CIS Iron and Steel Review最新文献

{"title":"Study of possibility of magnetic hydrocyclone use in concentration cycles of oxidized ferriferous quartzites","authors":"V. Lvov, T. Aleksandrova, V. Kuskov, A. Pelevin","doi":"10.17580/cisisr.2022.01.01","DOIUrl":"https://doi.org/10.17580/cisisr.2022.01.01","url":null,"abstract":"Iron role is very essential in the up-to-date economics. Magnetite quartzites are the main source of iron making in Russia. Oxidized ferriferous quartzites are also used for accumulation of the Russian mineral and raw material base. Substantial composition and concentration capacity of the represented sample of oxidized iron ore are examined. Ore sample was ground during two stages in a ball mill and IsaMill mill. Comminuted material was classified in magnetic hydrocyclone of original construction. Magnetic system, which was mounted on the hydrocyclone, had been designed using computer software ANSYS Maxwell for simulation of electromagnetic fields and had been manufactured with use of permanent magnets made of Nd–Fe–B alloys on the base of rare earth elements. Classifying products in magnetic hydrocyclone were concentrated consequently in low- and high-intensive magnetic fields. Technological scheme for concentration of oxidized ferriferous quartzites was developed. This scheme allows to produce high-quality magnetite concentrate, hematite concentrate and mixed hematite – magnetite concentrate. magnetic separation, high-gradient magnetic separation, oxidized ferriferous quartzites.","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67409191","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":"Modelling of the sheet forming while 3-roller bending process","authors":"G. P. Zhigulev, M. M. Skripalenko, V. A. Fadeev, M. N. Skripalenko, V. N. Danilin","doi":"10.17580/cisisr.2022.01.09","DOIUrl":"https://doi.org/10.17580/cisisr.2022.01.09","url":null,"abstract":"3-roller bending process was investigated using physical modelling and computer simulation. Main technological parameters influence on the formation of tube billet diameter are present; these main technological parameters are upper roller displacement and distance between axes of bearing rollers. Complete factorial experiment was conducted using bending machine, radius of the produced tube billet was set as response function. Conditions for conducting the complete factorial experiment using bending machine and techniques of tube billet radius estimation by graphical-analytical method are presented. At that least square method and SolidWorks software were applied. Regression equations for calculating tube billet diameter conditionally upper roller displacement and distance between axes of bearing rollers were obtained. Influence of these two factors on tube billet radius formation was demonstrated. Finite element method (FEM) computer simulation of the forming process was done with respect to parameters corresponding to parameters of physical modelling experiment using bending machine. FEM computer simulation was done using QForm software. QForm simulation was realized for elastic-plastic bending in terms of two-dimensional deformation. Point tracking was applied to calculate coordinates of the points of the formed sheet and bending parameters. It allowed estimation of the neutral line location in the formed sheet when bending stage was finished. Presented results of computer simulation are figures with trajectories of the tracked points; figures illustrating changing of distance between tracked points; graph of accumulated strain changing through sheet’s thickness. New criterion for neutral line (neutral surface) was proposed for sheet bending process. Results of the research can be effective when exploring Heausler AG bending equipment.","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47774584","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":"Structure and properties of additive products manufactured from electroerosion powders","authors":"E. Ageev, E. Ageeva, A. Altukhov","doi":"10.17580/cisisr.2022.01.17","DOIUrl":"https://doi.org/10.17580/cisisr.2022.01.17","url":null,"abstract":"The paper considers the possibility of using electroerosion metal powders based on the Co-Cr alloy with different properties in additive technologies. Use of these powders opens up great opportunities for improving the technical and economic characteristics of products, and will contribute to a significant increase in their reliability, durability, weight reduction, reduction of manufacture and operation costs. The economic efficiency of the use of electroerosion cobalt-chromium powders is due to the use of waste and low energy-intensive technology for their production. The aim of this work is studying the technology of powder fusion obtained by electroerosion dispersion of cobalt-chromium alloy waste in alcohol, on porosity, microhardness and roughness of additive products. The process of electrodispersion, i.e. grinding of the KKhMS \"Cellite\" alloy (63 % Co, 27 % Cr, 5 % Mo, 2 % Ni, 2 % Fe) was carried out on an original patented installation. After dispersion of cobalt-chromium alloy waste, its destruction occurred as a result of local exposure to short-term electrical discharges between the electrodes located in the working fluid, with formation of powder particles. Butyl alcohol was used as the working fluid. The fusion of electroerosion cobalt-chromium powders was carried out by plasma on the original installation for layer-by-layer deposition, which allows varying the technological parameters of the process: the nozzle transition speed (mm/min), the distance between the nozzle and the construction zone (mm), and the fusion temperature (°C). Based on a set of experimental studies, it was found that the melting temperature of particles of electroerosion cobalt-chromium powder practically does not effect on varying in the elemental and phase composition of samples; at the same time, with an increase of the melting temperature, the pores size and their number decrease, as well as an increase of microhardness with decrease of the height of irregularities and roughness in general are