bluuebunny/crossref_metadata_2025_split huggingface dataset:
The use of laser radiation for cutting of blind grooves and small-sized through cuts in thin-walled cylindrical bodies
Authors: Ratmanov V A , Gavrilov G N , Marinin E A , Beltukov A S , Razheva K V 
Published: December 2020

Abstract
The issues of optimization of technological parameters of laser treatment of radio engineering products for the formation of narrow through cuts and blind grooves at shell spheres are considered. The laser marker not performing such operations is used as the main technological equipment. The possibilities of a laser marker for getting narrow through cuts are shown in the paper. The modes of getting cuts at the samples made of D16T, 12Cr18Ni10Ti and steel 45 are selected and optimized.
Kinematics of ultrasonic processing
Authors: Rakhimyanov Kharis , Gileta Viktor , Samul Artem 
Published: December 2020

Abstract
The paper considers the kinematics of ultrasonic finishing processing with implementing the vibrations tangentially to the surface machined. The investigations are conducted on determining the main kinematic parameters of the method mentioned and their influence on the character of the tool trace on the machined part surface. The mathematical description of the motion trajectory of the deforming tool on the processed surface is presented. Its analysis allows us to find out the main principles of the formed trajectories and their relative location as well as the possibilities of increasing the processing efficiency.
Determination of the maximum grain width in fractions of grinding powders obtained by screening on test sieves
Authors: Nosenko V A , Aleksandrov A A 
Published: December 2020

Abstract
The article outlines the results of the study of the maximum and minimum grain width of black silicon carbide grinding powders with F60 grain size produced by Volzhsky Abrasive Plant, JSC, dispersed by fractions on test sieves. Grinding powders were sieved on a vibration stand in accordance with ISO 9284. Test sieves with the ISO 3310-1 cell size and tolerances were installed in the RO-TAP machine. The grain width was measured using electronic photos of the horizontal projection profile obtained by optical microscopy. Electronic images of grains were processed in specialized software. In each sample, at least 750 grains were measured, selected by quartering. It was found that the grinding powder made of black silicon carbide with a grain size of F60 meets the requirements of GOST R 52381 for grain composition. Visual inspection of the horizontal grain projection profiles showed that the grains are able to pass through the sieve cell, taking into account their possible orientation along the diagonal of the cell. The conditional pass-through size of the grain width in all fractions corresponds to the diagonal of the maximum average cell size of the upper sieve, taking into account the tolerance. The conditional non-passable size of the grain width corresponds to the lower limit of the average size of the cells of the lower sieve, taking into account the tolerance.
Analysis of geometrical parameters of hot-rolled rolling
Authors: Belskiy S M , Pimenov V A , Shkarin A N 
Published: December 2020

Abstract
The shape of cross-sectional profile is the most important characteristic of the quality of hot rolled steel, because it is accurately reproduced after subsequent cold rolling and thereby has a significant effect on the flatness of cold rolled strips. Traditional method to evaluating the accuracy of cross-sectional profile by geometric dimensions is the least squares approximation of hot-rolled strip thickness by second order polynomial. A number of parameters that characterize the macro-features of hot-rolled strips’ profile are found from the obtained second order parabola coefficients; this is wedge, convexity, displacement, coefficient of determination and the recently introduced saddle-shape coefficient, showing the presence of edge thickenings. Edge thickenings are formed due to wear of the work rolls in the areas corresponding to the edges of the rolled strips. An analysis of the existing geometrical parameters of the cross-sectional profile of the hot-rolled strips showed that with their help in some cases it is practically impossible to predict the flatness of cold-rolled strips. Analysis of the flatness of cold-rolled strips has identified four specific classes of cross-sectional profiles of hot rolled strips that have a significant effect on the shape of cold-rolled strips, and three of them negatively affect the flatness of cold rolled strips. Profiles with a concave middle and (or) near-edge areas lead to waviness, pike-shaped profiles cause warping.
Improving the accuracy of deep hole machining by diamond honing process in 41Cr4 steel parts
Authors: Dzhemilov Eshreb , Uysal Alper 
Published: December 2020

