CBN Profile

Cubic boron nitride , the formula BN, diamond-like crystal structure , lower hardness than diamond is HV72000 ~ 98000 MPa , and the tool used as the abrasive material . In 1957 , RH temperature Rostov establishment of the United States first developed CBN .
For a long time , the CBN is considered non-existent in nature , until 2009 , the American University of California, Riverside , Lawrence Livermore National Laboratory scientists and their counterparts from China , Germany, together with research institutions , found in the mountainous Tibetan Plateau in southern China about 306 kilometers deep underground ancient oceanic crust of this mineral chromium-rich rocks , which at about 1300 degrees Celsius , atmospheric pressure conditions 118,430 formed CBN abrasive grit crystals. The team with Professor Qing-Song Fang Institute of Geology, Chinese Academy of Geological Sciences names new mineral named qingsongite ( suffix ite said mineral ) . International Mineralogical Association in August 2013 formally recognized that this is a new mineral - CBN . And the atomic structure of diamond- like carbon atoms in the structure, it has the green silicon carbide characteristics of high density and hardness comparable to the diamond , and the tool is often used as an abrasive material .
CBN CBN (Cubic Boron Nitride) is the first use in the 1950s by the U.S. General Electric (GE) company artificially synthesized under high temperature and pressure conditions , and its hardness only to diamond and is much higher than other materials , thus it is referred to as superhard materials and diamond .
CBN
CBN is a hexagonal boron nitride and catalyst at high temperature synthesis , following the advent of synthetic diamond appeared a new type of high-tech products . It has high hardness, thermal stability and chemical inertness , and good rosy appearance and wide band gap , excellent performance , it is second only to diamond in hardness , but much higher than the thermal stability of James Bond stone, iron -based metal element has a greater chemical stability. CBN abrasive grinding performance is excellent , not only capable of performing difficult to grind materials processing , increase productivity , but also effectively improve the grinding quality of the workpiece. CBN is a major contribution to the use of metal processing , leading to revolutionary changes grinding , grinding is the second leap in technology .