Alumina Ceramic Disc Cover is a high-performance industrial component made of high-purity alumina (Al₂O₃) material, designed for high-temperature, corrosion-resistant and high-insulation scenarios. Compared with similar products made of ordinary ceramic or metal materials, its core advantage lies in the natural characteristics of alumina ceramics: hardness close to corundum (Mohs hardness level 9), low thermal expansion coefficient (about 7×10⁻⁶/℃), and excellent chemical stability (resistant to acid, alkali and organic solvent corrosion). These characteristics make it an upgraded alternative to traditional materials in the fields of electronic packaging, high-temperature sealing, and mechanical wear-resistant parts.
Material characteristics: High-purity alumina (≥95%) ensures low dielectric loss (εr=9-10) and high body resistivity (10¹⁴Ω·cm), suitable for insulation protection of 5G communication modules and semiconductor equipment.
Heat resistance: It can work stably below 1600℃ for a long time, and can withstand temperatures of 1800℃ in the short term. It is suitable for scenarios such as aviation engine sealing and high-temperature valve covers in the metallurgical industry.
Wear and corrosion resistance: The surface hardness reaches HRA88, and the service life is 3-5 times longer than that of metal covers in sanding and corrosive fluid environments. Typical applications include chemical pump body seals and wear-resistant parts of mining machinery.
Precision adaptation: ±0.01mm dimensional accuracy is achieved through CNC processing, compatible with standard flange interfaces, and can directly replace imported parts to reduce equipment maintenance costs.
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