Abstract
This study presents the results of accuracy parameters during the machining of deep holes by diamond honing process in 41Cr4 steel parts. It was clarified that the use of diamond honing stones in the developed tool design helps to correct the geometric parameters of the hole obtained in the preliminary machining operations. The experiments showed that diamond honing is a productive process and provides high accuracy for the formation of roundness and straightness of deep holes in comparison with the internal grinding.
Influence of various types of spherocorundum on the performance of grinding wheels
Authors: Korotkov Vitaliy 
Published: December 2020

Abstract
The effect of introducing filled spherocorundum and hollow spherocorundum into the composition of grinding wheels on epoxy resin on the grinding coefficient, cutting ability, constituent cutting forces, temperature and quality of treated surfaces during implementation of a flat grinding operation is investigated. It has been established that replacing 40% of abrasive grains of electrocorundum in grinding wheels with filled spherocorundum with the same chemical composition and grain size reduces tool wear by 42%. It was also found that replacing 40% of abrasive grains with a hollow spherocorundum of similar grain size leads to a decrease in heat generation during grinding by 25%, as well as a significant reduction in deformations of the processed material during processing, compared with grinding wheels without adding spherocorundum.
Quality control of parts which were manufactured from polymeric composite materials with hybrid matrix with the application of method of infrared thermography
Authors: Kosenko Ekaterina , Baurova Natalia , Zorin Vladimir 
Published: December 2020

Abstract
This article contains the description of different polymer composite materials (PCM) with different types of hybrid matrices. One of the components of PCM’s hybrid matrix is hardened as the other one stays in its viscoelastic condition. The following materials are chosen to serve as viscoelastic components of hybrid matrix: technical wax compound, anaerobic and organosilicone polymer materials. The use of viscoelastic materials allows the enhancement of PCM’s stress-strain properties. This article also contains: the destruction mechanism of polymer composite materials with different types of hybrid matrices; the quality control process of products made of polymer composite materials with different types of hybrid matrices; the localization method of hybrid matrix viscoelastic components by using infrared thermography during product molding process. The results of quality control are shown as thermograms.
The role of dispersed phase in the formation of Ni – CEC
Authors: Vodopyanova S V , Mingazova G G , Fomina R E , Sayfullin R S 
Published: December 2020

Abstract
Composite electrochemical coatings make it possible to successfully solve many practical problems of surface hardening of structural parts, tooling and restoration of their wear parts. One of the factors influencing the structure and properties of composite coatings is characteristics of the dispersed phase (nature, concentration, dispersion). This paper presents the results of studying activation of titanium carbide by heat treatment method, which contributed to an increase in the main characteristics of nickel electroreduction. Barium sulfate is a promising dispersed material for composite coatings. This powder can be obtained with any dispersion as a result of an exchange reaction. In this work investigates the effect on the particle size of barium sulfate deposition conditions (time of mixing and pouring of reagents). The optimum conditions for obtaining barium sulfate are determined. Both powders can be used as a dispersed phase to obtain composite coatings with a nickel matrix.
Basic concept of tribocrystalochemistry of composition antifriction coatings
Authors: Shcherbakov I N 
Published: December 2020

Abstract
The article considers a possibility of introducing a new term, ‘tribocrystallochemistry of composite antifriction coatings’, which can be used in scientific terminology to explain friction and wear processes, modeling processes in the chemical nanoconstitution of composite antifriction coatings, modifiers and surfaces in contact with a composite antifriction coating, as well as technological aspects of receiving composites. The developed concept is based on the scientific knowledge of crystal chemistry, tribology, physical chemistry, tribochemistry, materials science, as well as theoretical and experimental research of the author.
Investigation of the resistance of protective coatings to fouling by the mollusk Dreissena polymorpha
Authors: Kostin Vasiliy , Orlov Sergey , Kochetkov Vladimir , Sokolova Natalya 
Published: December 2020

