Pub Date : 2024-02-29DOI: 10.3103/s0967091223110347
A. S. Ustyukhin, V. A. Zelenskii, I. M. Milyaev, V. S. Shustov, V. S. Yusupov
Abstract
Samples of an isotropic hard magnetic alloy Fe–30Cr–20Co–2V were obtained using the powder metallurgy method. The effect of temperature and time of isothermal exposure, as well as the cooling rate, on magnetic properties of the material is studied. Optimal heat treatment modes were determined. The most sensitive parameter is established to be the temperature at the beginning of treatment. The effect of vanadium doping on the phase and elemental composition depending on heat treatment conditions is analyzed.
{"title":"Features of Vanadium Doping of Fe–30Cr–20Co Powder Hard Magnetic Alloy","authors":"A. S. Ustyukhin, V. A. Zelenskii, I. M. Milyaev, V. S. Shustov, V. S. Yusupov","doi":"10.3103/s0967091223110347","DOIUrl":"https://doi.org/10.3103/s0967091223110347","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Samples of an isotropic hard magnetic alloy Fe–30Cr–20Co–2V were obtained using the powder metallurgy method. The effect of temperature and time of isothermal exposure, as well as the cooling rate, on magnetic properties of the material is studied. Optimal heat treatment modes were determined. The most sensitive parameter is established to be the temperature at the beginning of treatment. The effect of vanadium doping on the phase and elemental composition depending on heat treatment conditions is analyzed.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886899","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 : 2024-02-29DOI: 10.3103/s0967091223110049
M. P. Baryshnikov, A. S. Ishimov, E. V. Lopatina, L. V. Nosov, I. E. Znikin
Abstract
The influence of surface treatment with a flexible tool with the simultaneous application of a brass coating on grade 25 steel on resistance to fracture under cyclic loading has been considered. In accordance with GOST 25.502–79, a test base of 10 million cycles has been selected to determine the cyclic durability of type I cylindrical samples. The influence of surface treatment with a flexible tool on cyclic durability has been studied under the conditions of a given test base. It has been found that samples without surface treatment with simultaneous application of brass coating were destroyed after 5 million cycles. Measurements of the microhardness of the coating, deformed layer and base material have been carried out.
{"title":"Study of the Influence of Surface Treatment with a Flexible Tool on the Cyclic Durability Resistance of Steel Grade 25","authors":"M. P. Baryshnikov, A. S. Ishimov, E. V. Lopatina, L. V. Nosov, I. E. Znikin","doi":"10.3103/s0967091223110049","DOIUrl":"https://doi.org/10.3103/s0967091223110049","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The influence of surface treatment with a flexible tool with the simultaneous application of a brass coating on grade 25 steel on resistance to fracture under cyclic loading has been considered. In accordance with GOST 25.502–79, a test base of 10 million cycles has been selected to determine the cyclic durability of type I cylindrical samples. The influence of surface treatment with a flexible tool on cyclic durability has been studied under the conditions of a given test base. It has been found that samples without surface treatment with simultaneous application of brass coating were destroyed after 5 million cycles. Measurements of the microhardness of the coating, deformed layer and base material have been carried out.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002582","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 : 2024-02-29DOI: 10.3103/s0967091223110037
K. E. Akopyan, V. S. Yusupov, E. D. Koryakovskii, I. L. Kontievskii, N. L. Bolobanova
Abstract
The issues of choosing technology for profiling electric-welded steel pipes with a triangular cross-section are considered. Modern methods for the production of steel profiled pipes and the principle for profiling triangular pipes are described, as well as the feasibility of profiling triangular pipes in three-roll gauges for several passes is determined. A technological diagram of the TESA 21-89 pipe electrowelding facility (PEWF) for the production of different profiles is presented. The fact that producing pipes with a triangular cross section is possible with the use of such equipment has been shown. Results for the further development of a methodology for calculating roll gauges and deformation modes when profiling a pipe with a round cross-section into a triangular one are presented.
