Pub Date : 2024-02-08DOI: 10.1080/03019233.2024.2316495
Published in Ironmaking & Steelmaking: Processes, Products and Applications (Ahead of Print, 2024)
发表于《炼铁与炼钢》：工艺、产品和应用》（2024 年，提前出版）
{"title":"Statement of Retraction: The effect of laminar cooling heat transfer coefficient on the temperature field of steel plate","authors":"","doi":"10.1080/03019233.2024.2316495","DOIUrl":"https://doi.org/10.1080/03019233.2024.2316495","url":null,"abstract":"Published in Ironmaking & Steelmaking: Processes, Products and Applications (Ahead of Print, 2024)","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"10 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139759996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Utilizing high-reactivity coke is a critical approach for low-carbon iron-making. In this study, we investigated the effect of coke reactivity on reduction behavior and non-isothermal kinetics of s...
利用高活性焦炭是低碳炼铁的重要途径。在本研究中，我们研究了焦炭反应性对s…
{"title":"Effect of coke reactivity on reduction behaviours and non-isothermal kinetics of sinter at 1173–1373 K","authors":"Ruijun Yan, Zhenggen Liu, Mansheng Chu, Peijun Liu, Shuai Dang, Ninghui Li, Xiufeng Li","doi":"10.1080/03019233.2023.2266263","DOIUrl":"https://doi.org/10.1080/03019233.2023.2266263","url":null,"abstract":"Utilizing high-reactivity coke is a critical approach for low-carbon iron-making. In this study, we investigated the effect of coke reactivity on reduction behavior and non-isothermal kinetics of s...","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"25 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138524502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-29DOI: 10.1080/03019233.2023.2266264
Jixuan Zhao, Hangyu Zhu, Lingen Luo, Ji Chen, Zhihao Zheng
{"title":"Motion behaviour of solid inclusions at the steel–slag interface in high-Al steel","authors":"Jixuan Zhao, Hangyu Zhu, Lingen Luo, Ji Chen, Zhihao Zheng","doi":"10.1080/03019233.2023.2266264","DOIUrl":"https://doi.org/10.1080/03019233.2023.2266264","url":null,"abstract":"","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136157341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-13DOI: 10.1080/03019233.2023.2266262
Xufeng Qin, Changgui Cheng, Yang Li, Chunming Zhang, Yan Jin
ABSTRACTIn this study, a new, simple-structured swirling flow pocket brick (SFPB) equipped on the upper nozzle of a tundish is proposed. Numerical simulations are performed to investigate the effect of the SFPB on the liquid steel flow in the tundish and nozzle in comparison with that in a conventional tundish. The results indicate that the SFPB can reduce the dead volume fraction, increase the mixed flow volume with low risk of slag entrapment in the tundish, and generate a swirling flow in the nozzle. As the distance from the nozzle inlet increases, the swirling velocity decreases and the static pressure in the nozzle section increases. A higher velocity and static pressure are recorded in the near-wall region at the upper part of the nozzle, where the turbulent kinetic energy decreases significantly from 0.037 m2 s−2 in a conventional tundish nozzle to 0.013 m2 s−2 in the proposed SFPB tundish..KEYWORDS: Swirling flowtundishnozzlewall shear stresspocket brickresidence time distributionnumerical simulationcontinuous casting Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China [grant numbers 51974213, 51874215].
