bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modeling a repair machining of a rotary kiln tire
Authors: Duyun T A , Shrubchenko I V , Hurtasenko A V , Goncharov M S 
Published: July 2019

Abstract
The paper considers the process of edge cutting machining applied to the running surface of a defective-form kiln tire with portable machines without shutdown of cement clinker production. Conditions are formulated for geometry generation; related changes in reference surfaces are defined. These features are integrated into an algorithm aimed at minimizing deviation of the kiln tire from circular profile when modeling its repair.
Economic aspects of reactive power compensation at gas-chemical plant
Authors: Vildanov R G , Khismatullin A S , Luneva N N 
Published: July 2019

Abstract
The use of energy saving technologies, reduction of losses of electric power and the electric power are actual tasks of modern power industry. The cheapest and at the same time the most effective means of increasing the technical and economic indicators of electrical systems is reactive power compensation. The paper considers three variants of reactive power compensation: installation of high-voltage capacitor banks; installation of low-voltage capacitor banks); overexcitation of synchronous machines. The comparative analysis was conducted on models compiled in the program MATLAB Simulink. The costs of generation and transmission reactive power using synchronous motors were defined. The costs of generation and transmission reactive power using low-voltage capacitor banks were defined.
The investigation of magnetization reversal loss sensor
Authors: Vildanov R G , Khismatullin A S , Luneva N N 
Published: July 2019

Abstract
A sensor was developed to measure the losses in the magnetization reversal of materials. Expressions for the magnetic flux in the sensor core and the sensitivity for the amplitude processing of the signal from the magnetization reversal losses are obtained. A vector diagram of the currents and voltages is plotted, along which the phase shift of the signal from the magnetization reversal losses is determined. It is established that the phase shift of the current is due to two factors. The formula of the total phase shift from both factors is obtained. The total phase shift is directly proportional to the induction in the product and the mass of the magnetized zone, and hence the volume of the defects. It is shown that the total phase shift is directly proportional to the mass of the magnetization reversed zone, and hence to the volume of the defects. The dependence of the signal phase of the sensor on the mass of the metal in the sensor zone is obtained.
Current status and operating principles of hydrogen power plant in urban transport
Authors: Kulikov K I , Schurov N I , Yaroslavtsev M V , Spiridonov E A , Langeman E G 
Published: July 2019

Abstract
The article describes the current status of hydrogen power engineering and electric transport as the main force for a branch development. Modern transport industry turns to the environmentally friendly hydrogen technologies and an optimization of energy resources consumption. The development of new high-tech industries is very important in terms of requirements for environment safety and an emissions level. Gradual development of hydrogen fuel vehicles will reduce a cost of production of one vehicle and make them attractive for using in countries around the world. The rising demand for hydrogen vehicles forces the science to improve the technology of conversion of hydrogen energy into electrical. The development of new control systems for such vehicles, which have high requirements for a fuel quality and the optimization of power plant load, is also stimulated by a demand for hydrogen vehicles.
Multi-pulse rectifier as a means of electromagnetic compatibility improvement in three-phase networks with sliding delta winding transformer
Authors: Olhovskiy V Y , Myateg T V , Atamanova O S 
Published: July 2019

Abstract
The article is devoted to the principle of creating a technical means to improve the electromagnetic compatibility of three-phase rectifiers in AC supply networks. The principle of constructing the circuit solution of this technical device is described and the calculated expressions for its implementation are presented on the basis of transformer converters of the number of phases and the connection of their windings into a “sliding delta”. This solution allows implementing a controlled mode of increased equivalent pulsation of rectification and providing high-energy performance in the supply network by regulating the phase shifts of three-phase voltages supplying three-phase rectifiers, which is confirmed by a series of model experiments.
Research of the impulse forces interaction in synchronous electromagnetic impact machines
Authors: Neyman L A , Neyman V Yu 
Published: July 2019

Abstract
The paper describes the process of the impulse forces interaction in the synchronous electromagnetic impact machines. The research issue is an actual one as it is necessary to estimate kinetic energy loss in mechanical systems of synchronous electromagnetic machines for accurate synthesis of mathematical models. The relationship between the kinetic energy transferred to deformed medium and kinetic energy returned to the mechanical oscillatory system is determined. The second one depends on deformed medium properties and the impact systems parameters. The new dependences reflecting the head bounce factor and the head initial velocity with kinetic energy loss on deformation and recovery of incomplete impacting volumes are established.
Analysis of transient and steady-state processes in multi-pulse rectifiers by the finite-difference method
Authors: Neyman L A , Neyman V Yu , Elanakova V A 
Published: July 2019

