Pub Date : 2023-04-12DOI: 10.30987/2782-5957-2023-4-39-46
D. Antipin, E. Lukashova, A. Boldyrev, F. Lozbinev
The analysis of domestic and foreign studies in the field of evaluating the dynamic strain of passenger car bodies allowed us to find out that most of the methods are based on the evaluation of the vibration strain. An improved method is proposed to consider to evaluate the vibration strain of the car. As a method for determining the body's structural properties, a mathematical modeling method is proposed. On the basis of this method, a finite element model of the body is developed, which natural frequencies and forms of vibrations are calculated by Lanczos method. The results obtained by finite element model are compared with the data obtained during tests conducted by the Testing Center TIV. The discrepancy between the calculation and the experiment is 11.85%, which indicates the adequacy of the created finite element model. To define the dynamic load of the body the developed finite element model was reduced to four variants, each of which is transformed into a spatial hybrid dynamic model. The results obtained during the calculation are compared with the values of the running tests of the car. The analysis of the data shows that the fourth variant of the finite element model of the passenger car body, which takes into account the real distribution of the mass of the internal equipment elements and the interior has values more approximate to the data obtained during running tests. Based on this, it can be concluded that this option is most suitable for calculating the stiffness characteristics of the passenger car body.
{"title":"IMPROVEMENT OF THE TECHNIQUE TO EVALUATE THE VIBRATION STRAIN OF THE PASSENGER CAR BODY","authors":"D. Antipin, E. Lukashova, A. Boldyrev, F. Lozbinev","doi":"10.30987/2782-5957-2023-4-39-46","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-4-39-46","url":null,"abstract":"The analysis of domestic and foreign studies in the field of evaluating the dynamic strain of passenger car bodies allowed us to find out that most of the methods are based on the evaluation of the vibration strain. An improved method is proposed to consider to evaluate the vibration strain of the car. As a method for determining the body's structural properties, a mathematical modeling method is proposed. On the basis of this method, a finite element model of the body is developed, which natural frequencies and forms of vibrations are calculated by Lanczos method. The results obtained by finite element model are compared with the data obtained during tests conducted by the Testing Center TIV. The discrepancy between the calculation and the experiment is 11.85%, which indicates the adequacy of the created finite element model. To define the dynamic load of the body the developed finite element model was reduced to four variants, each of which is transformed into a spatial hybrid dynamic model. The results obtained during the calculation are compared with the values of the running tests of the car. The analysis of the data shows that the fourth variant of the finite element model of the passenger car body, which takes into account the real distribution of the mass of the internal equipment elements and the interior has values more approximate to the data obtained during running tests. Based on this, it can be concluded that this option is most suitable for calculating the stiffness characteristics of the passenger car body.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114851783","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}
Pub Date : 2023-04-12DOI: 10.30987/2782-5957-2023-4-4-10
Bori Mokrickiy, A. Kosmynin, P. Sablin, V. Shelkovnikov
The study objective is to increase the durability period of replaceable carbide inserts by applying coatings for turning hard-to-machine stainless steels. Research results: recommendations are made on the choice of a rational coating of a metal-cutting tool, depending on its operating conditions. Conclusions: The developed coatings allow to increase the durability period of the cutting tool up to 3 times. The paper discusses the results of applying the newly developed coatings on the hard-alloy material of VK8 brand. The analysis is done for turning stainless steels of 09X17N7YU, 12X18N10T, 13X15N5AM-3 grades. The most rational coatings are found, which make it possible to increase the durability period of the metal-cutting tool up to 3 times.
