Application of Aluminum Oxide for Sapphire Polishing?
In the polishing industry, the main applications of high-purity alumina are in the metal products and gemstone as well as precision glass industries. For metal industries like sapphire polishing, such as automotive polishing, the alumina requires high cutting force and high brightness, but the purity requirements are not as stringent as in the gemstone industry. In this field, alumina is often used as a raw material to produce polishing wax for the polishing process. In the gemstone industry, polishing is generally divided into three stages: coarse, medium, and fine polishing, with high-purity alumina being used for the fine polishing stage. The sapphire polishing industry has higher purity requirements for polishing alumina. Nowadays, most enterprises mix high-purity alumina with polishing fluids for use.
High-end polished alumina is still monopolized by Japanese companies, with higher prices. Domestically, polished alumina is not yet fully mature, and the high-end market is still unstable. The polishing market holds great potential.
