In order to achieve the high efficiency and low damage grinding of sapphire,and improve the yield of sapphire polishing,this paper summarizes and studies the methods and technologies of the existing lapping of sapphire.According to the sapphire material performance,this paper analyzes the lapping characteristics of sapphire,as well as expounds the ultra-precision lapping technology and the mechanism of sapphire lapping technology.In addition,it summaries the processing methods and progress of free abrasive ...