Key Applications

• 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

Core Advantages

⚡ 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

Technical Specifications

Manufacturing Process

1. Powder Preparation: High-purity alumina powder (D50=0.6μm)

2. Isostatic Pressing: 250MPa high-pressure forming for uniform density

3. Atmosphere Sintering: 1650℃ nitrogen-protected sintering

4. Precision Machining: Simultaneous OD/ID grinding (concentricity ≤0.01mm)

5. Surface Treatment: High-temperature glazing (surface resistance >10¹⁴Ω)

6. Full Inspection: 100% withstand voltage test + ultrasonic testing

Installation Guidelines

⚠ 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

Service Commitment

• 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

Technical FAQ

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

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 experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.