{"title":"Numerical study on a new swirling flow pocket brick for tundish upper nozzle during continuous casting of steel","authors":"Xufeng Qin, Changgui Cheng, Yang Li, Chunming Zhang, Yan Jin","doi":"10.1080/03019233.2023.2266262","DOIUrl":"https://doi.org/10.1080/03019233.2023.2266262","url":null,"abstract":"ABSTRACTIn this study, a new, simple-structured swirling flow pocket brick (SFPB) equipped on the upper nozzle of a tundish is proposed. Numerical simulations are performed to investigate the effect of the SFPB on the liquid steel flow in the tundish and nozzle in comparison with that in a conventional tundish. The results indicate that the SFPB can reduce the dead volume fraction, increase the mixed flow volume with low risk of slag entrapment in the tundish, and generate a swirling flow in the nozzle. As the distance from the nozzle inlet increases, the swirling velocity decreases and the static pressure in the nozzle section increases. A higher velocity and static pressure are recorded in the near-wall region at the upper part of the nozzle, where the turbulent kinetic energy decreases significantly from 0.037 m2 s−2 in a conventional tundish nozzle to 0.013 m2 s−2 in the proposed SFPB tundish..KEYWORDS: Swirling flowtundishnozzlewall shear stresspocket brickresidence time distributionnumerical simulationcontinuous casting Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China [grant numbers 51974213, 51874215].","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135854805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.1080/03019233.2023.2222255
Xiaoliang Gao, Hong-Yao Wei, Q. Ren, Lifeng Zhang
ABSTRACT MnS precipitates in resulfurized free-cutting steels are elongated in the rolling direction and then have a large size in length. It is difficult to accurately obtain the characteristics especially full length of MnS by two-dimensional observation. Three-dimensional morphology of MnS in a Ca-treated resulfurized free-cutting steel was investigated by using tensile method and scanning electron microscopy. Compared with the statistical results of MnS in two-dimension, the size in three-dimension was larger. In two-dimension image, the length of MnS was in the range of ~100 μm, and the percent of MnS with size in the rage of 50~100 μm was about 1.15%. In three-dimension image, however, the length of MnS observed was in the range of ~325 μm, and the percent of MnS with size larger than 100 μm was about 5.73%. The results provide an insight into the role of fracture surface analysis in MnS characterization in resulfurized free-cutting steels.
{"title":"Characterization of the three-dimensional morphology of MnS precipitate in Ca-treated resulphurized free-cutting steel via fracture surface analysis","authors":"Xiaoliang Gao, Hong-Yao Wei, Q. Ren, Lifeng Zhang","doi":"10.1080/03019233.2023.2222255","DOIUrl":"https://doi.org/10.1080/03019233.2023.2222255","url":null,"abstract":"ABSTRACT MnS precipitates in resulfurized free-cutting steels are elongated in the rolling direction and then have a large size in length. It is difficult to accurately obtain the characteristics especially full length of MnS by two-dimensional observation. Three-dimensional morphology of MnS in a Ca-treated resulfurized free-cutting steel was investigated by using tensile method and scanning electron microscopy. Compared with the statistical results of MnS in two-dimension, the size in three-dimension was larger. In two-dimension image, the length of MnS was in the range of ~100 μm, and the percent of MnS with size in the rage of 50~100 μm was about 1.15%. In three-dimension image, however, the length of MnS observed was in the range of ~325 μm, and the percent of MnS with size larger than 100 μm was about 5.73%. The results provide an insight into the role of fracture surface analysis in MnS characterization in resulfurized free-cutting steels.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"50 1","pages":"1401 - 1409"},"PeriodicalIF":2.1,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48808378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-14DOI: 10.1080/03019233.2023.2219955
Ayat Jafarzadeh, Toraj Adhami, H. Farhadi, Mojtaba Allahkarampour, Hossein Farmani, Niromand Jasimi, Hamed Soltani, H. Ghafarirad, A. Taghvaeipour
ABSTRACT This paper targets at the calculation of in-service deformation of a flange in a billet continuous casting machine due to thermal loading. In this regard, first, the thermal analyses of the mould will be thoroughly and accurately conducted. Henceforth, the heat flux profile from the melt to the mould is derived from the literature and, based on the limited temperature measurements, it is calibrated for the understudy mould. Moreover, for the upper part of the meniscus, the effect of radiation is considered as a heat flux profile with an exponential function. Subsequently, the thermo-mechanical analysis is conducted by applying the thermal load, as a temperature distribution, on the corresponding finite element (FE) model. The results of the analysis for the critical flange showed that the calculated deformation at the critical point, 1.08 mm, is close to the value reported by the manufacturer which is 1.25 mm.
