bluuebunny/crossref_metadata_2025_split huggingface dataset:
Formation of film antifriction coatings on the friction surfaces of machine parts
Authors: Gorin A V , Rodichev A Yu , Tokmakov N V 
Published: January 2020

Abstract
The article presents a study of the adhesion strength of film anti-friction coatings. The process of a film anti-friction coating formation is described. An experiment to determine the adhesion strength of a film anti-friction coating is considered. In the course of the experiment, a number of samples of different roughness were used on which an anti-friction coating was applied. The thickness of the coating was controlled by a thickness gauge. Conducted a qualitative assessment of the adhesive strength of the coating with the base metal. Conclusions about the strength of adhesion, its dependence on surface roughness and initial surface treatment are made.
Cutting ability of abrasive grains in the processing of billets of plastic materials
Authors: Unyanin A N , Khazov A V 
Published: January 2020

Abstract
When processing billets of plastic and adhesive-active materials, the loss of the cutting ability of the grinding wheel is mainly due to the adhesion of the workpiece material particles to the abrasive grains (AG). To develop recommendations aimed at reducing the intensity of adhesion, it is necessary to identify the relationship of the intensity of this process with the physical and mechanical properties of abrasive grains. The dependence for the calculation of the voltage at the contact area of the clip with the AG after the AG out of contact with the workpiece is obtained. Numerical simulation of local temperature when microreserve (scratching) samples of steel 3KH3M3F abrasive grains of various materials. According to the obtained dependences, the deformation of the excrescence and the stresses resulting from this deformation were calculated, and the ones acting on the connection of the 3KH3M3F steel excrescence with grains from materials having different coefficients of linear expansion. It is established that with the increase in the difference of the coefficients of linear expansion of the billet materials and AG, the stresses that contribute to the separation of the excrescence from the surface of AG increase, which allows to predict a lower intensity of sticking of the billet material to AG from such materials. It is established that with the increase in the difference of the coefficients of linear expansion of the billet materials and AG, the stresses that contribute to the separation of the excrescence from the surface of AG increase, which allows to predict a lower intensity of sticking of the billet material to AG from such materials. Experimental studies, during which micro-cutting of samples by single abrasive grains was carried out, showed that AG from elbor wear out and are salted to a lesser extent. Elbor has the maximum value of the coefficient of thermal conductivity among the tested materials and to a lesser extent wears out, so the local temperatures when cutting grains from Elbor are minimal. In addition, the difference between the linear expansion coefficients of the material excrescence and elbor has a maximum value. Therefore, at the site of contact AG from elbor with the adhesive there are stresses that contribute to the separation of the excrescence from this surface, which is the reason for the small value of the coefficient of salting AG from elbor. As a result, AG was ranked from various materials according to the criteria characterizing their wear and salting. Confirmed identified analytically the relationship between the intensity of brining of grain with a coefficient of linear expansion and thermal characteristics of the materials AG.
A progressive method of mounting machine parts on the shaft
Authors: Arbuzov M O , Nekrasov A Ya , Sobolev A N 
Published: January 2020

Abstract
In mechanical engineering, various methods of fastening the hub to the shaft for the transmission of torque are widely used. However, the methods used are not devoid of a number of disadvantages inherent in varying degrees for each of them. The authors proposed a constructive solution for reliable mounting of the hub on the shaft, which provides operational control of the axial and angular position of the part, and also developed a software application that allows the calculation of the tightening force depending on the connection parameters.
Comparative analysis of the economic efficiency of using engine units on an industrial tractor of a 10 tons thrust class
Authors: Lomakin G V , Dyakonov A A , Kondakov S V 
Published: January 2020

Abstract
Creating competitive technology requires innovative solutions from the manufacturer. One of such solutions can be the use of power plants on an industrial tractor that simultaneously meet high technical, economic and environmental indicators. In this regard, the article presents a comprehensive analysis of the characteristics of the power plants under consideration, using the example of an industrial tractor with a thrust class of 10 tons.
Integrated risk management of petroleum engineering enterprises
Authors: Deberdieva E M , Frolova S V 
Published: January 2020

Abstract
This article discusses the current problems of the functioning of oil engineering enterprises. The emergence of new risks inherent in oil engineering is shown, which is due to the intensified transformation of the external and internal environment, the complexity of production systems, competition among machine-building enterprises, their various levels of development, which ultimately determine material consumption, energy consumption of gross domestic product, labor productivity, industrial safety and defense of the state. The results of a study on the management of specific integration risks are presented. At the same time, the classification of risks inherent in integration structures was carried out, their assessment was based on the use of expert assessment method, hierarchy analysis method, ALARA risk ranking matrix. A program has also been proposed in order to increase the effectiveness of managing the identified specific risks of integrated oil engineering enterprises by developing measures to minimize such risks.
The structural model of automated leveling system for a construction machine
Authors: Siuhin Alexandr , Zverev Mikhail , Balashov Pavel 
Published: January 2020

