Chumak A. Increasing the stability of tools made of superhard composites of cubic boron nitride of the BL group during the final blade processing of hardened steels

In this dissertation an actual scientific and technical problem is solved, which consists in increasing the stability of tools from KNB of the BL group during the finishing treatment of hardened steels due to the formation of the working surfaces of cutting tools and changing the conditions of contact interaction of the tool with the processed material, studying the patterns of formation of the structure and properties of tool materials appointment. The main conclusions and results of the work are as follows. Based on the results of the study of the kinetics of wear of modified cutting tools from PсBN of the ВН and BL groups during the processing of hardened ХВГ steel with impact, a diagram of the ranges of cutting modes in the coordinates "cutting speed-cutting depth" was obtained, which made it possible to determine the zones of effective application of modified tools from PKNB of the BL groups and BH.