Product Name: 96% High-Purity Alumina Ceramic Sleeve / Bushing
Product Material: 96% Alumina ($Al_2O_3$), optional metallized surface for brazing.
Material Characteristics: High mechanical strength and toughness, Excellent electrical insulation (Dielectric strength $> 15$ kV/mm), Good thermal shock resistance, Excellent wear and abrasion resistance, Chemical corrosion stability (acid/alkali), Continuous service up to 1500°C.
Application Fields: Mechanical seal rings, Industrial water pump sleeves, Insulating spacers for electronic devices, Wire drawing guides, Protective liners for pneumatic conveying, Thermocouple tubes for lower heat environments, High-wear bushings for general machinery.
Application Industries: Biomedical (Standard laboratory tools), Advanced Machinery (Pumps and valves), New Energy (Solar cell processing equipment), Fluid Control (Industrial automation), Electronic Engineering (Power supply housing), Aerospace (Non-critical structural parts), Petrochemical (Fluid injection components), Broad Semiconductor (Support structures).
Processing Difficulties: Achieving uniform wall thickness across long batches to ensure consistent mechanical strength, Minimizing surface micro-cracks during high-speed diamond grinding, Controlling sintering shrinkage to meet ISO tolerance standards, Maintaining surface finish ($Ra < 0.4\mu m$) for dynamic sealing applications.
Processing Flow: Powder preparation (Spray drying) → Dry Pressing or Isostatic Pressing → Green machining → High-temperature sintering (approx. 1650°C) → Precision diamond grinding (ID/OD) → Ultrasonic cleaning → Dimensional inspection → Standard protective packaging.
Delivery Period: Standard specifications: 10-15 days,
The 96% Alumina Ceramic Sleeve is the ideal industrial solution for balancing high performance with budget efficiency. Known for its versatile physical properties, the 96% grade offers a denser microstructure and better dielectric properties than lower alumina grades, while being easier to manufacture into complex shapes than 99% alumina. These sleeves provide a rugged, wear-resistant surface that protects internal shafts and components from harsh environments, high friction, and electrical leakage. Whether used in a mechanical seal assembly or as an insulating bushing in an industrial furnace, our 96 alumina sleeves deliver consistent reliability for long-term operations.
Key Features:
Optimized Cost-to-Performance: Provides high hardness and insulation at a more accessible price point for volume production.
Superior Toughness: Slightly better resistance to mechanical impact compared to 99% alumina due to the specialized grain structure.
Thermal Endurance: Operates reliably in high-temperature environments without significant loss of electrical resistivity.
Precision Machinability: Can be ground to high tolerances to ensure a perfect fit with existing metal housings.
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