Abstract
Realization of road construction works at a high-quality and modern level is associated with significant requirements for accuracy and speed. In the manual mode, it is no longer possible to carry out the leveling process in accordance with these requirements. Therefore, a topical task is to automate the process of leveling the roadway using modern information technologies. Automated control systems for road construction equipment can improve the quality of performed work on terrain profiling and increase the life of the roadway. The article presents a structural model of the automated leveling system for the grader, reflecting the processes of interaction between subsystems and the relationship between them. The obtained results can be used to develop hardware and software systems for the control of road-building equipment.
Virtual enterprises in implementation projects of integrated machine-building CAD systems
Authors: Cherepashkov A A , Samoylov P A 
Published: January 2020

Abstract
The article discusses the problems of introducing CAD systems integrated into complex automated systems. One of the main reasons for failures and low efficiency of projects for implementation of automated systems are personnel problems. To accelerate implementation of the pilot project and adaptation of CAD systems’ users, it was proposed to create specialized educational project virtual enterprises (EP VE). EP VE is formed within the implementation project as a kind of digital twin of a real enterprise on basis of authorized training centers, including those created by companies developers in supporting universities.
Forecasting of the residual resource of automotive alternators
Authors: Puzakov A V 
Published: January 2020

Abstract
The urgency of the problem under study is caused by the imperfection of methods for diagnosing automotive alternators, which do not reveal hidden defects, as a result of which the alternator failure is sudden and entails costs due to vehicle downtime in repair. The aim of the study is a method for predicting the residual resource of automotive alternators, built on the results of diagnosing and assessing the operating conditions of an automobile. Analytical expressions describe the dependence of the intensity of an alternator resource on the ambient temperature and operating time, considering its technical condition at the time of diagnosis and the degree of its change under the influence of factors operating conditions on the test run. The theoretical results were confirmed by experimental measurements. The presented results can be used for the full implementation of the resource of automotive alternators in the conditions of road transport enterprises.
Economic and financial aspects of the organization in metal-processing enterprises in the modern Russian economy
Authors: Klyueva Irina S , Varaksa Anna M 
Published: January 2020

Abstract
The article is justified the significance of the manufacture of machinery and equipment. Consider how the situation has changed in this industry after the transition to a market economy. The key financial ratios are given and the Herfindahl-Hirschman index is calculated. To conduct a study were used such methods as induction, analysis and econometric methods of calculation. The results of the study showed that the situation in the Russian machinery-producing industry deteriorates from year to year, which could lead to the bankruptcy of enterprises and a further lag in Russian industry.
Investigation of impact of cutting oils on formation of surface defects during grinding
Authors: Nosov N V 
Published: January 2020

Abstract
The paper proposes a new approach of evaluating the quality of cutting oils through the study of defects emerging on raceway surfaces of instrument bearings during profile grinding with use of different cutting oils. It has been also established that the wear of rubbing surfaces of bearings exposed to sliding friction generally depends on presence of defects and relates to fatigue fracture of the surface layer caused by repetitive thermomechanical exposures. Moreover, the wear rate depends on sizes and shapes of defects which act as stress raisers and so are of primary importance. Many experiments described in literature confirm that noise and vibrations directly depend on presence of defects on working surfaces of rolling bearings.
Method of quality assessment of design of complex objects in mechanical engineering
Authors: Akhtulov Alexey , Ivanova Lyudmila , Charushina Elena 
Published: January 2020

Abstract
Methods for assessing the quality of the design processes of complex technical products are considered, taking into account the main quality indicators for a reasonable choice of the most acceptable option from among competing ones. Methods for assessing the impact of individual stages of product design are described, and methods are proposed for determining the accuracy included in the selected indicator.
Design of elements of imitator’s construction of physical loads of software and hardware platform of training complex
Authors: Obukhov Artem , Dedov Denis , Nikitin Dmitriy 
Published: January 2020

