Visnyk of Vinnytsia Politechnical Institute最新文献

{"title":"The Modeling and the Experimental Researches of the Microwave-Measuring Transformer of the Humidity of Natural Gas","authors":"Yo.Yo. Bilynskyi, B. Knysh, D. Novytskyi","doi":"10.31649/1997-9266-2021-154-1-7-13","DOIUrl":"https://doi.org/10.31649/1997-9266-2021-154-1-7-13","url":null,"abstract":"There has been considered the problem of ensuring the accuracy of quality assessment of natural gas when the composition of gas is in accordance with the specific values of its main physical properties (a calorific value, a rate of moisture, the presence of corrosive components (hydrogen sulfide, carbon dioxide, etc.)) and its possible solving grounded in the modern gas measuring approaches. The most dangerous and, in this way, important is an issue with a humidity presence inside of a gas mix because it can cause such negative outcomes as the corrosion of the pipelines and armatures, the formation of hydrates (composition of water and other agents ) and the condensates. \u0000There has been proposed the math model of microwave-measuring transforming of natural gas humidity bases on the absorbing of a microwave signal and, in such a way, measuring of signal volume on the end of a waveguide during the changing of the gas humidity. To do this, we use the properties of running wave. The natural gas can be presented as the binary heterogeneous structure of two dielectrics (water-gas), so the equivalent scheme allows us measure the electric losses in a capacitor system using the know frequency of an electric signal. \u0000The modeling of an equivalent scheme of a microwave-measuring transformer of natural gas humidity and its main results has been presented. \u0000The experimental researches of a microwave-measuring transformer of natural gas humidity have been carried out. For this purpose, the research methodology was developed and specific instruments and measuring devices were implemented: the model generator of natural gas humidity “Rodnic-2”, the stationary gauge system Mitchell Dew Point Calibration System Precesion Dewpointmeter produced by Michell Instruments and calculator Free Professional Online Humidity Calculator. The results of the experimental researches and modeling confirm the adequacy of the developed model of a microwave-measuring transformer of natural gas humidity.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121337980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Information Technology for Optimization the Personnel Potential of a Health Care Institution","authors":"О. Y. Mulesa, V. Y. Snytiuk, І. S. Myroniuk","doi":"10.31649/1997-9266-2019-147-6-83-90","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-147-6-83-90","url":null,"abstract":"In the context of the reform of the health care system of the population as a component of the country’s health care system, the problem of maximizing the rational use of both existing materials and technical bases and the human resources of health care institutions is urgent. It is necessary to develop methods and tools for assessing the rational use of available resources of healthcare institutions and planning the optimization of both logistical and human resources for their effective functioning in the conditions of the market of medical services, which is formed in Ukraine. The purpose of the research is to develop information technology to optimize the functioning of the personal potential of healthcare institutions. \u0000The medical institution is presented as a system, the main parameters of which are the indicators that characterize the employees of the institution; indicators characterizing the volume of services and the duration of their provision; employee competency matrix, which records the ability of employees to provide certain services. \u0000When designing information technology, the solutions of the following tasks are required: \u0000– determination of regulatory burden on employees and the institution as a whole; \u0000– optimal distribution of services among the employees of the institution; \u0000– optimizing the functioning of the staff of the healthcare facility. \u0000The article builds a model for evaluating the regulatory burden on health care providers and the healthcare facility as a whole. The regulatory burden on a healthcare facility means the maximum amount of credit (minutes worked) that all its employees have within their own working hours. The model takes into account the differences between the positions and competencies of different employees. \u0000A model for optimizing the functioning of health care staff in the form of an integer linear programming problem is constructed. The set of possible decisions is built under the condition that workers are not overloaded and all services are provided. An approach is proposed to analyze the potential of a healthcare facility, which is to consistently solve a number of optimization tasks of integer linear programming. \u0000Experimental verification of the results was performed. The model example shows the effectiveness of developed information technology.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130916861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microprocessor Device for Diagnosing the Electromagnetic Drive of the Vacuum Circuit Breaker","authors":"O. Didushok, СSC-Automation Vinnytsia Branch","doi":"10.31649/1997-9266-2019-147-6-31-36","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-147-6-31-36","url":null,"abstract":"The paper proposes a microprocessor device for diagnosing the electromagnetic drive of a vacuum switch. It is investigated that the reliable operation of the vacuum switch depends on the technical condition of the electromagnetic actuator. Microprocessor diagnostic devices allow controlling the quality of manufactured electromagnetic actuators at the stage of initial control of the manufacturer and in the process of their operation in production. On the basis of a mathematical model, which provides for the measurement of the \"reference\" curve of the magnetic characteristic after the new switch is put into operation or after its overhaul and comparison of this curve with the subsequent measured magnetic characteristics in the course of its further operation. During operation, the shape of the web-ampere characteristics of the windings of the electromagnetic drive