{"title":"ON THE USE OF COATINGS FOR TURNING STAINLESS STEELS","authors":"Bori Mokrickiy, A. Kosmynin, P. Sablin, V. Shelkovnikov","doi":"10.30987/2782-5957-2023-4-4-10","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-4-4-10","url":null,"abstract":"The study objective is to increase the durability period of replaceable carbide inserts by applying coatings for turning hard-to-machine stainless steels. \u0000Research results: recommendations are made on the choice of a rational coating of a metal-cutting tool, depending on its operating conditions. \u0000Conclusions: The developed coatings allow to increase the durability period of the cutting tool up to 3 times. \u0000The paper discusses the results of applying the newly developed coatings on the hard-alloy material of VK8 brand. The analysis is done for turning stainless steels of 09X17N7YU, 12X18N10T, 13X15N5AM-3 grades. The most rational coatings are found, which make it possible to increase the durability period of the metal-cutting tool up to 3 times.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126215136","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}
Pub Date : 2023-04-12DOI: 10.30987/2782-5957-2023-4-19-30
The issues of increasing the passenger comfort level during railway transportation are considered. It is found out that the key factors for the comfort level are vertical vibrations of the body, and their intensity directly depends on the body bending stiffness. In turn, the first frequency and form of bending vibrations of the body can be taken as a criterion for evaluating bending stiffness. Design concepts aimed at increasing the comfort level of passengers and reducing the intensity of vibrations of car bodies are considered. Methods are analyzed that give the opportunity to increase the intrinsic frequency of the body bending vibrations by strengthening the metal structure of the body and making changes to the structure of its power frame, as well as by introducing specific inter-car connections. Methods of vibration isolation of the car bodies are reviewed by controlling damping in the car suspension system, as well as by reducing vibrations associated with the imbalance of wheel pairs. The experience of increasing the level of the com-fort due to the introduction of additional damping and the use of dynamic vibration damping systems has been studied. Advantages and disadvantages of the considered technical solutions are identified, as well as the experience of their use in real operation is evaluated. The analysis of the problem under consideration concerning engineering solutions for reducing bending vibrations of passenger car bodies shows the complexity of solving this problem, requiring the use of a set of theoretical and experimental studies, the choice of methods that take into account the features of the car designs and sources of vibration stimulation.
{"title":"STUDY OF BENDING VIBRATION PARAMETERS AND ANALYSIS OF METHODS OF THEIR SUPPRESSION IN THE BODIES OF MODERN PASSENGER CARS","authors":"","doi":"10.30987/2782-5957-2023-4-19-30","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-4-19-30","url":null,"abstract":"The issues of increasing the passenger comfort level during railway transportation are considered. It is found out that the key factors for the comfort level are vertical vibrations of the body, and their intensity directly depends on the body bending stiffness. In turn, the first frequency and form of bending vibrations of the body can be taken as a criterion for evaluating bending stiffness. Design concepts aimed at increasing the comfort level of passengers and reducing the intensity of vibrations of car bodies are considered. Methods are analyzed that give the opportunity to increase the intrinsic frequency of the body bending vibrations by strengthening the metal structure of the body and making changes to the structure of its power frame, as well as by introducing specific inter-car connections. Methods of vibration isolation of the car bodies are reviewed by controlling damping in the car suspension system, as well as by reducing vibrations associated with the imbalance of wheel pairs. The experience of increasing the level of the com-fort due to the introduction of additional damping and the use of dynamic vibration damping systems has been studied. Advantages and disadvantages of the considered technical solutions are identified, as well as the experience of their use in real operation is evaluated. The analysis of the problem under consideration concerning engineering solutions for reducing bending vibrations of passenger car bodies shows the complexity of solving this problem, requiring the use of a set of theoretical and experimental studies, the choice of methods that take into account the features of the car designs and sources of vibration stimulation.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114173378","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}
Pub Date : 2023-04-12DOI: 10.30987/2782-5957-2023-4-31-38
N. Grebennikov
The paper deals with the problem of defining the efficiency factor of electric traction machines of locomotives in operating conditions. Due to the fact that most of the time locomotives are operated with underload, for an objective evaluation of the energy efficiency of locomotives, it becomes necessary to take into account the power underutilization of traction electric machines in energy conversion. Based on the methods of electric drive theory, a formula for defining the efficiency factor for traction electric machines operating in a wide range of capacities is developed, which takes into account the influence of changes in operating modes on the efficiency of energy conversion. The analysis results of 2TE25KM diesel locomotive operation data are presented and the dependence of the efficiency factor in accordance with the position of the driver's controller is determined.