{"title":"Thermo-mechanical analysis of the flange in a Billet continuous casting machine based on limited temperature measurements","authors":"Ayat Jafarzadeh, Toraj Adhami, H. Farhadi, Mojtaba Allahkarampour, Hossein Farmani, Niromand Jasimi, Hamed Soltani, H. Ghafarirad, A. Taghvaeipour","doi":"10.1080/03019233.2023.2219955","DOIUrl":"https://doi.org/10.1080/03019233.2023.2219955","url":null,"abstract":"ABSTRACT This paper targets at the calculation of in-service deformation of a flange in a billet continuous casting machine due to thermal loading. In this regard, first, the thermal analyses of the mould will be thoroughly and accurately conducted. Henceforth, the heat flux profile from the melt to the mould is derived from the literature and, based on the limited temperature measurements, it is calibrated for the understudy mould. Moreover, for the upper part of the meniscus, the effect of radiation is considered as a heat flux profile with an exponential function. Subsequently, the thermo-mechanical analysis is conducted by applying the thermal load, as a temperature distribution, on the corresponding finite element (FE) model. The results of the analysis for the critical flange showed that the calculated deformation at the critical point, 1.08 mm, is close to the value reported by the manufacturer which is 1.25 mm.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"50 1","pages":"848 - 856"},"PeriodicalIF":2.1,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46132865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-14DOI: 10.1080/03019233.2023.2221940
Ziwen Yan, Zhiyin Deng, Miao‐yong Zhu
ABSTRACT The volatilization behaviour of CaCl2-containing basic oxygen furnace (BOF) slags was investigated in laboratory at steelmaking temperature. During the melting process, the volatilization ratio was measured, and the volatile compounds were collected with some conductive tapes. Thermogravimetric analysis was conducted to clarify the volatilization of CaCl2-containing slags, and the volatilization ratio was also calculated by the thermodynamic software HSC. It was found that volatilization takes place in both CaCl2-containing and CaF2-containing BOF slags, but their influential mechanisms are different. FeCl2 is the main volatile compound in CaCl2-containing BOF slags. The increasing contents of CaCl2 and FeO in these slags are favourable for volatilization, while higher slag basicity plays the opposite role. In the case of CaF2-containing BOF slags, the volatilization compounds have little relation to the FeO content in the slags, and the volatilization ratio is smaller than that of CaCl2-containing BOF slag.
{"title":"Study on volatilization behaviour of BOF converter slag containing CaCl2","authors":"Ziwen Yan, Zhiyin Deng, Miao‐yong Zhu","doi":"10.1080/03019233.2023.2221940","DOIUrl":"https://doi.org/10.1080/03019233.2023.2221940","url":null,"abstract":"ABSTRACT The volatilization behaviour of CaCl2-containing basic oxygen furnace (BOF) slags was investigated in laboratory at steelmaking temperature. During the melting process, the volatilization ratio was measured, and the volatile compounds were collected with some conductive tapes. Thermogravimetric analysis was conducted to clarify the volatilization of CaCl2-containing slags, and the volatilization ratio was also calculated by the thermodynamic software HSC. It was found that volatilization takes place in both CaCl2-containing and CaF2-containing BOF slags, but their influential mechanisms are different. FeCl2 is the main volatile compound in CaCl2-containing BOF slags. The increasing contents of CaCl2 and FeO in these slags are favourable for volatilization, while higher slag basicity plays the opposite role. In the case of CaF2-containing BOF slags, the volatilization compounds have little relation to the FeO content in the slags, and the volatilization ratio is smaller than that of CaCl2-containing BOF slag.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"50 1","pages":"900 - 907"},"PeriodicalIF":2.1,"publicationDate":"2023-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45713153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-09DOI: 10.1080/03019233.2023.2218247
Lidong Xing, Wei Xiao, Y. Bao, Min Wang, X. Ai
ABSTRACT A quarter scale water model experiment is employed to investigate the effect of single and double porous plug placement and blowing flow rates on the mixing time, slag eye area, and slag entrapment depth. As a result, when the blowing flow rate is greater than 180 L min–1, the blowing effect of double blowing plugs is better than that of single blowing plugs. The open eye area and slag entrapment depth in the double blow plug arrangement are smaller than that in the single blow plug arrangement. In general, the ladle refining effect is better when the blow plug is arranged at 0.4R position and the angle between the two blow plugs is 120°. The final recommended argon blowing process is 240–300 L min–1 for the heating and alloying process and 60–120 L min–1 for the soft blowing process, respectively.