Abstract
Fouling of hydraulic structures with a wide variety of organisms is a worldwide problem. Fouling organisms not only increase the load on technological equipment, but also contribute to the occurrence of bacterial corrosion, including symbiotic. One of the methods of prevention is the use of anti-fouling coatings. Universal anti-fouling coatings do not exist, since the mechanisms of fouling are different. The main ways to create coatings are a decrease in adhesion or the use of biocidal additives. The authors investigated the mechanisms of fouling of the mollusk Dreissena polymorpha in fresh water. For the prevention of mollusk fouling and symbiotic biocorrosion, we analyzed the results of experiments using epoxy coatings containing a biocidal additive (bottoms from aniline production). Based on the experiments, it was concluded that epoxy compositions with biocides for the prevention of fusion of zebra mussel are ineffective. More effective are coatings with low adhesive characteristics, for example, fluoroplastic, but difficult to apply and quite expensive.
Evaluation of the effectiveness of using solid lubricants to reduce the wear of the brushes of electric AC machines
Authors: Isotov A I , Isotov S A 
Published: December 2020

Abstract
The article aims to study the influence of the major solid lubricant powder materials on the wear of electric brushes of universal LNA grinders in the process of rotaprint lubrication of the brush sliding path. The lubricating effect of substances was evaluated by the loss of mass and height of the brush products. Based on the results, the authors have defined the two most effective powder lubricants - epimol and molybdenum disulfide. The authors have studied how these lubricants influence the switching quality. They have come the conclusion that a lubricating film of the two most effective lubricants does not cause to a deterioration in the performance of the electrical machines. The use of rotaprint deposition of epimol and molybdenum disulfide on the slip track reduces the wear effect of the G-33MI brushes by more than 3 times.
Soil strengthening using fine composite binder based on carbide slurry
Authors: Panchenko A I , Kharchenko I Ya , Mirzojan M 
Published: December 2020

Abstract
It is shown that increasing the strength and impervious properties of strengthened soil massifs, keeping at the same time the low cost, is possible by use of injecting compositions based on the fine composite mineral binder – bio-silicon oxide together with the carbide slurry. The carbide slurry has fine particles size less than 10 μm. Aqueous suspensions based on bio-silicon oxide with the carbide slurry have required workability due to low viscosity and sedimentation of not more than 1.2%. Such suspensions had a sufficiently good penetrating ability and allowed transforming of the sandy soil into ground concrete in 28 days. Strength values of 12.5 MPa and 11 MPa were achieved using lime and carbide slurry, respectively. A distinctive feature of the carbide slurry application is that it is a waste product It also solves the environmental problem.
Burnout resistance assessment of air tuyere in blast furnace
Authors: Skripalenko M M , Kobelev O A , Sayfullayev S D 
Published: December 2020

Abstract
To assess the burn resistance air tuyere in blast furnace using the finite element method (axisymmetric problem), DEFORM-2D software was used. Ceramics with a slurry coating applied to it was used as thermal insulation for protection against air tuyere burnout. The resistance to air tuyere burnout with the selected thermal insulation on its outer surface is estimated by calculating the stress intensity.
Searching for a rational schedule of a burnishing process with superimposition of ultrasonic vibrations
Authors: Martynov E M , Zhelezkov O S 
Published: December 2020

Abstract
An ultrasonic finishing treatment unit was used for experimental researches to find effective burnishing modes. Based on the research findings of an obtained surfaces microtopography the following parameters were determined: Ra – arithmetical mean deviation of the profile and Pc – average number of profile end points per 1 cm of the surface length, by which the quality of treatment was evaluated.
The quality study of composite galvanic coatings, obtained using electroerosive powders
Authors: Ageeva E V , Khardikov S V , Altukhov A Yu , Novikov A N 
Published: December 2020