{"title":"DEFINITION OF THE EFFICIENCY FACTOR OF TRACTION ELECTRIC MACHINES OF LOCOMOTIVES IN OPERATING CONDITIONS","authors":"N. Grebennikov","doi":"10.30987/2782-5957-2023-4-31-38","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-4-31-38","url":null,"abstract":"The paper deals with the problem of defining the efficiency factor of electric traction machines of locomotives in operating conditions. Due to the fact that most of the time locomotives are operated with underload, for an objective evaluation of the energy efficiency of locomotives, it becomes necessary to take into account the power underutilization of traction electric machines in energy conversion. Based on the methods of electric drive theory, a formula for defining the efficiency factor for traction electric machines operating in a wide range of capacities is developed, which takes into account the influence of changes in operating modes on the efficiency of energy conversion. The analysis results of 2TE25KM diesel locomotive operation data are presented and the dependence of the efficiency factor in accordance with the position of the driver's controller is determined.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115083493","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}
Pub Date : 2023-03-14DOI: 10.30987/2782-5957-2023-3-14-20
D.Yu. Palin
The paper shows the process of constructing a model of a magnetic system of a ferrofluidic seal by means of femm 4.2. The results of a finite element simulation of a magnetic field are presented. It is found out that finite element modeling of the magnetic field gives the opportunity to assess qualitatively the efficiency of the magnetic system of ferrofluidic seals.
{"title":"FINITE ELEMENT MODELING OF MAGNETIC FIELDS OF FERROFLUIDIC SEALS","authors":"D.Yu. Palin","doi":"10.30987/2782-5957-2023-3-14-20","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-3-14-20","url":null,"abstract":"The paper shows the process of constructing a model of a magnetic system of a ferrofluidic seal by means of femm 4.2. The results of a finite element simulation of a magnetic field are presented. It is found out that finite element modeling of the magnetic field gives the opportunity to assess qualitatively the efficiency of the magnetic system of ferrofluidic seals.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129419022","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}
Pub Date : 2023-03-14DOI: 10.30987/2782-5957-2023-3-45-58
A. Pugachev, V. Vorob'ev, O. Izmerov, E. Nikolaev
The problem of import-substituting components for the support-axial traction drive of an electric train with a wheel diameter of 950 mm is considered. As a result of the analysis, the disadvantages of the drive using foreign components are revealed: a high unsprung mass, which worsens the impact of the crew on the track, the difficulty of providing the required dynamic properties with elastic support of the motor-gear unit on the axle, the complexity of manufacturing and assembling the drive. The inexpediency of copying foreign solutions to create a domestic analogue of a traction drive is established. Variants of technically possible traction drive adapted for domestic production and easier to manufacture are considered. It is proposed to use a traction drive with a high-torque support - frame traction engine, with an increased outer diameter and the same circumferential speed of the rotor and an axial gearbox. It is proved that in this case, due to a decrease in the speed of the drive shaft, the design of the gearbox is simplified, which can be made single-reduction, and it becomes possible to use the developed and studied domestic flat rubber-cord couplings. A new design of the transverse rubber-cord coupling is proposed. For the case of using a domestic high-speed traction electric motor in the drive, it is proposed to use an aggregate-type traction drive. Two utility model patents are obtained for the proposed technical solutions and a patent application is filed.
{"title":"DEVELOPMENT OF A SUPPORT-AXIAL DRIVE OF PASSENGER ELECTRIC TRAINS WITH ASYNCHRONOUS TRACTION ENGINES","authors":"A. Pugachev, V. Vorob'ev, O. Izmerov, E. Nikolaev","doi":"10.30987/2782-5957-2023-3-45-58","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-3-45-58","url":null,"abstract":"The problem of import-substituting components for the support-axial traction drive of an electric train with a wheel diameter of 950 mm is considered. As a result of the analysis, the disadvantages of the drive using foreign components are revealed: a high unsprung mass, which worsens the impact of the crew on the track, the difficulty of providing the required dynamic properties with elastic support of the motor-gear unit on the axle, the complexity of manufacturing and assembling the drive. The inexpediency of copying foreign solutions to create a domestic analogue of a traction drive is established. Variants of technically possible traction drive adapted for domestic production and easier to manufacture are considered. It is proposed to use a traction drive with a high-torque support - frame traction engine, with an increased outer diameter and the same circumferential speed of the rotor and an axial gearbox. It is proved that in this case, due to a decrease in the speed of the drive shaft, the design of the gearbox is simplified, which can be made single-reduction, and it becomes possible to use the developed and studied domestic flat rubber-cord couplings. A new design of the transverse rubber-cord coupling is proposed. For the case of using a domestic high-speed traction electric motor in the drive, it is proposed to use an aggregate-type traction drive. Two utility model patents are obtained for the proposed technical solutions and a patent application is filed.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"60 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129365147","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}
