Alumina Insulator Manufacturing Experts
Alumina insulators from Jinghui Ceramic are engineered for superior high-temperature stability and electrical insulation properties. Made from high-purity alumina (Al₂O₃), these insulators withstand extreme temperatures (up to 1800°C) and harsh environments, making them essential for industries like semiconductor manufacturing, power transmission, and industrial furnace systems.
By Features
Alumina insulators are widely used in various electrical and electronic applications,such as high-voltage electrical equipment，electrical insulators with excellent insulating properties, high-temperature resistance, and durability.
High dielectric strength (>20 kV) and thermal shock resistance for automotive spark plugs.
Hollow design for high-temperature sensor protection and furnace components.
Corrosion-resistant alumina for gas igniters and industrial burners.
Ultra-high voltage resistance (110–500 kV) for overhead transmission lines.
Non-conductive alumina (>10¹⁴ Ω·cm) for circuit breakers and switchgear.
Precision-machined to isolate live components in EV batteries and busbars.
Arc-resistant rings for transformer bushings and substation equipment.
Grooved fork design (±0.1 mm) for secure PCB mounting and vibration damping.
Main Technical Specifications and Application
- Material: Alumina (Al₂O₃, 95%-99.9% purity)
- Max Operating Temperature: 1800°C
- Dielectric Strength: 15-30 kV/mm
- Thermal Conductivity: 20-30 W/m·K
- Applications: High-voltage equipment, furnace linings, semiconductor processing.
Alumina insulators offer superior thermal stability (up to 1800°C), excellent electrical insulation, and high corrosion resistance, outperforming polymers and metals in extreme environments. Their low porosity and high mechanical strength ensure long-term reliability in industrial furnaces, power systems, and semiconductor equipment.
Yes, alumina insulators exhibit exceptional thermal shock resistance due to their low thermal expansion coefficient. They maintain structural integrity even under rapid heating/cooling cycles, making them ideal for applications like aerospace engines and high-temperature reactors.
Absolutely. Alumina insulators provide high dielectric strength (15-30 kV/mm), effectively preventing electrical leakage in high-voltage environments. They are widely used in power transmission, circuit breakers, and electronic substrates.
Jinghui Ceramic employs ISO-certified manufacturing, rigorous density testing, and thermal shock validation. Our alumina insulators undergo strict quality control to meet industrial standards for performance, durability, and safety.