of the vacuum switches changes. The control of deviation from the \"reference\" characteristic allows estimating the current state of the electromagnet and its degree of wear. The block diagram of the microprocessor device of the system of diagnostics of the electromagnetic drive of the vacuum switch is developed. The microprocessor device functions according to the developed mathematical model. The main components of the device are the AT32UC3L032 microcontroller, switching units, current sensors and voltages. The AT32UC3L032 microcontroller is the best option in terms of cost and specifications (low power consumption, high code density, and high performance). The algorithm of functioning of the diagnostic device and its hardware necessary for the construction of the diagnostic system has been developed. The operation of the device involves determining the technical condition of the drive, indicating the result of the diagnosis on the display device near the diagnostic device and transmitting through the interface of the converter the current status of the electromagnetic drive from the microcontroller to the computer operating personnel.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127841615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cylindrical Inductor System with Internal Bifilary Solenoid. Analysis of Electromagnetic Characteristics","authors":"Yu. Batyhin, Yevhen Chaplyhin, S. Shynderuk, T. Havrylova, D. A. Kovalenko","doi":"10.31649/1997-9266-2019-147-6-19-24","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-147-6-19-24","url":null,"abstract":"A cylindrical inductor system with an internal coaxial solenoid, the winding of which is made in the form of a bifilar, is considered. The physical and mathematical model of the proposed system assumes the working conditions when the external inductor is turned off, its turns are made of metal with high electrical conductivity; sufficiently close to each other, so that their inner surface can be considered a continuous surface of the ideal conductor. The coils of the bifilar winding are made of metal tape and do not affect the occurring electromagnetic processes. A harmonic current flows in the bifilar. \u0000Based on the calculated ratios for the strengths of the fields excited in the system, numerical estimates of the characteristics of the electromagnetic processes are obtained. \u0000The case when the currents in each of the branches of the bifilar which directed in opposite directions is analyzed. Various cases of the transverse and longitudinal dimensions of the system are considered, as well as options for connecting one or two bifilar coils. It is shown that the integral magnetic flux in the internal cavity of the system under consideration, regardless of its design features, is zero and, accordingly, the inductance of the entire system as a whole is zero. The concentration of the magnetic flux in the system with a bifilar takes place in the cavity between its windings, which is explained by the positive superposition of the unidirectional induction vectors of the excited fields. Changes in the geometry and number of components allow varying the indices of the radial distributions of electro-magnetic fields in the inductor system considered. The obtained numerical estimates for the characteristics of magnetic fields excited in inductor system, real design first proposed by the authors, excited by directed in opposite directions currents in the windings of the bifilar, will be useful in choosing working design solutions for the corresponding elements of magnetic pulse metal processing equipment. \u0000The proposed method of analysis will also allow appropriate experimental studies, as well as calculation and analysis of electromagnetic processes in inductor systems, where bifilar coils are placed on top of cylindrical solenoids, which is very interesting for the formation for new equipment magnetic-pulse processing of metal.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128402444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the Issue of Optimization of Electric Car Movement with Asynchronous Electric Drive","authors":"B. Mokin, O. Mokin, V. Horeniuk","doi":"10.31649/1997-9266-2019-144-3-32-39","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-144-3-32-39","url":null,"abstract":"It is shown that the results obtained in the research of a number of scientists devoted to solving the problem of frequency control of the modes of operation of a Squirrel-cage induction motor, optimal for the criterion of minimum electrical losses, require significant correction, since they are obtained using a mathematical model of the magnetization curve approximated by two straight line segments, the top of which runs parallel to the axis of current that does not meet the physical conditions of the real functioning of induction machines and requires a stabilization of the magnetic flux in the gap at a level that is specified horizontal magnetization curve regardless of changes in frequency current in the stator winding. It is proposed to solve the problem of the optimal criterion for minimizing the losses of electric energy of frequency control of the modes of operation of a Squirrel-cage induction motor, which is a traction in the electric car, using a mathematical model of the magnetization curve in the form of an inverse hyperbolic sinus, which, with high accuracy, binds the electric current in the stator winding of the induction motor with a magnetic flux created by the field of this current, and therefore corresponds to the physical conditions of the real functioning of induction machines. Presented the results of the solution of the problem of optimal frequency control by the modes of a Squirrel-cage induction motor in the conditions of its work as a traction in the electric car motor drive system obtained using the Lagrange variational method option and the mathematical model of the magnetization curve in the form of an inverse hyperbolic sinus and which lead to the field of extremals in coordinates relative time, relative velocity of electric vehicle and relative current in winding of a stator of its driving electric motor.