Abstract
Training complexes are an effective and modern tool for training personnel working in conditions of increased risk to human health and life, which allow minimizing accidents and material damage. One of the actual problems of the use of simulators is the lack of realism of user movement in the virtual world. In order to solve this problem within this study, the task of a simulator design of physical loads is considered. The developed prototype simulator allows a comprehensive and realistic training of personnel in normal and emergency situations. The article describes the basic structure and functionality of the simulator, the geometric dimensions of the rolling belt are determined. The dependencies of determining the size of the drive shaft and the kinematic parameters of the drive are scrutinized. The listed parameters define the actual position of the student, dynamic loads (magnitudes of speeds, accelerations and torques) during the simulation of working and extreme situations. The obtained results will be applied for the physical simulation of the physical loads of the software and hardware platform of the training complex.
Model of processing accuracy prediction with consideration of multi-stage process of circular grinding with axial feed
Authors: Alsigar Masar , Pereverzev Pavel , Almawash Aziz 
Published: January 2020

Abstract
The article describes the solution of the problem of increasing the efficiency of a circular grinding with CNC by applying a model of processing accuracy prediction which considers the multi-stageness of the circular grinding process with axial feed during designing and optimization stages of control cycles for the radial and axial feeds. High productivity of external circular grinding operations with axial feed is ensured by simultaneous control of automatic stepwise cycles of radial and axial feeds in different sections of the shaft.Computed models have been developed; for given grinding cycles of radial and axial feed they allow to determine values of all main error types which are caused by the presence of initial radial run-out of the billet and elastic deformations of the technological system in three shaft sections (in reverse and non-reverse zones): diameter error, circularity deviation, radial run-out, cylindricity deviation, longitudinal section profile deviation, and total radial run-out.
Systematization of rolling-stock parameters in piggyback systems
Authors: Tsyganov A V , Osintsev N A 
Published: January 2020

AbstractThe growth of the external trade between countries makes it necessary to modernize the transport system and realize intermodal technologies that provide effective cargo delivery. Analysis of using piggyback transportation abroad and in Russia is done in this article. Parameters system of rolling-stock in piggyback transportation is proposed. Using the proposed system will enable the compatibility assessment of vehicles that are used in shipment organization. And it will help to choose the most appropriate option of shipment using piggyback transportation.
The stressed state of a titanile shell operating in a medium with hydrogen
Authors: Emelyanov I G , Mironov V I , Ogorelkov D A , Hodak A S 
Published: January 2020

Abstract
Improving reliability in the operation of equipment operating in a water-containing environment is associated with solving the problem of hydrogen embrittlement of metals. In the absence of a rigorous physical theory, it becomes necessary to predict the carrying capacity of various structures based on the available experimental data showing a decrease in the mechanical properties of materials in contact with hydrogen. In this paper, a solution is given to a physically nonlinear problem of determining stresses in a titanium shell. When integrating resolving equations, the method of SK Godunov’s discrete orthogonalization is applied. Due to the fact that hydrogen most noticeably reduces the plastic properties of metals, the construction has revealed a dangerous point with a maximum intensity value of tangential stresses. The regularities of changes in the intensity of shear deformations at the dangerous point of the shell during an emergency pressure increase in the apparatus have been found. It is shown that an emergency pressure increase in the shell may lead to the appearance of plastic deformation zones, and the effect of hydrogen is manifested in the reduction of the breaking load.
Research of surface hardness after electrical resistance deposition with a wire
Authors: Ponomarev A I , Plakhov S A 
Published: January 2020

Abstract
The article presents results of experimental research of parameter’s impact on mode of electrical resistance deposition with a wire of 65Mn steel on hardness properties of surface layer. Also the research contains structures of heat tempering zones of metallographic exploration of surface layer after electrical resistance deposition with a wire of 65Mn steel. Finally, there are provided recommendations how to reduce square of local softening after electrical resistance deposition with a wire.
Determination of oil-water emulsions separation efficiency in the separator with a vortex flow
Authors: Madyshev I N , Dmitriev A V , Vin Dang Suan 
Published: January 2020

Abstract
This paper deals with the study of oil-water emulsions separation processes in the separators with a vortex flow. The authors developed a new design of separator, consisting of Π-shaped elements and, when the liquid moves between these elements, the centrifugal force appears, leading to the layering of oil-water emulsion. The paper includes the numerical studies on the flow structure determination, conducted by means of software package ANSYS Fluent, and allowing us to evaluate the design of separators to achieve the high separation efficiency. It was found that an increase in the actual flow rate, and, as a consequence, the Reynolds number, as well as the height of device lead to an increase in the emulsion separation efficiency. At the same time, the oil concentration at the device outlet can reach 99.9%. The developed device allows to increase significantly the throughput capacity of apparatuses for the oil-water emulsions separation, widely used in the oil-and-gas extraction industry.
General principles and search strategy for rational structure types reconfigurable production systems
Authors: Kapitanov A V , Mitrofanov V G 
Published: January 2020