observed.","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49594031","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":"Use of experimental casting equipment for research of castings crystallized through individual cooling procedures","authors":"N. I. Gabelchenko, A. Belov, N. A. Kidalov, S. R. Polyak","doi":"10.17580/cisisr.2022.01.04","DOIUrl":"https://doi.org/10.17580/cisisr.2022.01.04","url":null,"abstract":"","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48796412","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":"Development of new composition for sHSS steel used for hot rolling mill rolls at Magnitogorsk Iron and Steel Works","authors":"V. Kolokoltsev, N. A. Feoktistov, A. S. Savinov, E. Skripkin","doi":"10.17580/cisisr.2022.01.05","DOIUrl":"https://doi.org/10.17580/cisisr.2022.01.05","url":null,"abstract":"The paper presents the results of the complex scientific and research work directed on development of the new composition of sHSS steel for rolling mill rolls together with Magnito-gorsk Iron and Steel Works (MMK) and Magnitogorsk Mill Rolls Plant (MZPV). The first part includes the review of technical literature in the field of the results of roll steel examination by domestic and foreign researchers, investigation of structure and determination of properties of foreign rolling rolls, which were operated at the MMK hot rolling mill. The minimal level od sHSS steel properties for the working layer of a rolling roll, providing its operation reliability, is also determined. Laboratorial experiments were conducted at the second stage. The formed massif of ex-perimental data was processed using neural net, and as a result, the optimal chemical composition of the roll steel with high wear resistance and hardness was obtained. After processing of the re-sults of the planned experiment, the regression equation was obtained; it describes influence of the alloy chemical composition on wear resistance and hardness coefficients. Optimized composition of the alloy was developed at Magnitogorsk Mill Rolls Plant; it wad resulted in manufacture of the pilot roll sleeve in centrifugal machine. This roll sleeve was subjected to heat treatment according to the standard plant procedure. The final step included laboratorial testing of the pilot roll sleeve which was manufac-tured from steel with optimized chemical composition. It was determined that the developed composition is characterized by wear resistance increased by 27 % in comparison with the re-searched foreign analogue, as well as by similar qualitative parameters of the alloy microstructure.","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47257679","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":"Providing steel with an approximate application of the mechanical properties of wire rod 5.5-6.5 mm from sreel grades 70-75 based on a conventional twin of the Stelmor process","authors":"A. Moller, O. Tulupov, S. A. Levandovskiy, D. Nazarov","doi":"10.17580/cisisr.2022.01.06","DOIUrl":"https://doi.org/10.17580/cisisr.2022.01.06","url":null,"abstract":"the air-cooling line of Mill of PJSC MMK (Magnitogorsk Iron and Steel Works) was upgraded. The main task of modernization was to obtain wire rod sorbitized in the initial state. The use of such products makes it possible to abandon one intermediate heat treatment operation in the wire production process, and should also ensure the stability of the mechanical properties of the finished wire of the entire size range of OJSC MMK-METIZ. On the part of OJSC MMK-METIZ, the following high requirements were imposed on the uniformity of the mechanical properties of the wire rod obtained at the mill - no more than 40 N/mm 2 along the length of the convolution, 50 N/mm 2 along the length of the coil, 60 N/mm 2 within the melt. When analyzing samples of rolled products from steel grades 70-75 with a diameter of 5.5-6.5 mm, it was found that compliance with the requirements in the modes operating at the mill is difficult. on the development of wire rod production technology using a digital twin of an air cooling line, a mathematical model was developed, the adequacy of which was proved by developing rolling modes based on it, followed by evaluation of the resulting product. Upon further analysis of the obtained rolled products, it was found that the products manufactured according to the new modes meet the requirements for uneven mechanical properties along the length of the convolution and the coil to a greater extent.","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41960186","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":"Calculation and experimental technique for evaluating the parameters of the contact interaction of a strip billet with a roll tool in the ERW mill lines","authors":"S. V. Samusev, V. A. Fadeev, A. Budnikov, M. B. Savonkin","doi":"10.17580/cisisr.2021.02.06","DOIUrl":"https://doi.org/10.17580/cisisr.2021.02.06","url":null,"abstract":"","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42972353","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":"Features of research of iron ore thermal decarbonization kinetics during roasting","authors":"Dli M. I., Bobkov V. I., Kulyasov N. S., Sokolov A. M.","doi":"10.17580/cisisr.2021.02.01","DOIUrl":"https://doi.org/10.17580/cisisr.2021.02.01","url":null,"abstract":"Prediction of availability of iron ore raw material for heat treatment, selection of powerand resource-efficient technological routes, operating procedures and their adaptation to periodically varying properties of iron ore raw material meet the lack of calculation techniques for thermal preparation and processing operations that rather completely take into account special features of this material. The data on thermal decarbonization kinetics, strictly required for quantitative calculations of chemical-metallurgical processes in the industrial roasting machines and ore smelting furnaces, are insufficiently substantiated and contradictory. Iron-bearing ores and minerals have complicated and heterogeneous polymineral composition. Source minerals, being subjected to heating, are characterized by physical-chemical