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Alumina ceramic rods and bars are advanced engineering ceramic components manufactured from high-purity aluminum oxide (Al\u2082O\u2083). Featuring exceptional hardness, electrical insulation, wear resistance, and high-temperature stability, these ceramic components are widely used in semiconductor equipment, electronics, industrial machinery, laser systems, medical devices, and automation industries.<\/p>\n
Our alumina ceramic rods are available in round, square, rectangular, and custom profiles with high dimensional accuracy and excellent surface finish. Depending on application requirements, material purity ranges from 95% to 99.8% alumina.<\/p>\n
The product shown is a precision rectangular alumina ceramic bar with excellent surface uniformity and clean machined edges, suitable for demanding industrial and electronic environments.<\/p>\n
Alumina ceramics offer extremely high hardness and superior abrasion resistance, making them ideal for high-wear industrial environments and precision mechanical systems.<\/p>\n
Al\u2082O\u2083 ceramic rods provide outstanding dielectric strength and electrical insulation performance, widely used in semiconductor and electronic applications.<\/p>\n
These ceramic rods maintain excellent mechanical strength and insulation properties under high temperatures up to 1700\u00b0C.<\/p>\n
Alumina ceramics resist acids, alkalis, solvents, and oxidation, ensuring long-term reliability in harsh chemical environments.<\/p>\n
Compared with metal materials, alumina ceramics exhibit lower thermal expansion and excellent dimensional stability during thermal cycling.<\/p>\n
Precision grinding and polishing ensure tight tolerances, smooth surfaces, and consistent dimensional accuracy.<\/p>\n
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1. Raw Material Preparation<\/h3>\nHigh-purity alumina powders are selected according to technical requirements, including:<\/p>\n
Additives and binders are optimized to improve forming consistency and mechanical performance.<\/p>\n
Different forming methods are used depending on geometry and precision requirements:<\/p>\n
For precision rectangular ceramic bars, extrusion combined with precision grinding is commonly adopted.<\/p>\n
The green ceramic bodies are sintered at temperatures between 1600\u00b0C and 1800\u00b0C to achieve dense microstructures and superior mechanical properties.<\/p>\n
Advanced post-processing technologies include:<\/p>\n
These processes ensure excellent flatness, dimensional accuracy, and surface quality.<\/p>\n
| Item<\/th>\n | Specification<\/th>\n<\/tr>\n<\/thead>\n |
|---|---|
| Material<\/td>\n | Alumina Ceramic (Al\u2082O\u2083)<\/td>\n<\/tr>\n |
| Purity<\/td>\n | 95% \u2013 99.8%<\/td>\n<\/tr>\n |
| Shape<\/td>\n | Round \/ Square \/ Rectangular<\/td>\n<\/tr>\n |
| Color<\/td>\n | White \/ Ivory<\/td>\n<\/tr>\n |
| Density<\/td>\n | 3.6 \u2013 3.9 g\/cm\u00b3<\/td>\n<\/tr>\n |
| Hardness<\/td>\n | HRA 80 \u2013 90<\/td>\n<\/tr>\n |
| Maximum Working Temperature<\/td>\n | 1500 \u2013 1700\u00b0C<\/td>\n<\/tr>\n |
| Surface Finish<\/td>\n | Polished \/ Ground<\/td>\n<\/tr>\n |
| Tolerance<\/td>\n | Customizable<\/td>\n<\/tr>\n |
| Custom Machining<\/td>\n | Available<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n \n Applications of Alumina Ceramic Rods<\/h2>\n |
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Product Advantages<\/h2>\n