Pub Date : 2023-03-14DOI: 10.30987/2782-5957-2023-3-4-13
Mariya Valyaeva, L. Kondratieva
The study objective is to synthesize sialon powder in the mode of solid-flame combustion of silicon dioxide (sand) - sodium azide – silicon and aluminum halogenide systems. The task to which the paper is devoted is to find out the initial charge composition (choosing from several sand samples the best in terms of the amount of impurities and the gradation factor), which synthesis gives Si3Al3O3N5 sialon in the mode of solid-flame combustion. Research methods used to obtain and analyze the synthesized product in SHS-Az mode: self-propagating high-temperature synthesis using sodium azide and halogenides in SHS-Az laboratory reactor, X-ray fractional analysis on ARL X'trA-138 diffractometer and the study of microstructure by a scanning electron microscope JSM-6390A. The novelty of the work is in the fact that for the first time SHS-Az method is applied to conduct research on the synthesis of sialon from systems which use bank sand as silicon dioxide. The study results on the synthesis of sialon in the mode of solid-flame combustion show that the final product, in addition to β-Si3Al3O3N5 consists of some more phases such as Si3N4: AlN, Si, naf and Na3AlF6. It is found out that during combustion the formed uniform particles of the product are combined into agglomerate. The average size of the particles that make up the product is 180-230 nm. Conclusions: it is found out that Si3Al3O3N5 sialon is obtained in the mode of solid-flame combustion of silicon dioxide (sand) - sodium azide – silicon and aluminum halogenide systems.
{"title":"SYNTHESIS OF SIALONE FROM SHS SYSTEM IN THE MODE OF SOLID-FLAME COMBUSTION","authors":"Mariya Valyaeva, L. Kondratieva","doi":"10.30987/2782-5957-2023-3-4-13","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-3-4-13","url":null,"abstract":"The study objective is to synthesize sialon powder in the mode of solid-flame combustion of silicon dioxide (sand) - sodium azide – silicon and aluminum halogenide systems. The task to which the paper is devoted is to find out the initial charge composition (choosing from several sand samples the best in terms of the amount of impurities and the gradation factor), which synthesis gives Si3Al3O3N5 sialon in the mode of solid-flame combustion. Research methods used to obtain and analyze the synthesized product in SHS-Az mode: self-propagating high-temperature synthesis using sodium azide and halogenides in SHS-Az laboratory reactor, X-ray fractional analysis on ARL X'trA-138 diffractometer and the study of microstructure by a scanning electron microscope JSM-6390A. The novelty of the work is in the fact that for the first time SHS-Az method is applied to conduct research on the synthesis of sialon from systems which use bank sand as silicon dioxide. The study results on the synthesis of sialon in the mode of solid-flame combustion show that the final product, in addition to β-Si3Al3O3N5 consists of some more phases such as Si3N4: AlN, Si, naf and Na3AlF6. It is found out that during combustion the formed uniform particles of the product are combined into agglomerate. The average size of the particles that make up the product is 180-230 nm. Conclusions: it is found out that Si3Al3O3N5 sialon is obtained in the mode of solid-flame combustion of silicon dioxide (sand) - sodium azide – silicon and aluminum halogenide systems.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129529965","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}
Pub Date : 2023-03-14DOI: 10.30987/2782-5957-2023-3-37-44
S. Korzhin, V. Melanin, S. Bespal'ko, Evgeniya Komissarova
The paper is devoted to modeling the stress-strain state of a car wheel in the case of its heat treatment. The calculation technique is based on the application of the finite element method for a specialized design diagram. The final elements have the form of rings of triangular cross-section. The initial equations are used on the basis of the theory of elasticity. The approximation of movements along the axis of rotation and along the radius is linear, in the circumferential direction it has the form of trigonometric series. Using the proposed technique, calculations of a wheel with two variants of rim hardening are implemented: as one annular strip on the rolling surface and with the use of two additional strips with an intermediate degree of hardening. The developed means of modeling can be used to develop methods and to select wheel hardening parameters.