Abstract
Actual is the task of creating the so-called composite galvanic coatings (CGC), introducing hardening additives in the form of finely dispersed powder into the solution. During the experiments, a coating was applied using a standard composition, and then a coating with the addition of EED powder in an amount of 5 g/l of solution. The microstructure of the obtained coatings was investigated using a Quanta 200 3D scanning electron microscope. Testing the hardness of the samples along the transverse section was carried out using the DM – 8 automatic microhardness analysis system. It was experimentally established that the composite galvanic coating has a clear boundary with the substrate and a transition friable layer of up to 30 μm. In this case, the presence of vertical cracks up to 50 μm in size was noted. It was shown that a composite coating obtained with the addition of an electroerosive powder in an amount of 5 g/l of solution has a microhardness 12% higher than a coating using a standard electrolyte composition.
Calculation on seismic resistance of box-shaped structures of large-panel buildings
Authors: Usarov M K , Mamatisaev G I 
Published: December 2020

Abstract
The article is devoted to the theoretical calculation of the box-shaped structure of large-panel buildings on dynamic effects, taking into account the spatial work of transverse and longitudinal walls under dynamic effects, set by the base displacement according to a sinusoidal law. The problem is solved using the finite difference method.
Morphology features of molybdenum carbide synthesized by DC arc discharge plasma in air
Authors: Vassilyeva Y Z , Pak A Y , Yakich T Y , Mamontov G Y 
Published: December 2020

Abstract
This paper presents the XRD and SEM analysis results of molybdenum carbide powder synthesized by DC arc discharge plasma in air. The regularities of the phase composition distribution in the reaction zone are revealed. It was determined that in the arcing zone the initial molybdenum is completely processed, the hexagonal molybdenum carbide has the greatest yield. As a distance from the arcing zone increases, the fraction of cubic molybdenum increases, orthorhombic molybdenum carbide and graphite phases decreases. According to SEM data, the features of element composition and morphological types of samples collected from different parts of the reaction zone were revealed.
Optimization of technological modes for moulding composites using vacuum infusion technology
Authors: Maung Pyi Phyo , Thant Kyaw Phone , Malysheva G V 
Published: December 2020

Abstract
The aim of this study is to optimize the resin infusion time of carbon fiber reinforced plastic laminates depend on temperature gradient using vacuum infusion technology. At room temperature the resin infusion time of moulding large composites part cause production slowly. So the infusion time must be considered in the production of large composite part. We can decrease the resin infusion time by heating the mould with greater temperature logically. But there will be thermal damage in finished composites product. In this paper we studied the resin infusion time and proper temperature gradient without losing its composites properties. This study leads to the development of rapid production in vacuum infusion technology.
Models of intelligent CAD in engineering divisions with training elements
Authors: Burdo G B , Bolotov A N 
Published: December 2020

Abstract
The paper considers one of the issues of automated process control system for machining processes. The proposed approach is based on the implementation of such elements as the information accumulation, analysis, generalization, and knowledge elicitation. Such method allows creating new technological patterns, so it means that there are some elements of artificial intelligence in an automated system. The signs that form new knowledge are identified signs that correspond to a certain level of technological process decomposition. In order to increase the reliability of obtaining quality solutions, it is planned to involve experts for the most critical situations. Currently, the proposed method is undergoing experimental testing.
Determination of maximum productivity the technological system of multi-product chemical plant
Authors: Karpushkin S V , Krasnyanskiy M N , Malygin E N , Mokrozub V G 
Published: December 2020

Abstract
The mathematical formulation of the problem to determining the maximum productivity of a fixed hardware design for a technological system of multi-product chemical plant for a specific product is proposed. The algorithm for solving this problem involves checking and ensuring that the conditions for the suitability of the apparatus stages of the system for processing batches of the specified product are met. An example of the problem solution for a specific multi-product chemical plant is given.
About one method of modeling high-gradient temperature fields in the welding of shell structures made of carbon and high-alloy structural steels
Authors: Mironova L , Nigay R , Nigay E 
Published: December 2020

