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Intelligent method for detecting rhomboidity in continuously cast billets 连铸坯菱形度的智能检测方法
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-10-01 DOI: 10.1007/s11015-026-02136-1
D. A. Poleshchenko, D. E. Nazarov
{"title":"Intelligent method for detecting rhomboidity in continuously cast billets","authors":"D. A. Poleshchenko,&nbsp;D. E. Nazarov","doi":"10.1007/s11015-026-02136-1","DOIUrl":"10.1007/s11015-026-02136-1","url":null,"abstract":"<div><p>Enhancing product quality and reducing costs associated with manufacturing defects and other contingencies are key objectives for the industry. Over the past decade, computer vision and machine learning technologies have become increasingly popular for addressing these challenges. Using this approach to detect billet rhomboidity mitigates equipment wear. The wear occurs because the asymmetry of billets processed in subsequent stages of the technological chain increases the load on rolls and support rollers. Furthermore, the proposed method will facilitate the accumulation of a critical mass of data. This data will enable a more precise determination of the root causes of rhomboidity formation and support more effective countermeasures against these detrimental factors.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"34 - 43"},"PeriodicalIF":0.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Visualization of actual shape change and digitization of aluminum alloy slab rolling 铝合金板坯轧制实际形状变化的可视化与数字化
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-10-01 DOI: 10.1007/s11015-026-02140-5
Y. N. Loginov, S. O. Nepryakhin, K. T. Isyakaev
{"title":"Visualization of actual shape change and digitization of aluminum alloy slab rolling","authors":"Y. N. Loginov,&nbsp;S. O. Nepryakhin,&nbsp;K. T. Isyakaev","doi":"10.1007/s11015-026-02140-5","DOIUrl":"10.1007/s11015-026-02140-5","url":null,"abstract":"<div><p>During the actual rolling of aluminum alloy slabs, the ends of the workpieces were observed to develop a curved, concave shape. The radii of curvature of these ends were determined for each rolling pass. Subsequently, the rolling process was simulated using the finite element method. A comparison revealed a discrepancy between the simulated and actual results. It was hypothesized that the porosity of the metal influences the shaping of the ends. The problem was solved using two distinct approaches: the first considered porosity distributed uniformly throughout the entire volume of the ingot, while the second, based on findings from foundry engineering research, assumed porosity localized in discrete layers. The second approach yielded results that were significantly more consistent with the visualization of the actual rolling process.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"75 - 82"},"PeriodicalIF":0.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radial stress in the billet shell during steel solidification in a cylindrical mold 钢坯在圆柱形结晶器中凝固过程中的径向应力
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-10-01 DOI: 10.1007/s11015-026-02135-2
Vyacheslav V. Stulov, Andrey V. Ivanov, Oleg M. Shafiev
{"title":"Radial stress in the billet shell during steel solidification in a cylindrical mold","authors":"Vyacheslav V. Stulov,&nbsp;Andrey V. Ivanov,&nbsp;Oleg M. Shafiev","doi":"10.1007/s11015-026-02135-2","DOIUrl":"10.1007/s11015-026-02135-2","url":null,"abstract":"<div><p>Two continuous-casting molds are compared: mold No. 1 with a copper wall and water cooling and mold No. 2 with a nickel wall and an evaporation-condensation cooling system. We calculate the shell thickness at a casting speed of 3 m/min and the width of the two-phase zone and the temperature drop across the shell thickness in each mold. The temperature drop in mold No. 1 is 8–17% higher than in mold No. 2. Radial stresses are also calculated: they reach 0.77 MPa at the exit of mold No. 1, which is 10.4% higher than for mold No. 2.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"27 - 33"},"PeriodicalIF":0.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing coke breeze dosage in ore-fuel briquettes based on the assessment of their softening-melting temperature range and strength 通过对煤型煤软化-熔化温度范围和强度的评价，优化煤型煤中焦炭微风的用量
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-10-01 DOI: 10.1007/s11015-026-02146-z
A. M. Bizhanov, I. S. Bersenev
{"title":"Optimizing coke breeze dosage in ore-fuel briquettes based on the assessment of their softening-melting temperature range and strength","authors":"A. M. Bizhanov,&nbsp;I. S. Bersenev","doi":"10.1007/s11015-026-02146-z","DOIUrl":"10.1007/s11015-026-02146-z","url":null,"abstract":"<div><p>We study the effect of coke breeze dosage on the properties of ore-fuel briquettes based on poor iron ore and rich hematite concentrate. The softening-melting temperature range (SMTR) and compressive strength of fired briquettes are determined by the methods of physical modeling. It is shown that the elevation of the fuel dosage over 10% leads to a significant enlargement of the SMTR and to a decrease in compressive strength caused by the intensification of reduction processes and elevation of porosity. For ore briquettes, the optimal dosage is equal to 10%, whereas for the concentrate briquettes, it is as low as 5%. It is shown that the use of finely divided fuel (soot) with a specific surface area larger than 0.01 m<sup>2</sup>/g leads to a sharp decrease in the level of strength after heat treatment. We also formulate recommendations concerning the limitation of dosage and the size of fuel particles in briquettes for blast-furnace smelting.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"140 - 148"},"PeriodicalIF":0.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid model for calculating setup parameters in the piercing process for continuously cast ingots 计算连铸钢锭穿孔过程中设置参数的混合模型