transformations and mutual reactions; it leads to variations in composition and structure of materials, to appearance of heating effects and finalizes in accompanying by deep variations of thermal-physical parameters (TPP), such as heat capacity, temperature conductivity and heat conductivity. As soon as thermally activated chemical-metallurgical processes are determined by kinetic regularities and depend on heating conditions, TPP of iron ore raw material acquire complicated, temperature-temporal or temperature-concentrating type of relationships. Especial methodical difficulties are arising also during examination of calcination kinetics of bulk and pelletized iron ore raw material, because the results of investigations are influenced by the heat exchange processes in the samples. Lack of information about decarbonization kinetics of iron ore raw material as well as about the effect of chemical and mineralogical composition, material structure and heating rate on calcination process don’t allow to use the existing literature data on the results of thermal analytical researches of separate types of iron ore raw material and “clean” carbonate materials for description of calcination process of iron ore raw material [1–3]. Thereby, experimental investigation of the processes of carbonates dissociation with use of samples saving their initial material structure within the temperature range close to practical range is required for establishing the general regularities of calcination chemicalmetallurgical process [4, 5]. It can be found out e.g. in the area of high-temperature roasting of iron ore pellets in roasting conveyor-type machine or in sintered layer on the belt of a sintering machine [6, 7]. The first condition provides restriction on the minimal dimensions and shape of samples. Dimensions of samples should exceed substantially grain size of source minerals of typical dimension of structure of the examined material during all experiments [8, 9]. Shape of a sample should be chosen based on minimization of distorting influence of mechanical activation of surfacial inclusions, i.e. the relationship “sample surface / sample volume” shoul","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49167114","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":"Structure and properties of powder alloys Fe–(45-15)%Ni–(10-5)%Cu, obtained via mechanical alloying","authors":"P. Loginov, E. N. Avdeenko, A. Zaitsev, E. Levashov","doi":"10.17580/cisisr.2021.02.15","DOIUrl":"https://doi.org/10.17580/cisisr.2021.02.15","url":null,"abstract":"It is known that operating properties of metal matrix diamond-bearing composites for cutting are mainly determined by metallic matrix properties [1, 2]. A metal matrix (binding) should provide strong fixing of diamond grains during cutting (from one side) and be wear-resistant for stable operation of a diamond tool in stationary self-sharpening procedure (from other side) [3–6]. Additionally, binding should allow to obtain diamond-bearing segments at relatively low temperatures (usually below 900 °С, to avoid substantial graphitization of diamond grains during sintering) [7–9], as well as to have high heat conductivity for efficient heat removal from the cutting area [10] and also be characterized by sufficient stiffness to prevent incorporation of diamond grains into binding during cutting. Thereby, selection of optimal composition of binding alloy is considered as the complex material science problem because the requirements for such materials are various and often contradictory. Fe-based alloys are prospective for use as matrix material for cutting diamond tools [11–13]. Pure ferrous powders for manufacture of diamond segments can’t be used on the following causes. Due to high melting temperature (Tm=1539 °С), ferrous powders are hardly sinStructure and properties of powder alloys Fe–(45-15)%Ni–(10-5)%Cu, obtained via mechanical alloying","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49582855","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":"Structural variations on the surface of metallic products at laser marking","authors":"D. A. Konchus, E. Pryakhin, A. Sivenkov","doi":"10.17580/cisisr.2021.02.18","DOIUrl":"https://doi.org/10.17580/cisisr.2021.02.18","url":null,"abstract":"There are many various methods for marking application. For example, labels which are glued on package or directly on products, can be manufactured by printing. The labels which have the form of carrier are often molten to mark plastic products [1, 2]. However, such methods are not reliable, because applied marking is rubbing and damaging during product operation and can be replaced easily. Therefore, use of direct marking methods is required, when information is located just on the surface of finished product. Embossing and stamping can be mentioned as such direct methods, but they are just out-of-date. Electrochemical marking is also considered as direct method, but the most demanded and up-to-date technique is now various engraving, e. g. laser engraving [3, 4]. Efficiency of laser engraving use is determined by its workability, by high marking speed of products, by contactless operation, by stability and reliability of image, by suitability of apprehension and by possibility of control for legality of products using created electronic data bases [5, 6]. Action of laser emission on variation of the state of marking product is the main mechanism of laser marking. When laser emission effects on different materials (both metallic and non-metallic), local heating appears; partial melting and evaporation of material from the surface contact point [7]. If we move laser beam along the sample surface, we get any visible image presented by signs, pictures, letters and figures [8, 9]. This research used QR codes as the image applied during marking; they are widely used for marking the finished products. Structural variations on the surface of metallic products at laser marking","PeriodicalId":10210,"journal":{"name":"CIS Iron and Steel Review","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47796133","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}