Diamond and other superhard materials characteristics and effects

In all kinds of data , the natural single crystal diamond is the hardest substance in the world , so as an abrasive and cutting things , its function is unmatched in diamond tools , for example, sharpening its edge radius able to even scanning electron microscopy, can not be detected , until now no one can replace information , apply it to cutting, are sanding belt   often able to directly obtain the mirror , then been widely used in appearance, electronics, optics and other areas , to become deficient not cutting what information , but due to cost precious , sharpening needs clever artistry, so always hinder its widespread use .
Hard data as superior functionality , the use of constantly expanded ( glass grinding wheel ) to carry out from the metal processing optical glass processing, stone processing, ceramics processing, data processing and other brittle difficult for traditional processing areas .
Natural single crystal diamond , because of its anisotropy , and thus the hardness of the difference of the crystal is very large, in the grinding tool when choosing the soft side of a polishing surface , and the surface of their hard as the rake face or the flank , this gives ground to bring favorable conditions , because of its anisotropy , so in use , it is necessary to consider a reasonable selection of planes , for example , hardness of the anvil , in the use of , or bouncing pressed into use to measure the hardness test data , but because of the hardness of the work surface is not the same , the results are different, of course, use a hard surface , is conducive to extend life expectancy , and if the production of natural diamond wire drawing die , because the hole by the crystal surface work surface composition, hardness and thus inconsistent , then uneven wear , with circular cross-section wire give a stress difference , the hardness unevenness affect the application of diamond sintered body and the thick-film diamond , the isotropic product in such sample / the use becomes very favorable.
PCD, PCBN, because the grain is not the same , the concentration is not the same , the function is not the same , it is necessary and reasonable choice. Diamond is a pure diamond thick film , the hardness near to the natural diamond and PCD, PCDN diamond powder is mixed with the metal grinding wheel  binding agent is sintered , and thus the hardness of the binder was , as the hardness of the former.
Is well known , diamond with iron affinity, can be used in non-ferrous metal and non-metal items , while CBN even in a high temperature of 1000 ℃ cutting ferrous metal is fully able to act . Has become difficult to process information for future primary cutting stuff available. Usually hard data refers artificial diamond , artificial CBN. These two items are present together , played a complementary effect , able to mask was carried out with the subsequent processing of a variety of new data on the entire cutting area is extremely beneficial.
Diamond cutting precision grinding needs something clever techniques, in order to obtain more precise cutting edge radius , especially accuracy of less than 0.05um following the grinding machine made ​​appropriate stringent requirements , ( diamond wheels ) have necessary to have  flap wheels a high precision spindle shaft reversal , the old mill has been accustomed to, more choice of air bearings as the support began lapping plate on the machine it is necessary to be able to Shuhei to face runout control 0.5um or less. PCD and PCBN sharpening contrast is relatively simple, because the hardness is relatively low contrast , can be used as a diamond wheel , while the thick diamond is not the same , the hardness near to a natural diamond , and is isotropic, so sharpening contrast difficult.