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-09-29 DOI: 10.1007/s11015-026-02128-1
I. Yu. Pyshmintsev, A. A. Korsakov, D. V. Mikhalkin, E. A. Shkuratov, E. R. Guseynov, K. P. Pyankov, O. A. Panasenko
{"title":"Hybrid model for calculating setup parameters in the piercing process for continuously cast ingots","authors":"I. Yu. Pyshmintsev,&nbsp;A. A. Korsakov,&nbsp;D. V. Mikhalkin,&nbsp;E. A. Shkuratov,&nbsp;E. R. Guseynov,&nbsp;K. P. Pyankov,&nbsp;O. A. Panasenko","doi":"10.1007/s11015-026-02128-1","DOIUrl":"10.1007/s11015-026-02128-1","url":null,"abstract":"<div><p>The need for mathematical models that ensure high accuracy in calculating the setup parameters of key mill units is increasing in the context of digital transformation in tube rolling and the active implementation of digital twin technologies. Describing the geometry of the deformation zone in helical rolling piercing mills is particularly challenging because the roll profile becomes distorted through rotation via the feed and spread angles. This paper presents a hybrid model combining an analytical roll profile description with a machine vision-based automated system to monitor shell geometric parameters. Implementing the model in a software package allows for the automated, real-time determination of shell length and diameter. It also enables the generation of recommendations for adjusting setup parameters. This approach improves the precision and stability of the piercing process, reduces technological errors, and paves the way for integrating adaptive control systems into continuous rolling lines.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 12","pages":"1986 - 1995"},"PeriodicalIF":0.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of an efficient process route for producing K65 (X80) steel for pipes with high strain capacity 高应变能力钢管用K65 （X80）钢高效工艺路线的开发
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-09-29 DOI: 10.1007/s11015-026-02114-7
Maksim Yu. Matrosov, Petr A. Mishnev, Maksim S. Sakharov, Grigoriy E. Khadeev, Vitaliy K. Lipin, Ekaterina V. Shulga
{"title":"Development of an efficient process route for producing K65 (X80) steel for pipes with high strain capacity","authors":"Maksim Yu. Matrosov,&nbsp;Petr A. Mishnev,&nbsp;Maksim S. Sakharov,&nbsp;Grigoriy E. Khadeev,&nbsp;Vitaliy K. Lipin,&nbsp;Ekaterina V. Shulga","doi":"10.1007/s11015-026-02114-7","DOIUrl":"10.1007/s11015-026-02114-7","url":null,"abstract":"<div><p>Laboratory rolling tests and industrial trials on Severstal Mill 5000 were performed to produce various microstructures in K65 (X80) steel using modified accelerated-cooling schedules. The resulting microstructures were examined, and the temperature ranges for forming the main phases and constituents (ferrite, bainite, martensite, and the M/A constituent) were identified. The results show that promoting secondary constituents containing M/A, rather than cementite-containing constituents in the ferritic matrix, increases strength, modifies the stress–strain response, and reduces the YS/TS ratio without loss of ductility or low-temperature toughness. A low-temperature plate-cooling route was developed to obtain a microstructure consisting of a ferritic matrix with carbide-free bainite and an M/A constituent. Manufacturing 1420-mm-diameter pipes confirmed the favorable effect of this microstructure on the mechanical properties of the pipe metal after forming and expansion. Overall, the study enabled an industrial process for producing plates from K65 (X80) steel for pipes with a diameter of 1420 mm and a wall thickness of 27.7–33.4 mm, providing high uniform elongation, a smooth stress–strain curve, and high strain capacity.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 12","pages":"1846 - 1857"},"PeriodicalIF":0.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of finished steel strip crown with respect to transfer bar geometry 成品钢带冠的转移杆几何形状的评价
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-09-29 DOI: 10.1007/s11015-026-02138-z
D. L. Shalaevsky