{"title":"Concerning the Profiling of Electrowelded Steel Pipes with a Triangular Cross Section","authors":"K. E. Akopyan, V. S. Yusupov, E. D. Koryakovskii, I. L. Kontievskii, N. L. Bolobanova","doi":"10.3103/s0967091223110037","DOIUrl":"https://doi.org/10.3103/s0967091223110037","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The issues of choosing technology for profiling electric-welded steel pipes with a triangular cross-section are considered. Modern methods for the production of steel profiled pipes and the principle for profiling triangular pipes are described, as well as the feasibility of profiling triangular pipes in three-roll gauges for several passes is determined. A technological diagram of the TESA 21-89 pipe electrowelding facility (PEWF) for the production of different profiles is presented. The fact that producing pipes with a triangular cross section is possible with the use of such equipment has been shown. Results for the further development of a methodology for calculating roll gauges and deformation modes when profiling a pipe with a round cross-section into a triangular one are presented.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002907","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 : 2024-02-29DOI: 10.3103/s0967091223110360
B. P. Yur’ev, V. A. Gol’tsev, V. A. Dudko
Abstract
Siderite ores of the Bakalskoe deposit contain iron, magnesium and manganese carbonates. Since the content of manganese in the ore is insignificant, its effect of the processes under consideration is not taken into account in the calculations. Siderite ores are roasted in shaft furnaces, resulting from which carbonate decomposition occurs at a high level of heat consumption. In order to optimize the operating parameters of the roasting process and to determine the required fuel consumption, a thermodynamic analysis has been carried out, which made it possible to determine the initial temperature range for the decomposition of pure iron carbonate and sideroplesite (an ore mineral containing from 70 to 95% of iron carbonate), as well as to calculate the specific and equivalent heat of the decomposition thereof with the use of an approximate solution to the phase transition problem and the data of thermographic analysis. The comparison of the results obtained in determining the specific heat has demonstrated quite a good agreement between the experimental values and the values obtained with the use of calculations. The results of this work are of interest for specialists engaged in the preparation of siderite ores for blast furnace processing.
{"title":"Studies on Thermochemical Processes Occurring under the Roasting of Siderite Ores","authors":"B. P. Yur’ev, V. A. Gol’tsev, V. A. Dudko","doi":"10.3103/s0967091223110360","DOIUrl":"https://doi.org/10.3103/s0967091223110360","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Siderite ores of the Bakalskoe deposit contain iron, magnesium and manganese carbonates. Since the content of manganese in the ore is insignificant, its effect of the processes under consideration is not taken into account in the calculations. Siderite ores are roasted in shaft furnaces, resulting from which carbonate decomposition occurs at a high level of heat consumption. In order to optimize the operating parameters of the roasting process and to determine the required fuel consumption, a thermodynamic analysis has been carried out, which made it possible to determine the initial temperature range for the decomposition of pure iron carbonate and sideroplesite (an ore mineral containing from 70 to 95% of iron carbonate), as well as to calculate the specific and equivalent heat of the decomposition thereof with the use of an approximate solution to the phase transition problem and the data of thermographic analysis. The comparison of the results obtained in determining the specific heat has demonstrated quite a good agreement between the experimental values and the values obtained with the use of calculations. The results of this work are of interest for specialists engaged in the preparation of siderite ores for blast furnace processing.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886809","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 : 2024-02-29DOI: 10.3103/s0967091223110293
A. P. Shkirmontov
Abstract
Energy and technological parameters of ferroalloy smelting under increasing furnace power are analyzed in order to improve their efficiency. When increasing the power of furnace transformers and using relatively low-grade ore materials, energy and technological parameters of slag and slag-free smelting deteriorate. It is noted that increasing the power of furnace transformers does not lead to a similar increase in the productivity of the furnace unit, because there is no expected increase in the active power in the furnace bath for the technological process. The electrode current to operating voltage ratio increases and the active resistance of the electric furnace bath decreases. As a result, the gap between the power of transformers and active power in the bath of the ferroalloy furnace increases, which adversely affects productivity. Additionally, a number of technical solutions to improve the efficiency of ferroalloy electric furnaces are considered.
