PCD polycrystalline diamond

As a  abrasive grinding  diamond cutting tool materials have been used for hundreds of years of history. In the tool development process, from the nineteenth century to the mid-twentieth century, high-speed steel tool material as the main representative; 1927 Germany developed the first carbide tool material and is widely available; nineteen fifties, Sweden and USA were synthesized diamond cutting tool with  grinding wheel materials from entering the representative period. 1970s, people were synthesized using high pressure synthesis of  cubic boron nitride  diamond (PCD), to solve the natural diamond scarce and expensive problems, make the diamond tool applications extended to aviation, aerospace, automotive, electronics, stone other fields.