Abrasive industry is a basic industry, but it always occupies an extremely important position in machining.As far as abrasive and abrasive tools are concerned, there are three significant improvements and breakthroughs.First, the improvement of the physical structure of the grinding tool, such as increasing the number of abrasive particles acting on the workpiece per unit time, increasing the average grinding length and increasing the grinding contact surface, all of which change the amount of grinding per unit time and effectively improve the efficiency.Second, the application of superhard abrasive tools, mainly refers to the metal powder, metal oxide or CBN and other superhard materials as filler, resin, ceramics or metal binders made of the application of abrasive tools.

At present, the grinding effect with high precision and efficiency brought by super-hard grinding tools has been widely recognized.Third, the emergence of new abrasive tools, such as ceramic microcrystalline abrasive composed of micron level polycrystalline, spherical shell abrasive containing fine diamond abrasive particles, polyester film belt for superfine polishing, etc.The characteristics of these new abrasive tools make their advantages in grinding process fully displayed.

Throughout the development of grinding field, the future grinding process will put forward higher requirements for abrasive and abrasive tools, judging from the current situation, ultra-hard products just meet these new grinding needs.For example, CBN abrasive has good thermal stability, high hardness, good wear resistance and other characteristics, so its grinding tool in the grinding process of linear speed, grinding efficiency, grinding tool life is also high, especially suitable for processing high-speed steel, bearing steel, stainless steel, cold cast iron and other black metal materials.In addition, ceramic bond grinding wheels, high speed grinding wheels with large pores, grinding wheels with different abrasive particles on different machining surfaces