A. Yu. Albagachiev’s research while affiliated with Institute of Problems of Mechanical Engineering and other places

... To increase antifriction of friction pair in friction bearings at lubrication by low-viscosity liquids materials on the basis of polytetrafluoroethylene (PTFE) are widely used. To improve the tribological characteristics of the friction pair, fillers are introduced into the PTFE structure to improve the mechanical and tribological properties of PTFE [13,14,15]. In [16] the results of the research on application of carbon-carbon materials in a friction pair at lubrication by hydraulic liquid AMg-10 are given. ...

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Investigation of tribological parameters of friction pairs during lubrication with hydraulic fluid and mineral oil

... Taking into account the boundary conditions, let us find the self-similar solution of problem Eq. (3) in the form (6) By substituting Eq. (6) into Eq. (3) and taking into account the boundary conditions Eq. (4), we obtain the following system of equations: ...

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Study of Wear Resistance of a Radial Bearing Covered by a Polymer Coating with an Axial Groove on a Nonstandard Base Surface

... Nanoparticles can reduce the friction coefficient and present a self-restore effect. Nanoserpentine and nanokaolin particles are widely used as self-restore additives [1][2][3]. Both can reduce the friction coefficient and produce a self-restore layer on a friction surface in high friction temperature and high pressure [4]. ...

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Tribological Properties of Nanoparticles in the Presence of MoDTC

... Furthermore, Stavrovskii et al. [32] proposed the utilization of the efficiency of technological systems in production methods to derive DTs for complex systems in design support. DT involves both software and physical elements requiring a comprehensive engineering-oriented approach that combines all parts of a system in an architecture. ...

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Digital Twin in complex operations environments: potential applications and research challenges

... Due to the extremely high chemical activity of FNs, when they enter the melt of the workpiece material, they must first intensively bind, forming complexes, with the melt particles (which, most likely, can ensure the absence of their "slippage" relative to the latter), and then build a fractal grid with the participation of these complexes. A typical example of such a structure is shown in Fig. 1, [8]. In view of the fractal nature of the structure, it is of interest to determine the fractal dimension. ...

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On the question of choosing a resolution for fractal analysis of fulleroid nanostructures in structural and functional materials

... The heat treatment mode efficiency is determined not only by the operation requirements basis [26], but also by its manufacturability and durability, as well as cementite mesh crushing intensity. Known heat treatment modes do not always allow high carbon steels to be used for pre-finishing and finishing stands, as they do not meet the wear resistance requirements. ...

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Improving the Performance Properties of Eutectoid Steel Products by a Complex Effect

... где P -сила прижима инструмента; r -радиус алмазного выглаживателя. Для удобства расчетов была разработана компьютерная программа для вычисления параметра остаточных напряжения по формулам (7,8) на языке Visual studio 2017 C# [8]. ...

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Application of combined action methods for the surface layer of machine parts in science-intensive technologies

... In the assumed arrangement of the polar coordinate system (Fig. 1), the equation of the shaft contour [12], the bearing bush under the coating with a noncircular profile of base surface, and the polymer coating that copies a noncircular bearing bush profile can be expressed by (1) Let us assume that the viscosity characteristics depend on the pressure according to the law (2) The initial basic equations taking into account Eq. (2) are dimensionless equations of motion of an incompressible fluid for a "thin layer" and a continuity equation with the corresponding boundary conditions ...

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Study of Wear Resistance of a Radial Bearing Covered by a Polymer Coating with an Axial Groove on a Nonstandard Base Surface

... The overall change in average Ra was 45-63% over dry cutting and 23-43% over flood condition in comparison with MQL strategy. The fact that the heat rises as a result of the increase in Cs facilitate plastic deformation and flow of chip resulting in a decrease in Ra [35]. The highest value formed under dry condition was 1.35 μm. ...

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An experimental investigation of hybrid manufactured SLM based Al-Si10-Mg alloy under mist cooling conditions

... excellent corrosion, superior wear resistance, and fatigue resistance above 800-900ºC (than the other conventional materials) have contributed significantly toward its widespread applicability. [21,22] Besides, Inconel 718 retains its mechanical strength (at room temperature); at about 1375 N/mm 2 (tensile strength), which decreases by 20% of its value to about 1100 N/mm [2] at 650ºC. [23][24][25][26] As a result, most of the aircraft structures and critical temperature sections of Table 1. ...

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Machinability of Inconel 718: A critical review on the impact of cutting temperatures