Precision Ceramic Processing For Alumina Ceramic Insulating Sleeves In High-Performance Applications

Product Introduction

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.

Primary Applications

• 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

Product Advantages

1. Superior insulation: Volume resistivity >10¹⁴Ω·cm, dielectric strength >15kV/mm

2. High-temperature resistance: Continuous use up to 1600°C, short-term tolerance to 1800°C

3. Excellent mechanical strength: Flexural strength >300MPa, hardness >9 Mohs

4. Chemical stability: Resistant to acid/alkali corrosion, non-aging, long service life

5. Precision dimensional control: Inner diameter tolerance within ±0.02mm

Technical Specifications

Manufacturing Process

1. Material preparation: Fine grinding and formulation of high-purity alumina powder

2. Forming processes: Isostatic pressing/extrusion/slip casting

3. High-temperature sintering: Precision-controlled sintering at 1650-1800°C

4. Precision machining: Internal/external grinding, end face polishing, laser drilling

5. Quality inspection: Dimensional checks, insulation tests, strength tests

Usage Instructions

1. Avoid impact during installation to prevent brittle fracture

2. Consider thermal expansion in high-temperature applications

3. Use flexible gaskets when mating with metal components

4. Regularly inspect surface cleanliness to prevent conductive deposits

Service Commitment

• 24/7 technical support team

• Product selection and technical consultation

• Custom solutions available (15-30 day lead time)

FAQ

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