Abstract
The article considers selection of rational production system (PS) type. The selection method is described that is based on establishing the structural attributes of an inflow of orders, creation of production system typical structures bank, defining the shared boundaries between typical structures in metric space and development of metrics calculation approaches. The article shows that selection of rational PS type implies the selection of PS technological structure and defining its optimum automation level.
Geometrical identification of invisible defects in structural elements basing on digital image correlation data
Authors: Apalkov Andrew A , Odintsev Igor N , Usov Stanislav M 
Published: January 2020

Abstract
The paper addresses an experimental-calculational technique intended to determine geometrical parameters of invisible crack-like defects in thin-wall structural elements. Object deformation response to low trial loading is used as baseline data for assessment. The response is recorded using the digital image correlation method. Further analysis consists in minimization of differences between experimental findings and serial model calculations. The description of the approach is carried out on the example of a test specimen in the form of cylindrical shell (tube section) with a non-through crack simulator on the inner surface. The expected displacement fields for different particular cases are calculated using the finite element method.
Evaluation of machinery-building enterprises activity in the concept of sustainable development
Authors: Kuznetsova E Yu , Kuznetsov S V , Podoliak O O 
Published: January 2020

Abstract
The global idea of sustainable development as a Trinity of economic, social and environmental development priorities confirms its relevance at the level of the country, region and enterprise. An industrial enterprise can and should be responsible for environmental performance in terms of ensuring the safety of its production technologies and for implementing social objectives for its employees as a socially responsible employer. In order to monitor the implementation of the concept of sustainable development, it is necessary to develop a system of target indicators by which to assess the degree of achievement of the goals not only at the state level, but also at the level of the enterprise - the key link of the economic system. To implement the monitoring of sustainable development, an attempt is made to ensure the "cross-cutting" nature of sustainable development indicators – the presence of similar indicators at all levels of economic development – from the enterprise to the level of the region and the state. Approbation of the author's technique is made on the example of industrial enterprises of machine-building profile.
Microstructure effect of weld joint heat affected zone on the temperature velocity factor of ultrasound
Authors: Gonchar A V , Kurashkin K V , Klyushnikov V A 
Published: January 2020

Abstract
The effect of temperature on the longitudinal wave speed in the heat-affected zone of the weld joint of structural steel 20 is investigated. The heat-affected zone is the most dangerous place where the stress-strain state is realized and a gradient of physical and mechanical properties is observed. As a rule, it is in the heat-affected zone that the structures are destroyed. The structural state of the heat-affected zone has a significant effect on the temperature dependence of the elastic wave velocity. As a result of the research, numerical values of the temperature-velocity factor for longitudinal ultrasonic waves in steel 20 for the heat-affected zone and the base metal were obtained. In the future, the dependencies can be used to develop methods for determining material damage by the ultrasonic method.
Determination of the particle deposition efficiency value in a granular and open cell foam filter
Authors: Soloveva O V , Solovev S A , Yafizov R R 
Published: January 2020

Abstract
We constructed a model of a granular filter with spherical granules with a diameter of dc
= 5 mm and a porosity of ε = 0.44, as well as two models of a highly porous cellular filter. The first model has a porosity equal to the porosity of the granular filter, and the second model has a surface area equal to the surface area of the granular filter. A numerical and experimental study of the change in pressure drop depending on the average filtration rate was carried out; the results are in a good agreement. In the case of porosity of the granular filter. In the velocity field found, the trajectories of the particles are calculated, by which the efficiency of particle deposition is determined as the ratio of the number of particles deposited in the filter to the total number started. The deposition efficiency curves are the closest for models with a same filter surface area. The surface area of the material is the determining parameter when choosing a filter.
The use of computer vision for automated control of gypsum feed and conveyor belt movement in the production of a gypsum plasterboard
Authors: Kotyuzanskiy L A , Chetverkin N V , Ryzhkova N G 
Published: January 2020

Abstract
The paper presents a description of the gypsum dough spill analysis method on the basis of computer vision for automated control of gypsum feed and conveyor belt speed. The task of computer vision is to control the form of gypsum dough spill on the basis of optical analysis of video data in real time.
Model of fragile destruction of metal constructions at reduced temperatures
Authors: Kabaldin Y G , Khlybov A A , Anosov M S 
Published: January 2020

Abstract
The paper presents the results of studies of metals with different types of crystalline structure in a wide range of low temperatures. Based on the data obtained, a model of brittle fracture of metals at low temperatures is proposed. The relationship between the lattice parameter of metals and the temperature of a viscous-brittle transition is established. A quantum-mechanical simulation of the effect of temperature on the lattice parameter has been carried out. It is shown that a decrease in the lattice parameter is observed with decreasing temperature.