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Документ Application of minimum lubrication methodology for diamond spark grinding(Editura "Academica Brâncuşi", Târgu Jiu, 2020) Gutsalenko, Yury; Iancu, Cătălin; Rudnev, Alexander; Strelchuk, R. M.The electric discharge bases of the technological advantages of diamond spark grinding make it possible to consider this processing method among the environmentally promising in nature. A decrease in the thermo-mechanical tension of mass micro-cutting in the zone of diamond spark grinding, which is ensured by the development of its working relief, supported by the action of electric discharges on the bond of the wheel, also makes it possible to consider approaches to organizing this process using the minimum lubrication methodology. The paper presents and summarizes the experimental results of using a number of solid lubricants, gives practical recommendations and defines the tasks of further research. Work in this direction is focused on reducing the use of water in servicing industrial needs, which is an urgent global environmental challenge to the development of civilization and meets the modern technocratic strategies of the European Union (Industry 4.0), Japan (Society 5.0), China (Made in China 2025) and other leading world economies.Документ Analysis of residual stresses and durability of the cutting inserts after diamond-spark grinding(Editura "Academica Brâncuşi", Târgu Jiu, 2020) Sizyi, Yury; Strelchuk, R. M.; Jha, Shailendra Kumar; Rudnev, Alexander; Gutsalenko, YuryThe article presents an analysis of residual stresses and resistance of cutting inserts after the diamond-spark grinding. In the entire investigated range of traverses (0.01...0.07mm/double stroke) and wheel speed (18...32m/s), the total residual oriented stresses in both phases are compressive and they have an extreme character with a point of extremum (minimum) in the center of the interval (Sпоп = 0.04mm/double stroke; Vкр = 25m/s). In the carbide phase, the main share in the formation of the total stress state of the surface layer of the STIM-3B (СТИМ-3Б) hard alloy is made by macrostresses. The mechanism of their formation is thermal at small and large values of the traverse and wheel speed, and power one—at medium values. The importance of interfacial microstresses in this phase is minor. In the binding phase of nickel, the interfacial component contributes significantly to the formation of the general stress state, due to the force factor at average values of the grinding mode mechanical parameters and thermal parameters in the rest of the range. The highest wear resistance of tools made of STIM-3B (СТИМ-3Б) alloy corresponds to the highest value of compressive interfacial microstresses in the plastic phase (Ni).Документ Some generalizations and representations of the possibilities of multi-parametric mapping of affin space in an appendix to the curvolinear forming and transmission movement(Editura "Academica Brâncuşi", Târgu Jiu, România, 2018) Gutsalenko, Yury; Mironenko, Alexander; Shelkovoi, Alexander; Tretyak, Tatyana; Mironenko, SergeyThe works of Prof. B. A. Perepelitsa from Kharkov Polytechnic Institute and his disciples to develop an applied methodology of multiparameter mappings in relation to the profiling and functioning of complex curvilinear objects and transmission mechanisms in mechanical engineering, mainly with examples of gears, are presented. The completed review is gratefully devoted to the 10th anniversary of Fiability & Durability Journal, which has repeatedly provided its platform to the authors to highlight this development of the wide Romanian, European and world scientific community.Документ Structural approach to the mathematical description and computer visualization of plane kinematic curves for the display of gears(Editura "Academica Brâncuşi", Târgu Jiu, România, 2018) Tretyak, Tatyana; Mironenko, Alexander; Gutsalenko, Yury; Krukova, Natalia; Mironenko, SergeyThe structural approach stated in this paper allows to simulate the different plane kinematic curves without their concrete analytic equations. The summarized unified mapping system for rack gearing is used. The examples of plane kinematic curves received by the structural method on computer are adduced.Документ Exploitative destruction features for detonation ultra-dispersed diamonds of initial metallic protection for abrasive powder grains to diamond-spark grinding tools(Constantin Brancusi University of Targu Jiu, 2015) Gutsalenko, Yury; Iancu, Cătălin; Bratan, SergeyThe problem of exploitation of diamond grinding wheels with metal coating for their grains including detonation ultra-dispersed diamonds to increase functional reliability to maintain the initial integrity of grains in the pressing and sintering of diamond-metal composites in the tool production is considered. One problem is that the presence of detonation ultra-dispersed diamonds in the grain metal coating of diamond powders not only improves the coating functional reliability in protection from destruction in the subsequent pressing and sintering in the production tool, but also resistance of such coating to the opening of the diamond cutting basis of the grains on the grinding wheel working surface that come into working contact with the material being processed. An analysis of the features of an effective exploitative destruction of detonation ultra-dispersed diamonds in the metal coating using electric current in the tool of the diamond-spark grinding processes is presented.Документ Analysis and comparative description of preparation methods of small cylindrical connections precision surfaces to the assembly(Constantin Brancusi University of Targu Jiu, 2015) Bratan, Sergey; Bogutsky, Vladimir; Buzko, Alexander; Gutsalenko, YuryThe article describes the methods of finishing precision surfaces of small cylindrical connections.