{"title":"THE WHEEL STRESS-STRAIN ANALYSIS AFTER HEAT TREATMENT USING THE THEORY OF ELASTICITY","authors":"S. Korzhin, V. Melanin, S. Bespal'ko, Evgeniya Komissarova","doi":"10.30987/2782-5957-2023-3-37-44","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-3-37-44","url":null,"abstract":"The paper is devoted to modeling the stress-strain state of a car wheel in the case of its heat treatment. The calculation technique is based on the application of the finite element method for a specialized design diagram. The final elements have the form of rings of triangular cross-section. The initial equations are used on the basis of the theory of elasticity. The approximation of movements along the axis of rotation and along the radius is linear, in the circumferential direction it has the form of trigonometric series. \u0000Using the proposed technique, calculations of a wheel with two variants of rim hardening are implemented: as one annular strip on the rolling surface and with the use of two additional strips with an intermediate degree of hardening. \u0000The developed means of modeling can be used to develop methods and to select wheel hardening parameters.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121601661","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}
Pub Date : 2023-03-14DOI: 10.30987/2782-5957-2023-3-21-29
O. Oganesyan, O. Burlachenko
The study objective is to identify modern production technologies used at almost all phases of the life cycle. To achieve this objective, there have been analyzed and reviewed papers and foreign studies published mainly within 2016-2020 in journals covered by SCOPUS and WoS indexing services, as well as studies of Russian scientists over the past ten years, which are indexed in the above-mentioned international services, as well as in the national RSCI system. The references analyzed in this paper prove that additive technologies are inferior to combined (additive-subtractive, additive-subtractive-hardened, etc.) technologies from the point of view of obtaining high-quality products at the present stage of production development. Conclusions: it is proposed to include the stage of capital repairs and updating of the general model at the stage of modeling the life cycle of machine-building products, which can be the right direction for choosing the most effective technology regardless of the life cycle phase; the choice of technology for the production stage of a particular product or part should be justified in terms of improving the basic operational properties and increase of the residual resource.
{"title":"MODERN PRODUCTION TECHNOLOGIES APPLIED TO VARIOUS LIFE CYCLE PHASES OF PRODUCTS AND MACHINE PARTS","authors":"O. Oganesyan, O. Burlachenko","doi":"10.30987/2782-5957-2023-3-21-29","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-3-21-29","url":null,"abstract":"The study objective is to identify modern production technologies used at almost all phases of the life cycle. To achieve this objective, there have been analyzed and reviewed papers and foreign studies published mainly within 2016-2020 in journals covered by SCOPUS and WoS indexing services, as well as studies of Russian scientists over the past ten years, which are indexed in the above-mentioned international services, as well as in the national RSCI system. The references analyzed in this paper prove that additive technologies are inferior to combined (additive-subtractive, additive-subtractive-hardened, etc.) technologies from the point of view of obtaining high-quality products at the present stage of production development. \u0000Conclusions: it is proposed to include the stage of capital repairs and updating of the general model at the stage of modeling the life cycle of machine-building products, which can be the right direction for choosing the most effective technology regardless of the life cycle phase; the choice of technology for the production stage of a particular product or part should be justified in terms of improving the basic operational properties and increase of the residual resource.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131691572","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}
Pub Date : 2023-03-14DOI: 10.30987/2782-5957-2023-3-30-36
D. Kharlamov
The paper presents energy and technological indicators and designs of improved electric furnace units for melting steel from iron ore raw materials (IOR). A method of controlling an arc furnace with a continuous IOR supply is proposed, which gives the opportunity to control and regulate the active power of the furnace, thermal processes in the welding bath of the electric arc, as well as in the unit as a whole. The design of a ladle unit for out-of-furnace melt treatment is presented, which allows the melting of high-quality electrical steel and simultaneous treatment with inert gases. At the same time, it is possible to reduce the metal carbon monoxide and IOR melting time.
{"title":"ELECTROSMELTING CONTROL IN ARC FURNACE AND LADLE FURNACE WITH CONTINUOUS SUPPLY OF IRON RAW MATERIALS INTO THE WELD POOL","authors":"D. Kharlamov","doi":"10.30987/2782-5957-2023-3-30-36","DOIUrl":"https://doi.org/10.30987/2782-5957-2023-3-30-36","url":null,"abstract":"The paper presents energy and technological indicators and designs of improved electric furnace units for melting steel from iron ore raw materials (IOR). A method of controlling an arc furnace with a continuous IOR supply is proposed, which gives the opportunity to control and regulate the active power of the furnace, thermal processes in the welding bath of the electric arc, as well as in the unit as a whole. The design of a ladle unit for out-of-furnace melt treatment is presented, which allows the melting of high-quality electrical steel and simultaneous treatment with inert gases. At the same time, it is possible to reduce the metal carbon monoxide and IOR melting time.","PeriodicalId":289189,"journal":{"name":"Transport engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126381739","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}
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