{"title":"Evaluation of finished steel strip crown with respect to transfer bar geometry","authors":"D. L. Shalaevsky","doi":"10.1007/s11015-026-02138-z","DOIUrl":"10.1007/s11015-026-02138-z","url":null,"abstract":"<div><p>The cross-sectional profile of a rolled steel strip is a critical characteristic that influences the quality of finished stamped or bent products. This study addresses the calculation of cross-sectional shape parameters for finished flat rolled products in a multi-stand mill, taking into account the cross-sectional profile of the transfer bar. The influence of the transfer bar cross-sectional profile on the corresponding parameter of the finished strip is demonstrated. In assessing the cross-sectional profile of the finished strip, the primary known influencing factors were considered; notably, the effect of roll bending force on the shape of the roll gap was evaluated—an aspect omitted in some existing methodologies.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"52 - 60"},"PeriodicalIF":0.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a method for calculating thermal stresses in the rollers of a continuous casting machine under transient thermal operating conditions 发展了一种计算瞬态热操作条件下连铸机轧辊热应力的方法
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-09-29 DOI: 10.1007/s11015-026-02133-4
Ivan D. Pospelov, David I. Gabelaia
{"title":"Development of a method for calculating thermal stresses in the rollers of a continuous casting machine under transient thermal operating conditions","authors":"Ivan D. Pospelov,&nbsp;David I. Gabelaia","doi":"10.1007/s11015-026-02133-4","DOIUrl":"10.1007/s11015-026-02133-4","url":null,"abstract":"<div><p>A method for calculating thermal stresses in the rollers of a continuous-casting machine can be developed by refining an existing mathematical model originally proposed for the rolls of cold-rolling mills. The model relies on the analytical solution of the elasticity equations and assumes an axisymmetric temperature field. A key difficulty is that the roller surface-temperature history cannot be prescribed a priori because it depends on the CCM operating conditions and varies in a complex manner during casting. Therefore, only the shape of the temperature-time curve is assumed known and is specified as a piecewise-linear function, <i>φ</i>(<i>τ</i>). The paper reports calculated thermal stresses. The most critical tensile stresses arise in the wall of the roller’s water-cooled axial channel with dimensionless radius <i>ρ</i> = 0.28 and reach <i>σ</i><sub>t1</sub> = <i>σ</i><sub>z1</sub> = 1033–1155.5 MPa.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"20 - 26"},"PeriodicalIF":0.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving steel transfer during continuous casting to increase product quality, yield, and process stability 改善连铸过程中的钢转移，提高产品质量、成品率和工艺稳定性
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-09-29 DOI: 10.1007/s11015-026-02134-3
Sergey V. Kuberskii
{"title":"Improving steel transfer during continuous casting to increase product quality, yield, and process stability","authors":"Sergey V. Kuberskii","doi":"10.1007/s11015-026-02134-3","DOIUrl":"10.1007/s11015-026-02134-3","url":null,"abstract":"<div><p>The paper analyzes the performance of an early breakout detection and prevention system (BDPS) during continuous casting of slabs. The BDPS triggers most often at the beginning and end of steel teeming from the steel ladle and tundish, which is associated with shell sticking to the mold wall. The primary cause is inadequate lubrication at the mold-shell interface due to higher viscosity of the molten mold flux in the mold and its nonuniform flow into the gap. The deterioration in lubrication is attributed to vortex formation during the final stage of ladle draining, which entrains ladle slag and carries it into the tundish and the mold. The study identifies the key process parameters that govern slag entrainment into the mold and proposes optimization measures. To improve process stability, reduce steel losses to ladle slag, and enhance product quality, the paper proposes a revised ladle-bottom lining layout and improved steel-transfer practices.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"70 1","pages":"9 - 19"},"PeriodicalIF":0.9,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149219447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microstructural evolution in 38KhS steel under different heat treatment regimes 38KhS钢在不同热处理条件下的组织演变
IF 0.9 4区 材料科学
Metallurgist Pub Date : 2026-09-18 DOI: 10.1007/s11015-026-02115-6
A. A. Kovaleva, T. R. Gilmanshina, D. Yu. Kritsky, M. P. Bundin
{"title":"Microstructural evolution in 38KhS steel under different heat treatment regimes","authors":"A. A. Kovaleva,&nbsp;T. R. Gilmanshina,&nbsp;D. Yu. Kritsky,&nbsp;M. P. Bundin","doi":"10.1007/s11015-026-02115-6","DOIUrl":"10.1007/s11015-026-02115-6","url":null,"abstract":"<div><p>A high-temperature heat treatment process is proposed for alloyed structural steel 38KhS. This method integrates forging with quenching from temperatures of 910–1000 °C, using a sequential water-air cooling medium, followed by tempering in water at 550–650 °C. This process maintains the original mechanical properties of the steel. Implementing this technology eliminates the need for a dedicated quenching furnace and replaces the quenching medium with a water-air sequence.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 12","pages":"1867 - 1872"},"PeriodicalIF":0.9,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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