Formation Mechanism and Main Control Methods of Bright‐Band Defects in Strip Casting Based on Numerical Simulation

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Yuchen Wang, Xiaoming Zhang, Yuanxiang Zhang, Zongwen Ma, Zhenlei Li, Feng Fang, Yang Wang, Guo Yuan
{"title":"Formation Mechanism and Main Control Methods of Bright‐Band Defects in Strip Casting Based on Numerical Simulation","authors":"Yuchen Wang, Xiaoming Zhang, Yuanxiang Zhang, Zongwen Ma, Zhenlei Li, Feng Fang, Yang Wang, Guo Yuan","doi":"10.1002/srin.202400350","DOIUrl":null,"url":null,"abstract":"Bright‐band defects frequently occur on as‐cast strips in the twin‐roll strip‐casting process, particularly at low‐casting speeds, with intervals of ≈200 mm. Additionally, the cast‐rolling force also exhibits minor fluctuations. With increasing casting speeds, the spacing between bright‐band defects widens, and the severity of these defects diminishes. When the casting speed reaches a certain threshold, defects almost entirely disappear. Detailed analysis of the underlying causes of this phenomenon is essential for effectively preventing defect formation. In this study, the numerical simulation method is employed to analyze casting rolls’ thermal deformation and the melt pool's solidification behavior, based on the production site equipment and process conditions. The causes of defects in as‐cast strips are thoroughly analyzed based on simulation results, in conjunction with variations in the cast‐rolling force. In this study, it is demonstrated that the thermal deformation of casting rolls and the position of the solidification endpoints collectively contribute to the fluctuations in cast‐rolling force and are the primary causes of bright‐band defects. Fundamental principles for preventing defects are provided based on actual on‐site production. Furthermore, simulation results contribute to establishing a theoretical basis for selecting process parameters and controlling cast‐rolling force during production.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/srin.202400350","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Bright‐band defects frequently occur on as‐cast strips in the twin‐roll strip‐casting process, particularly at low‐casting speeds, with intervals of ≈200 mm. Additionally, the cast‐rolling force also exhibits minor fluctuations. With increasing casting speeds, the spacing between bright‐band defects widens, and the severity of these defects diminishes. When the casting speed reaches a certain threshold, defects almost entirely disappear. Detailed analysis of the underlying causes of this phenomenon is essential for effectively preventing defect formation. In this study, the numerical simulation method is employed to analyze casting rolls’ thermal deformation and the melt pool's solidification behavior, based on the production site equipment and process conditions. The causes of defects in as‐cast strips are thoroughly analyzed based on simulation results, in conjunction with variations in the cast‐rolling force. In this study, it is demonstrated that the thermal deformation of casting rolls and the position of the solidification endpoints collectively contribute to the fluctuations in cast‐rolling force and are the primary causes of bright‐band defects. Fundamental principles for preventing defects are provided based on actual on‐site production. Furthermore, simulation results contribute to establishing a theoretical basis for selecting process parameters and controlling cast‐rolling force during production.
基于数值模拟的带钢铸造亮带缺陷形成机理及主要控制方法
在双辊带材浇铸工艺中,特别是在低速浇铸时,浇铸后的带材上经常出现光亮带缺陷,间隔≈200 毫米。此外,铸轧力也会出现微小波动。随着浇铸速度的提高,亮带缺陷的间距变宽,缺陷的严重程度降低。当浇铸速度达到一定临界值时,缺陷几乎完全消失。要有效防止缺陷的形成,就必须对这一现象的根本原因进行详细分析。本研究根据生产现场的设备和工艺条件,采用数值模拟方法分析了铸造轧辊的热变形和熔池的凝固行为。根据模拟结果,结合铸轧力的变化,深入分析了铸坯带材缺陷的成因。研究表明,浇铸辊的热变形和凝固端点的位置共同导致了浇铸轧制力的波动,是造成亮带缺陷的主要原因。根据实际现场生产情况,提供了防止缺陷的基本原则。此外,模拟结果有助于为生产过程中选择工艺参数和控制轧制力奠定理论基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信