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124348117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"System Analysis of the Sizes of the Fragment of Images of Aerial Photography of Agricultural Lands for the Search of Anomalies in these by Machine Learning Methods","authors":"V. Mokin, D. M. Groozman, S. O. Dovhopoliuk, A. O. Lototskyi","doi":"10.31649/1997-9266-2019-144-3-75-85","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-144-3-75-85","url":null,"abstract":"Big problems for agricultural lands (ACL) are plant diseases, pests, weeds and other anomalies. The rapid growth of such problem areas is of great harm if they are not found in time, localized and neutralized. With a large area and, often, inaccessibility to individual areas of the field, aerial photography from drones with its subsequent processing by artificial intelligence methods, machine learning, first of all — deep learning, is used to eliminate such problems. Each image is divided into small fragments and analyzed, but the result of the analysis essentially depends on the choice of the size of such fragments. The purpose of the study is to develop an integrated systems approach to analyzing and calculating the smallest fragment of aerial photography of an ACL, which is optimal for many criteria, to search for anomalies in them by the methods of machine deep learning. There has been carried out a review of known approaches to solving the problem of finding such anomalies and the information technologies have been proposed which should be used at the preprocessing, machine deep learning stages and the typical problems which should be eliminated during this, taking into account the specifics of the subject area. The main criteria that should be taken into account to solve the problem are highlighted: the duration of the calculations, the accuracy (minimum error) of the model training, the proximity of the average area of clusters to the given one, subject to a number of restrictions. An expression of the integral criterion for taking into account these criteria and approaches to the choice of their weights are proposed. An algorithm has been developed for applying the proposed approaches and techniques for applying the known methods of machine depth learning and clustering. A real example of the application of this algorithm is given and its efficiency is demonstrated for cases where the most significant (with weighing 0,5) criterion is the duration of the calculations and when the proximity of the average area of clusters to the given one. The proposed set of approaches and techniques for systematic analysis of the size of a fragment of an aerial photography image of the ACL will improve the accuracy and speed of searching for anomalies in them by machine deep learning methods and, in general, will allow for more efficient and timely detection of various plant diseases, weeds, pests, and the like.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132122213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Experimental Data Needed for Synthesis of the Mathematical Model of Predicting the Distribution of Allergen Spring of Municipal Alternaria","authors":"V. B. Mokin, V. Rodinkova, M. V. Dratovanyi","doi":"10.31649/1997-9266-2019-144-3-50-58","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-144-3-50-58","url":null,"abstract":"To predict the distribution of the allergenic fungal spores that have a negative effect on the health of a large number of people, it is necessary to synthesize predictive mathematical models that interconnect in time the concentration of allergenic fungal spores that spread as a result of the movement of air masses, which is the initial coordinate of the model, and the accompanying meteorological factors such as wind speed, air temperature, air humidity and a number of other factors that are input coordinates of the model. To determine and identificate the structure of the parameters of such predictive mathematical models, we need the results of an experimental study of the interactions between all these coordinates, which in their original form cannot be used directly to identify the above class of mathematical models, since they are nonstationary stochastic. In this paper, the following processing of the results of an experimental study of all these non-stationary stochastic coordinates characterizing the process of distribution of the allergenic fungal spores obtained on the basis of the Vinnitsa National Medical University, leads to such characteristics of these coordinates, which can then be used for synthesis of predictive mathematical models. These characteristics are stationary zonation of coordinates due to the transition from their measured values to their increments and correlation coefficients and autocorrelation and mutual correlation functions, calculated with regard to the increments of all the considered coordinates.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133653983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the Oscillating Power in Asymmetrical Non-Sinusoidal Modes of Electric Networks","authors":"M. Burbelo, O. V. Stepura, Vinnytsia Ukraine Itc Energy Accounting Ltd.","doi":"10.31649/1997-9266-2019-142-1-24-30","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-142-1-24-30","url":null,"abstract":"The possibility of detection and evaluation of the influence of distortion sources (asymmetry and higher harmonics) on the quality of electricity of three-phase networks using instantaneous conditional capacities of the reverse and zero sequences is analyzed. Such sources are nonlinear consumers, whose share in total load increases year by year. Nonlinear consumers consume active power at the main frequency and at the same time generate power to the higher harmonics in the network. Significantly in low voltage networks, there is also a share of consumers with asymmetric load of phases. On the basis of the theory of instantaneous power, instantaneous values are allocated on the basis of which informative values can be formed that allow characterizing the influence of nonlinear and asymmetric consumers on deterioration of the quality of electricity, as well as assessing the inefficiency of the distribution network of the electricity supplying organization. \u0000To evaluate the impact of nonlinear and asymmetric consumers, it is expedient to use instantaneous conditional capacities  and , which are essentially the product of instantaneous direct current voltage on the current of the reverse and zero sequence, and to assess the fault of the electricity supply organization, which consists in the ineffective construction of the distribution network — instant conditional capacities  and , which is essentially a product of instantaneous current of direct sequence on the back and zero sequence voltage. The formation of these values is carried out using the system of α, β, 0-coordinates, which greatly simplifies the construction of measuring devices. \u0000In the presence of harmonic distortions, the RMS values of conditional capacities  and  grow and make up from one to ten percent relatively to the main power generated by the voltage and current of the main frequency of the direct sequence. In the case of load asymmetry, the average values of these quantities increase. At the same time an increase  and testifies to the lack of power of power transformers and the inappropriate use of transformers with the scheme of winding connection \"star / star with zero sequence\" for powering nonlinear consumers.