Most people may have some understanding of zirconia ceramics, an advanced material. It is an inorganic non-metallic material, which is prepared by high-temperature sintering technology, and mainly relies on the phase transformation of zirconia. In order to achieve a mirror effect on the surface of zirconia ceramics, a series of grinding and polishing processes are required.
First of all, the basic machining process of zirconia ceramics includes: blank cutting, grinding, grinding, and polishing multiple steps to make the desired part. The grinding and polishing process mainly uses free abrasives, which are ultra-fine by removing the fine removal of the machined surface. In the precision machining of ceramic materials, such as the machining, grinding and polishing of ceramic bearing balls are indispensable links.
Secondly, from the perspective of the removal mechanism of ceramic materials, the grinding process is between the brittle failure and elastic removal of zirconia ceramics. Whereas, polishing is usually carried out within the elastic removal of the material. Due to the low removal and low processing efficiency of zirconia ceramic materials, grinding and polishing are often used as the final stage of superfinishing. At the same time, the removal rate is related to the toughness of the zirconia ceramic material being processed, the higher the toughness, the lower the processing efficiency, and vice versa.
Finally, the traditional zirconia ceramic polishing method usually uses a plane polishing machine, which is first polished with an iron disc and then polished with a white cloth, but this method is less efficient, and it takes 30-40 minutes to achieve a mirror effect with white cloth polishing alone. Most of the mirror processing of optical materials, semiconductor materials, and ceramic materials is done through grinding and polishing.
To sum up, the mirror effect of zirconia ceramics is achieved by grinding and polishing. Zirconia ceramic materials have the advantages of corrosion resistance, high temperature resistance, thermal shock resistance, etc., making them widely used in many fields.