{"title":"Analysis of Energy and Technological Parameters of Carbothermic Ferroalloy Smelting with Increased Power of Electric Furnaces","authors":"A. P. Shkirmontov","doi":"10.3103/s0967091223110293","DOIUrl":"https://doi.org/10.3103/s0967091223110293","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Energy and technological parameters of ferroalloy smelting under increasing furnace power are analyzed in order to improve their efficiency. When increasing the power of furnace transformers and using relatively low-grade ore materials, energy and technological parameters of slag and slag-free smelting deteriorate. It is noted that increasing the power of furnace transformers does not lead to a similar increase in the productivity of the furnace unit, because there is no expected increase in the active power in the furnace bath for the technological process. The electrode current to operating voltage ratio increases and the active resistance of the electric furnace bath decreases. As a result, the gap between the power of transformers and active power in the bath of the ferroalloy furnace increases, which adversely affects productivity. Additionally, a number of technical solutions to improve the efficiency of ferroalloy electric furnaces are considered.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886799","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 : 2024-02-29DOI: 10.3103/s0967091223110244
V. V. Ovchinnikov, O. A. Parfenovskaya, A. M. Gubin
Abstract
In friction stir welding, the rotation of the tool at the joint between the metal plates causes frictional heating and metal plasticising. Processes of intense plastic deformation effect the formation of the weld microstructure, determining strength properties. However, the main factor is the specific temperature and time conditions under which the friction stir welding process is implemented. It has been established experimentally that when temperature-time parameters are violated, defects in the form of weld discontinuities are localized at the weld-base metal boundary, the formation of which is caused by the incompatibility of the weld metal deformation and the adjacent base material. It is shown that the mechanism of destruction of a welded joint is determined by the presence of defects reducing the effective cross-section of the welded joint.
{"title":"Effect of Friction Stir Welding on the Strength of Butt Joints of Aluminum Alloy 1565ch","authors":"V. V. Ovchinnikov, O. A. Parfenovskaya, A. M. Gubin","doi":"10.3103/s0967091223110244","DOIUrl":"https://doi.org/10.3103/s0967091223110244","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In friction stir welding, the rotation of the tool at the joint between the metal plates causes frictional heating and metal plasticising. Processes of intense plastic deformation effect the formation of the weld microstructure, determining strength properties. However, the main factor is the specific temperature and time conditions under which the friction stir welding process is implemented. It has been established experimentally that when temperature-time parameters are violated, defects in the form of weld discontinuities are localized at the weld-base metal boundary, the formation of which is caused by the incompatibility of the weld metal deformation and the adjacent base material. It is shown that the mechanism of destruction of a welded joint is determined by the presence of defects reducing the effective cross-section of the welded joint.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886891","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 : 2024-02-29DOI: 10.3103/s0967091223110050
S. S. Belonozhko, G. I. Kotel’nikov, I. K. Sharafanenko, I. S. Murzin, I. T. Bilan
Abstract
The behavior of nitrogen at all technological stages of steel production in the electric furnace melting shop of JSC TAGMET was studied. The key parameters influencing the final nitrogen concentration in the finished product have been confirmed. A model has been developed for predicting the concentration of nitrogen after filling the metal charge into an EASMF.
{"title":"Study of Nitrogen Behavior at All Stages of Pipe Steel Production","authors":"S. S. Belonozhko, G. I. Kotel’nikov, I. K. Sharafanenko, I. S. Murzin, I. T. Bilan","doi":"10.3103/s0967091223110050","DOIUrl":"https://doi.org/10.3103/s0967091223110050","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The behavior of nitrogen at all technological stages of steel production in the electric furnace melting shop of JSC TAGMET was studied. The key parameters influencing the final nitrogen concentration in the finished product have been confirmed. A model has been developed for predicting the concentration of nitrogen after filling the metal charge into an EASMF.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140889871","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 : 2024-02-29DOI: 10.3103/s0967091223110189
A. A. Lapinsky, A. A. Metelkin, O. I. Shevchenko
Abstract
Possible measures to increase the productivity of oxygen converters have been considered. A short list of types of technological operations for maintaining the lining of converters has been given, and patterns of unit performance depending on the durability of the lining have been identified. By analyzing production indicators and constructing graphs based on them using approximation, it is shown that at high durability of the lining, downtimes of technological maintenance operations increase, and the productivity of the unit decreases. The optimal durability of converter linings has been calculated. Based on the calculation, the possibility of increasing the repair time for main and auxiliary equipment of the converter department at maximum load of the department has been shown. The calculation results showed a reduction in the number of downtimes for equipment repairs with a corresponding increase in unit productivity, a reduction in the cost of steel products based on savings in lining maintenance materials, as well as an annual increase in steel production indicators. The practical significance of the research and directions of development lie in the possibility of applying the considered measures on converters of any metallurgical enterprise.