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114899617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvements of Mechanical Characteristics of Gray Cast Iron by Heat Treatment and Justification of Its Parameters","authors":"V. Savuliak, H. A. Hryha, A. Osadchuk","doi":"10.31649/1997-9266-2019-142-1-72-77","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-142-1-72-77","url":null,"abstract":"The article discusses the technology of heat treatment of gray cast irons in order to improve their mechanical characteristics by implementing a bainitic transformation of the metal matrix. It is proposed to use the environmentally safe technology of hardening “in two waters” to start the process of transformation of austenite of a gray cast iron matrix into bainite without using environmentally harmful baths with molten alloys or salts, and further complete or partial isothermal decomposition of austenite in air furnaces. This not only improves the environmental performance of the process, but also significantly reduces the cost of it. The definition of rational parameters of the process of heat treatment of gray cast irons was carried out using the method of planning and implementing a multifactor experiment. The adequacy of the results obtained as a result of measurements with the implementation of parallel experiments was checked using Student's criterion and satisfied the requirements, and also allowed to discard insignificant members of the regression equation. The regression model of the influence of process parameters on the hardness of thermally hardened cast iron was tested using the Fisher criterion, which showed its adequacy. Experimental studies to determine the factors that determine the strength of gray cast iron hardened to bainite made it possible to establish rational temporal parameters of heat treatment. It is shown that the exposure time in the furnace at 850 °C before cooling and the exposure time in the furnace with a temperature of 400 °C in the process of austenite decomposition should be limited to 30 minutes. The implementation of heat treatment technology with certain parameters to improve the quality of casting, mass produced at the plants of the region, allowed to increase the compressive strength of cast iron by 1.5 times, the surface hardness by 2 times, and the brand of cast iron to increase from SCH20 to SCH25—SCH30. At the same time, it was possible to reduce emissions of vapors of salts, metals and other products of the interaction of melts with the atmosphere.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128926125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical Modeling of Erosion Destruction of Teeming Ladle Lining in the Process of Its Exploitation","authors":"L. Molchanov, O. Lantukh, Y. Synehin","doi":"10.31649/1997-9266-2019-142-1-65-71","DOIUrl":"https://doi.org/10.31649/1997-9266-2019-142-1-65-71","url":null,"abstract":"The aim of the work is to determine the conditions for reducing the rate of erosion destruction of teeming ladles lining by flows of liquid metal. A concomitant and inherent positive effect is the reduction of steel pollution by the products of lining destruction (exogenous non-metallic inclusions). In the article there have been discussed the mechanisms of destruction of the refractories of teeming ladles. It is observed a significant effect of erosive destruction of the lining during the steel production from the steelmaking unit and in the process of its filling on its life. The authors have proposed a method of physical modeling of erosive destruction of refractories using the basic principles of the similarity theory. Based on the π-theorem, the authors proposed dimensionless similarity numbers, based on which the model scales were determined, in particular, the scale factors for the refractory hardness, fluid density, linear scale of the model and the rate of destruction of refractory. Using the obtained scales, the authors assembled an experimental facility and developed the methodology of an experiment. For the experiment, large-scale models of ladles with standard and developed scheme of lining were used. After carrying out physical modeling, the depth of lining destruction of the ladle model has been measured using a special technique. Based on the results of measurement, a topographic scheme of the lining destruction of the model ladle for the standard and proposed lining has been drown. It has been determined that the developed lining design provided protection for the “impact zone” and reduced the intensity of lining erosion in the area of joint the walls and the bottom of the ladle by the flows of liquid metal. The average rate of destruction of the bottom when using the developed design of the lining is reduced by 18%. The scientific novelty of the work consists in the development of the theoretical foundations of the physical low-temperature modeling of erosive destruction of the ladles lining and other metallurgical units by high-temperature metal melts. The practical significance of the work is the lining design of the teeming ladles, which provides a long life of the teeming ladles with a simultaneous decrease in the level of steel pollution by exogenous nonmetallic inclusions.","PeriodicalId":101869,"journal":{"name":"Visnyk of Vinnytsia Politechnical Institute","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128195868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}