Shevchyk G. The increasing of reliability hard-loading cemented-carbide single-point cutting tools with surface treatment on a base of a study of the it's wearing kinetics and failure mechanism

Reliability of hard-loading carbide tools with surface treatment. Increasing of reliability of hard-loading carbide turning tools with surface treatment for account of domain specification of their use, cutting regime, blunt criterion and being diagnostics in base of adequate wear process description. The research methods are using of mathematical modeling with elaboration of statistic and differential models, wear tests. Apparatus: instrumental microscope MMI-2, double microscope MIS-11, semi-automatic X-ray apparatus DRON-3M, galvanometer М907, ammeter E59, dynamometer UDM-600, amplifier UTC-1, noise and vibrations measuring device VSV-003. Technological and operational heredity essential role of wear process of carbide turning tools uncovered. The space-temporal wear model with feed-back offered for tool wear kinetics formalization. For the first time established, that wear kinetics of carbide turning tools determines by interaction "discrete" and processes "continuous". Wear process description by worked up 2...3 times more exact lump-exponential dependence, than employed far and wide differentiated functions. Carbide turning tools rub wear size determines by of blade crumbling process under vibrations action. It argues by similarity of rub wear and vibrations level functions from cut thickness, cutting speed, wear resistance coverage. The coefficients of lump-exponential blade wear process model such as establishing wear speed and rub wear size used for carbide turning tools cutting properties complex differential estimation. This permit to work up proposals related to rational using domain, cutting regimes and blunt criterions of carbide turning tools with TiCN coverage attached to cast-iron turning. The new fortune diagnostics method of carbide turning tools in cutting process based on chip flight direction control proposed. Recommendations related to rational using domain, cutting regimes and blunt criterions of carbide turning tools with TiCN coverage inculcated on OAU "Artemovsk machine-building plant "Labour Victory". Worked up tool wear resistance estimation methods adopted to use in Ukrainian state chemical-technological university.