Abstract
Rectifiers are featured by periodic processes depending on the source frequency and rectification circuit. The output current of each diode is discrete even if the load current is continuous. The relationship between the current values at the end point of the periodical working cycle of the rectifier is determined by the finite-difference method. The difference equations describing the working cycle contain constant coefficients depending on the rectification circuit type and load parameters. The analytic dependence of the current on the lattice function argument is obtained. The dependences of the current on the lattice function argument are stated for the eight-pulse rectifier with the active inductive load. The load current envelope reflects the type of the transient process and makes it possible to compare rectification circuits and to analyze steady-state processes.
Rational design of low-tonnage technological complexes for fine and ultrafine grinding of materials
Authors: Perelygin D N , Boichuk I P , Gorlov A S 
Published: July 2019

Abstract
To solve the problem of obtaining superfine materials, a mathematical model of materials dispersion is proposed. The model uses the Focker-Planck equation to determine the probability density. The physical density of the probability density is interpreted as a differential characteristic of the composition of the ground material. The closure is performed using the equations of material balance and limitations that ensure the performance of low-tonnage technological complexes. Criteria for the controllability of the grinding process are proposed. These criteria take into account the random nature of the processes and the existing disturbances in the chamber of the vortex-acoustic disperser. In this case, the vortex-acoustic disperser in the working range of changing its parameters is considered as a complex physico-mechanical system. The developed mathematical model makes it possible to study the laws of the grinding process in a vortex-acoustic disperser. The model also makes it possible to find the optimal design and operational parameters of the disperser.
Centrifugal unit of combined method of grinding for mechanoactivation of technogenical materials
Authors: Uralskij V I , Uralskij A V , Sinitsa E V , Uralskaja L S , Karatsupa S V 
Published: July 2019

Abstract
Analysis of the raw material resources of the Russian Federation has shown that the most large-tonnage raw material is the waste of wet magnetic separation (WMS), formed during the beneficiation of ores. A complex of studies on the use of WMS wastes showed that their most effective use is to mechanically activate a mixture of wastes and cement and to prepare a new class of binders — finely ground multi-component cements and binders with low water requirements. To carry out complex experimental studies, taking into account the existing requirements, an experimental centrifugal grinding unit (CGU) with specified trajectories of the grinding chambers was chosen. The developed grinder is intended for mechanical activation of fragile materials with different physical and mechanical properties by the combined method of grinding (dry and wet), both in periodic and in continuous modes. Analysis of the results of experimental studies indicate the effectiveness of the use of centrifugal grinding unit for the wet method of grinding and also allow us to conclude about the significant superiority of wet grinding for the production of fine raw materials.
The results of studies of the tunneling rescue complex for coal mines
Authors: Yu Urazbakhtin R , Yungmeyster D A 
Published: July 2019

Abstract
The object of study was the rescue complex for carrying out high-speed workings of small section, the main task of which is to evacuate miners caught in an accident. The aim of the work was to determine the parameters of the rescue complex, part of which is a mechanized walking support. Laboratory studies of walking support parameters were carried out to determine the actual value of the coefficient of resistance to movement (kres). It is established that the movement force of the section-jointed walking lining is based on the mass of its parts, size and physical and mechanical properties of the side rocks and roof, expressed in the steady state by an exponential dependence on the time and step of the advance. And the experimental value of the drag coefficient of the walking lining is in the interval of 3-5.
Ferroalloy industry waste processing
Authors: Cherednichenko M V , Zuev S P 
Published: July 2019

Abstract
In order to develop a technology and equipment for remelting waste from the ferroalloy industry, the Yurga ferroalloy plant gives 1500 kg of ferrosilicon waste to “Sibelektroterm” for experimental smelts and formulation of technical requirements for new remelting equipment. The findings of these operations are presented in this article. The results of experimental ferroalloy waste processing smelts in a direct-current furnace with the power of 140 kW are examined; parameters of three-phase electric furnaces of alternating current with power 0.63-6.3 MV·A and technologies of ferroalloy waste processing are examined. In addition, original characteristics of the waste are considered. Remelting of ferrosilicon waste in three-phase alternating current furnaces is considered.
Obtaining functional dependence of friction coefficient of soil on steel
Authors: Alekseev V V , Avrelkin V A , Vasiliev S A 
Published: July 2019