{"title":"Increasing Converter Productivity by Optimizing Equipment Repair Times","authors":"A. A. Lapinsky, A. A. Metelkin, O. I. Shevchenko","doi":"10.3103/s0967091223110189","DOIUrl":"https://doi.org/10.3103/s0967091223110189","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Possible measures to increase the productivity of oxygen converters have been considered. A short list of types of technological operations for maintaining the lining of converters has been given, and patterns of unit performance depending on the durability of the lining have been identified. By analyzing production indicators and constructing graphs based on them using approximation, it is shown that at high durability of the lining, downtimes of technological maintenance operations increase, and the productivity of the unit decreases. The optimal durability of converter linings has been calculated. Based on the calculation, the possibility of increasing the repair time for main and auxiliary equipment of the converter department at maximum load of the department has been shown. The calculation results showed a reduction in the number of downtimes for equipment repairs with a corresponding increase in unit productivity, a reduction in the cost of steel products based on savings in lining maintenance materials, as well as an annual increase in steel production indicators. The practical significance of the research and directions of development lie in the possibility of applying the considered measures on converters of any metallurgical enterprise.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140011297","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 : 2024-02-29DOI: 10.3103/s0967091223110311
V. A. Toporov, P. A. Ibragimov, O. A. Panasenko, D. Sh. Nukhov, A. O. Khalezov
Abstract
In order to study the influence of technological factors on the nature of forming and the risk of metal fracture, problems of computer modeling of the process of continuous pipe rolling on the Fine Quality Mill (FQM) are formulated and solved. The solution of the problems has made it possible to assess the nature of the influence of deviation of rolling axes of the continuous mill and the extracting mill. The results of the research have made it possible to formulate and propose technical solutions to minimize the probability of risk defect.
{"title":"Development of the Mathematical Model of Continuous Pipe Rolling and Study of the Influence of Technological Factors on the Formation of Surface Defects","authors":"V. A. Toporov, P. A. Ibragimov, O. A. Panasenko, D. Sh. Nukhov, A. O. Khalezov","doi":"10.3103/s0967091223110311","DOIUrl":"https://doi.org/10.3103/s0967091223110311","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In order to study the influence of technological factors on the nature of forming and the risk of metal fracture, problems of computer modeling of the process of continuous pipe rolling on the Fine Quality Mill (FQM) are formulated and solved. The solution of the problems has made it possible to assess the nature of the influence of deviation of rolling axes of the continuous mill and the extracting mill. The results of the research have made it possible to formulate and propose technical solutions to minimize the probability of risk defect.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140011373","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 : 2024-02-29DOI: 10.3103/s0967091223110256
Yu. V. Platonov, A. V. Kozhevnikov, G. Yu. Lazarenko, D. A. Kovalev, V. A. Pimenov
Abstract
Advanced engineering approaches of the world scientific community to improve the operation of the rolling process and increase productivity by reducing the negative impact of vibration processes are considered. Production efficiency directly depends on the speed, stability and quality of rolling, therefore research to remove the limiting effects of negative oscillatory processes are constantly being carried out in all countries involved in rolling production. Particular attention is paid to vibration suppression using a non-linear control methods used in hydraulic systems, damping devices and the organization of a hybrid, uniform lubrication system for the work rolls.
{"title":"Practical Solutions to Eliminate Vibration Effects Occurring on Rolling Mill Equipment","authors":"Yu. V. Platonov, A. V. Kozhevnikov, G. Yu. Lazarenko, D. A. Kovalev, V. A. Pimenov","doi":"10.3103/s0967091223110256","DOIUrl":"https://doi.org/10.3103/s0967091223110256","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Advanced engineering approaches of the world scientific community to improve the operation of the rolling process and increase productivity by reducing the negative impact of vibration processes are considered. Production efficiency directly depends on the speed, stability and quality of rolling, therefore research to remove the limiting effects of negative oscillatory processes are constantly being carried out in all countries involved in rolling production. Particular attention is paid to vibration suppression using a non-linear control methods used in hydraulic systems, damping devices and the organization of a hybrid, uniform lubrication system for the work rolls.</p>","PeriodicalId":21903,"journal":{"name":"Steel in Translation","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886802","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号