摘要采用四分之一尺度的水模型实验，研究了单孔和双孔塞的放置和吹送流量对混合时间、渣眼面积和夹渣深度的影响。结果，当吹风流量大于180L时 min–1，双吹塞的吹制效果优于单吹塞。双吹塞布置中的开孔面积和夹渣深度小于单吹塞布置。一般情况下，当吹塞布置在0.4R位置，两个吹塞之间的角度为120°时，钢包精炼效果更好。最终推荐的吹氩工艺为240–300 L 加热和合金化过程的最小值为1，60–120 L min–1分别用于软吹气过程。
{"title":"Process optimization of bottom-blown argon for 130t ladle furnace","authors":"Lidong Xing, Wei Xiao, Y. Bao, Min Wang, X. Ai","doi":"10.1080/03019233.2023.2218247","DOIUrl":"https://doi.org/10.1080/03019233.2023.2218247","url":null,"abstract":"ABSTRACT A quarter scale water model experiment is employed to investigate the effect of single and double porous plug placement and blowing flow rates on the mixing time, slag eye area, and slag entrapment depth. As a result, when the blowing flow rate is greater than 180 L min–1, the blowing effect of double blowing plugs is better than that of single blowing plugs. The open eye area and slag entrapment depth in the double blow plug arrangement are smaller than that in the single blow plug arrangement. In general, the ladle refining effect is better when the blow plug is arranged at 0.4R position and the angle between the two blow plugs is 120°. The final recommended argon blowing process is 240–300 L min–1 for the heating and alloying process and 60–120 L min–1 for the soft blowing process, respectively.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"50 1","pages":"894 - 899"},"PeriodicalIF":2.1,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49475244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT To control precisely end flare of UHSS thin-walled component, FEA (finite element analysis) model of multi-pass RF (roll forming) process is established. Numerical simulations with developed FEA model considered Young's modulus variation and RF tests are conducted to explain the origin of end flare with residual stresses. It's found that the overlap of bending moment caused by residual longitudinal stress and twisting moment caused by residual shear stress in transversal-longitudinal direction leads to opening deformation in front end and back end for hat channel steel. End flare will decrease with the increase of flange length and increase with the increase of material strength. The effect of forming parameters on end flare is analysed that end flare can be reduced with UDT-type (USTB-Durable T) method, constant-arc-length method and appropriate forming parameters. The findings are applied to control end flare of hat channel steel in actual RF process to meet high-precision requirements.
{"title":"The precise control of end flare with residual stresses of UHSS thin-walled component in roll forming process","authors":"Jiaojiao Cheng, Jianguo Cao, Zhidong Wei, Xuesong Wang, Hao Zhu, R. Zhao","doi":"10.1080/03019233.2023.2212933","DOIUrl":"https://doi.org/10.1080/03019233.2023.2212933","url":null,"abstract":"ABSTRACT To control precisely end flare of UHSS thin-walled component, FEA (finite element analysis) model of multi-pass RF (roll forming) process is established. Numerical simulations with developed FEA model considered Young's modulus variation and RF tests are conducted to explain the origin of end flare with residual stresses. It's found that the overlap of bending moment caused by residual longitudinal stress and twisting moment caused by residual shear stress in transversal-longitudinal direction leads to opening deformation in front end and back end for hat channel steel. End flare will decrease with the increase of flange length and increase with the increase of material strength. The effect of forming parameters on end flare is analysed that end flare can be reduced with UDT-type (USTB-Durable T) method, constant-arc-length method and appropriate forming parameters. The findings are applied to control end flare of hat channel steel in actual RF process to meet high-precision requirements.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"50 1","pages":"1372 - 1384"},"PeriodicalIF":2.1,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49415380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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