AbstractThe development of theoretical approaches to the substantiation of the water-physical properties of soils, which determine the favorable mode of functioning of tillage machines and units, and the improvement of methods for measuring hydrophysical parameters, is an actual problem of agricultural science. The intensification of technological processes in some cases leads to irreversible changes in the soil profile. The results of the research can be substantially expanded by modeling the hydrophysical properties of the soil and studying the water and air regimes of the soils. In accordance with this, an important task is the theoretical justification of the functional dependence of the frictional force in the soil on its specific surface, porosity and moisture for determining the moisture ranges when which meliorative measures are environmentally friendly and least energy intensive. The methodological basis was the fundamental and applied foundations of soil hydrophysics. The study of the modes of operation of the tillage machines (crumbling / speed) on various types of soils allowed one to determine the most effective moisture intervals at which, with an average fuel consumption from 4.1 to 17 l/ha, it is saved from 0.16 to 0.68 l/ha. This allows one to reduce fuel consumption by 5-7 % and to provide the best mechanical effect on the soil. The application of these methods was based on the use of modern software packages for processing the results of experiments conducted in laboratory and field conditions.
Surface hardening of structural steel by cathode spot of welding arc
Authors: Balanovskiy A E , Shtayger M G , Karlina A I , Kargapoltsev S K , Gozbenko V E , Karlina Yu I , Govorkov A S , Kuznetsov B O 
Published: July 2019

Abstract
The structure, phase composition, and morphology of the surface layers of structural 1020, 1050, 1060 steels of the steel modified by the cathode spot of the welding arc are studied with the help of electron and optical microscopy. It is shown that the treatment of the cathode spot of the arc leads to grain refinement in the surface layer and causes its hardening. As a result of this treatment, partial or complete amorphization of the surface layer is possible.
Modeling the transportation and batching of slurry into a cement kiln
Authors: Andruschak S V , Besedin P V , Doroganov E A 
Published: July 2019

Abstract
The work discusses a method for constructing a model of a system for slurry transportation and batching into a cement kiln, as well as the structural modifications for the scheme of slurry batcher. The main goal of the developed model is to investigate the reduction in energy consumption by slurry transportation through reduced amount of pumped raw mixture and stabilized feeding of the slurry into the kiln, which can improve the quality of produced clinker. The modeling and study of transient processes in the hydrodynamic system was performed in MATLAB Simulink. The presented model can be used for designing and modeling a system of slurry batching into the cement kiln.
Quality and reliability improvement of “tube-tube plate” welded joints during welding by pulse pressure
Authors: Grechneva M V , Balanovskiy A E , Gozbenko V E , Kargapoltsev S K , Karlina A I , Shtayger M G , Karlina Yu I , Govorkov A S 
Published: July 2019

Abstract
The possibility of controlling the impact parameters for improving the quality and reliability of the welded joint of the tube-grid of the heat-exchange apparatus by adjusting the parameters of the discharge circuit of the electrotechnical-logical unit and the angle of cutting the opening of the tube grid is considered. A mathematical model is proposed and simulation is performed to estimate the impact parameters. The results of the simulation showed good agreement with the experimental ones, and the model can be used to calculate the optimum welding regime and improve the quality of the welded joint.
Application of plasma surface quenching to reduce rail side wear
Authors: Konstantinova M V , Balanovskiy A E , Gozbenko V E , Kargapoltsev S K , Karlina A I , Shtayger M G , Guseva E A , Kuznetsov B O 
Published: July 2019

Abstract
Hardening of the side surface of the rail head with the use of optical and electron microscopy is studied. Results of industrial tests are given. Plasma hardening of the side surface of the rail allows one to obtain a favorable structure of the surface hardened layer (mixture of troostite, bainite and martensite) with a hardness of 450-830 HV and a thickness of the quenched layer of 2.5-3 mm. Thus, this significantly increases the service life of the rails due to the 2-3-time decrease in the wear rate of the side surface of the rail. The developed unit for plasma surface hardening of the rail allows performing qualitative surface hardening in width, depth and hardness of the surface layer of the metal. This equipment can be recommended for further pilot-industrial plasma surface hardening of the rail side surface in the conditions of the East Siberian Railway.
The optical analogue of the Yoneda effect
Authors: Skaletskaya I E 
Published: July 2019

Abstract
Issues related to the surface treatment of materials and its quality control remain important to this day. Research on new methods and techniques is mainly related to the rapid development of new technologies in materials science, in particular, nanotechnology. Roughness parameters are still very important measures when working with various materials. The effect of the anomalous reflection of X-rays has played an extremely important role in the historical development of methods regarding in-process quality control when polishing high-strength materials (sapphires, diamonds, etc.). It is, however, important to look for ways to use nanotechnological control of optical materials that are universal, sensible, safe and inexpensive.
Method of controlling reactive stresses when joining reinforced concrete constructions with pool welding due to forcedly formed weld
Authors: Erofeev V V , Grebenshchikova O A , Ignatiev A G , Troyanovskaya I P , Sharafiev R G 
Published: July 2019