Abstract
A method is proposed for modeling high-gradient temperature fields in welding processes of shell structures made of carbon and high-alloy structural steels based on the graph-analytical method for studying the behavior of a function determined by the differential heat equation. The method consists in approximating a family of interpolating cubic splines constructed from temperature measurements at the reference points of the welded contour during the welding process. The analytical dependences of the distribution of temperature fields due to the design features of the welded joint and the welding process are obtained.
Dynamics of the beam laying on the elastic basis of the Pasternak model carrying the moving constant load
Authors: Erofeev V I , Lisenkova E E , Malkhanov A O , Tsarev I S 
Published: December 2020

Abstract
A system consisting of a guide along which a heavy mass moves is considered. A guide is considered to be a homogeneous beam lying on the elastic base of the Pasternak model. The features of bending wave generation by a moving load are studied. Based on the general solution of the problem, an expression is obtained for the pressure of the waves (the forces of resistance to motion).
Target training of technologists in a virtual enterprise environment
Authors: Cherepashkov Andrey A , Voronin Valeriy N , Sharaukhova Anastasiya G 
Published: December 2020

Abstract
The article discusses the project personnel’s problems of CAD training integrated into complex automated systems. To accelerate adaptation and development of CAD skills among users of CAD systems in a digital design and production environment, specialized educational and research virtual enterprises (ERVEs) are created. The target training of engineering technologists is considered in detail. The structure and composition of means of informational and methodological support of ERVEs are substantiated. The use of ontological analysis for constructing optimum trajectories for training specialists in a virtual educational environment is proposed.
CAD-technology is a tool for teaching bachelor students industrial technology
Authors: Danilova E A , Antropova T V , Skotnikova A A , Borodulina S V 
Published: December 2020

Abstract
The vast majority of special disciplines in technical fields are studied bachelor students over one semester. This time is not enough for developing comprehensive knowledge of industrial technology and product forming processes. In addition, visit to training machine laboratories does not always allow student to fully explore the features of a particular technological process. As a problem solution, students may use CAD-technology in practical classes for computer simulation of various technological processes. Methods for solid body model constructing should correspond to the workpiece forming method in production environment. Such tasks would allow students to understand better the technology and features of manufacturing workpieces on different machines. This is especially important in the conditions of distance learning, when students have no opportunity to personally visit industrial laboratories and perform work on special equipment.
Simulation of operation of a flow sensor of variable pressure differential
Authors: Kharitonov Alexander , Busigina Elena , Nikitina Olga , Maslennikov Ygor 
Published: December 2020

Abstract
In operation the results of study of influencing of uniform depositions and residual deformations of a diaphragm are introduced flow sensor of variable pressure differential on magnitude of coefficient of the expiration. The results are obtained by a numerical modeling of operation of the sensor by finite element method with usage of the program Ansys. The move of air in the channel of a constant cross-section was modeled. Statistical treating and analysis of the obtained results are fulfilled by facilities of the program Statistica Enterprise. The quantitative estimation of influencing of each of the indicated factors on magnitude of coefficient of the expiration is given.
A study of the cultivator suspension’s strength based on its solid model in Autodesk Inventor Professional
Authors: Telegin V V , Telegin I V 
Published: December 2020

Abstract
The article is devoted to the study of the stress-strain state cultivator suspension in the Autodesk Inventor Professional program. To solve this problem, a solid-state suspension model has been developed. Four schemes of the application of external forces and restrictions on the suspension parts movement are described, which describe the condition of the cultivator in critical situations - the suspension’s paw clings to an obstacle. The calculations were performed in the “stress analysis” environment. The obtained results made it possible to justify the possibility using two of the four considered schemes to formulate a plan for a comprehensive study of the cultivator’s health when various changes are made to its design. The ultimate goal of design changes is to reduce metal consumption and the use of more affordable materials in the manufacture of the cultivator frame.