Abstract
The paper deals with a method of controlling stretching reactive stresses in reinforced concrete constructions. These deformations are caused by pool welding with forced weld formation in fabricated forms. This method does not require precise measuring and labour-intensive preparatory efforts and experiments. Reactive stresses are experimentally determined after welding the protruding bars of rigid reinforced constructions. The concentrator is used outside the heat-affected area (i.e. far from the welded joint). Reactive strains are determined on the basis of the calculated connection between the level of reactive stresses σw and the limiting cut depth lc. This method is used to determine the level of reactive stresses in the protruding bars of reinforced concrete constructions after certain modes of welding and to establish the optimum welding conditions to obtain the required values of reactive stresses σw.
Improving the quality of crane wheels machining
Authors: Shubin A A , Smolovik A E , Vitchuk N A 
Published: July 2019

Abstract
One of the most common types of damage to cranes is wear of the working surface and/or the ribs of the running wheel. When the maximum permissible wear is reached, the wheel is machined to restore its geometry. During production and repair of running wheels of load-lifting cranes, the problem of increasing the efficiency of the technological machining process on the rolling profile of the running wheels is a component of the general problem of increasing dependability of hoisting and transport machines. The technological process of restoring the profile of the surface of the crane wheels has a number of features. If the change in the depth of the cut can be estimated and then during processing to adjust the modes, then to measure and consider the hardness of the material to be removed are practically impossible. The lack of proper control over the change in the depth of the cut and the hardness of the treated surface often leads to the fact that the crane wheels turn in the understated modes, which adversely affects the performance. This causes the expediency of regulating the process according to such criterion as the optimal cutting temperature. The article describes the methods of experimental determination of the optimal cutting temperature. A new method of determination based on shear thermocouples is proposed. The authors obtained and compared dependences for thermo - EMF, corresponding to the optimum temperature, on the cutting speed, obtained with the help of shear and natural thermocouples.
The physical model of the vehicle electromagnetic shock absorber
Authors: Bakholdin P A , Shchurov N I , Bakholdin D A 
Published: July 2019

Abstract
This article presents the development of an electromagnetic absorber physical model. The developed system is designed for physical experiments realisation. Estimated experiments results are necessary for the suspension operating parameters adjustment. Research need is caused by the stochastic nature of the road unevenness and rolling stock parameters.
Determination of electromagnetic parameters for improvement of efficiency of special electric drives
Authors: Karandey V Yu , Popov B K , Popova O B , Afanasyev V L 
Published: July 2019

Abstract
The research of electromagnetic parameters for improvement of efficiency of special electric drives is presented in article. The analysis of the received results was carried out. An object of a research were special electric drives with asynchronous motors of cylindrical construction. The studied special electric actuators possess improved mass-dimensional and power indicators due to constructional features and the used control systems. For different industries application of electric actuators with the seized characteristics is a relevant task. For modeling and design of special electric drives it is necessary to create new approaches for determination of electromagnetic parameters or to make significant correction of the existing approaches. On the basis of the offered mathematical model of the electromagnetic system presented in the form of set of electromagnets parameters of the studied electric drives were determined electromagnetic. The analysis of the conducted research shows that the received solution will allow to improve efficiency of the special electric drives used in difficult technological processes of different industries.
Development of a backup drive in locomobile construction
Authors: Shubin A A , Vitchuk P V , Smolovik A E 
Published: July 2019

Abstract
Current maintenance and repair of the railway track is a prerequisite for the efficient operation of rail transport. The main task of the current maintenance of the way is to create conditions for ensuring the uninterrupted movement of trains with set speeds and long service life of all elements of the way. In recent years, locomobiles are coming into use. These are hybrid road-rail cars that are able to move both on the railway track and on highways. Locomobiles are made based on the car by installing the mechanisms of extension of the railway chassis on the frame of the car. Trains are constantly moving along the railway tracks, so repairs and maintenance of the track should not disrupt their schedule if it is possible. In case of an unworkable condition of the vehicle located on the railway track, there will be an emergency which requires towing transport and, accordingly, time costs, which accompanies large economic losses. In connection with the above, the task of creating a backup drive in the locomobile is urgent. The article presents the design of a backup drive for the locomobile and describes the principle of its operation. The dependencies for calculating the limiting operating time of the drive and the distance traveled by the vehicle are given, depending on the speed of its movement and the capacity of the battery. The graphs for determining the optimal speed of the locomobile are obtained.
Electric corona discharge as a basis for managing the quality of solid cereals
Authors: Porsev E G , Druzhinina N S 
Published: July 2019

Abstract
The paper overviews directions for electrotechnology treatment of grain seeds before sowing. The hypothesis of the germination enhancement of seeds if treated with corona discharge is presented here. Besides, the description of electrotechnology installation and facilities for it including manufacturing process quality obtained as a result of scientific tests are also provided in the paper.