Article(id=1187341681708904809, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, articleNumber=1009-5438(2022)02-0078-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1644422400000, receivedDateStr=2022-02-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761013916660, onlineDateStr=2025-10-21, pubDate=1650816000000, pubDateStr=2022-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761013916660, onlineIssueDateStr=2025-10-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761013916660, creator=13701087609, updateTime=1761013916660, updator=13701087609, issue=Issue{id=1187341678487679284, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', issue='2', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='1650816000000', pubDateStr='2022-04-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1761013915892, creator='13701087609', updateTime=1761015806887, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1187349609945907689, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187349609945907690, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=78, endPage=81, ext={EN=ArticleExt(id=1187341681952174444, articleId=1187341681708904809, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Application of Chamfering Crystallizer in Baotou Steel, columnId=1187100786392711543, journalTitle=Science & Technology of Baotou Steel, columnName=Equipment and Automation, runingTitle=null, highlight=null, articleAbstract=
In order to improve the problem of transverse corner crack for peritectic steel, hypo-peritectic steel, medium carbon steel and microalloyed steel containing B, Nb, V and Ti, the chamfering crystallizer successively comes into service of 1# and 2# conticasters. As a result, the defect of transverse corner crack is improved obviously, but due to the changes of cooling mode at corner, such defects of billet as longitudinal corner crack, scab and indentation appear easily as well as they could even cause the accident of longitudinal crack and bleed-out. In the paper, it is mainly analyzed such common defects of chamfering ingot blank as longitudinal crack, scab and indentation so that the slab defects are effectively controlled through such measures as adjusting the taper coefficient of copper plate with narrow edge and cooling intensity of secondary cooling water as well as optimizing the assembly accuracy of equipment and modification of key equipment.
, authors=null, authorsList=Le-le Zhang, Yun-bo Duan, Qiang Li, Dong Wang, Hui Wu, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1187341907488289697, articleId=1187341681708904809, tenantId=1146029695717560320, journalId=1185652524569653253, language=CN, title=倒角结晶器在包钢的应用, columnId=1185882040256840459, journalTitle=包钢科技, columnName=设备与自动化, runingTitle=null, highlight=null, articleAbstract=
为了改善包晶钢、亚包晶钢、中碳钢和含硼、铌、钒、钛微合金化钢的角部横裂问题,在1#、2#连铸机陆续投入使用倒角结晶器,角部横裂缺陷明显改善,但由于角部冷却方式的变化,板坯易出现的角部纵裂纹、结疤和压痕等缺陷,严重时会导致纵裂漏钢事故。文章重点对倒角铸坯常见的纵裂纹、结疤和压痕等缺陷进行分析,通过调整窄侧铜板锥度系数、二冷水冷却强度、优化设备装配精度和关键设备改造等措施,板坯缺陷得到有效控制。
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张乐乐(1987-),男,内蒙古包头市人,助理工程师, 现从事炼钢连铸生产技术和产品质量管理工作。
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张乐乐(1987-),男,内蒙古包头市人,助理工程师, 现从事炼钢连铸生产技术和产品质量管理工作。
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张乐乐(1987-),男,内蒙古包头市人,助理工程师, 现从事炼钢连铸生产技术和产品质量管理工作。
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2013,
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| 名称 | 参数 |
| 连铸机机型 | 直弧形 |
| 弧形半径/m | 10.0 |
| 冶金长度/m | 36.9 |
| 结晶器长度/mm | 900 |
| 流数 | 4 |
| 浇注板坯厚度/mm | 230、250(预留) |
| 浇注板坯宽度/mm | 900~2 150 |
| 定尺长度/m | 8~11 |
| 扇形段数量/个 | 16 |
| 拉速范围/(m·min-1) | 0.8~1.8 |
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板坯连铸机技术参数
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| 名称 | 参数 |
| 连铸机机型 | 直弧形 |
| 弧形半径/m | 10.0 |
| 冶金长度/m | 36.9 |
| 结晶器长度/mm | 900 |
| 流数 | 4 |
| 浇注板坯厚度/mm | 230、250(预留) |
| 浇注板坯宽度/mm | 900~2 150 |
| 定尺长度/m | 8~11 |
| 扇形段数量/个 | 16 |
| 拉速范围/(m·min-1) | 0.8~1.8 |
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| 比例阀类型 | 放大板 | 输入输出信号 | 电缆阻值要求 | 动作相应时间 |
| 电压型 | 外置 | ±10 V | 相对较高 | 慢 |
| 电流型 | 内置 | 4~20 mA | 相对较低 | 快 |
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调宽比例阀对比
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| 比例阀类型 | 放大板 | 输入输出信号 | 电缆阻值要求 | 动作相应时间 |
| 电压型 | 外置 | ±10 V | 相对较高 | 慢 |
| 电流型 | 内置 | 4~20 mA | 相对较低 | 快 |
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| 试验编号 | 窄侧铜板与足辊对弧 | 倒角辊过度圆弧直径 | 内部隔环厚度 | 边部压痕深度 |
| 1 | 0.2~0.3 | 5 | 8.4 | 2.5~3.5 |
| 2 | 0.2~0.3 | 10 | 8.3 | 1.5~2.2 |
| 3 | 0.3~0.5 | 10 | 8.4 | 0.8~1.3 |
| 4 | 0.4~0.5 | 15 | 8.3 | 0.5~1.0 |
| 5 | 0.4~0.5 | 20 | 8.25 | 0~0.5 |
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边部压痕影响因素对比mm
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| 试验编号 | 窄侧铜板与足辊对弧 | 倒角辊过度圆弧直径 | 内部隔环厚度 | 边部压痕深度 |
| 1 | 0.2~0.3 | 5 | 8.4 | 2.5~3.5 |
| 2 | 0.2~0.3 | 10 | 8.3 | 1.5~2.2 |
| 3 | 0.3~0.5 | 10 | 8.4 | 0.8~1.3 |
| 4 | 0.4~0.5 | 15 | 8.3 | 0.5~1.0 |
| 5 | 0.4~0.5 | 20 | 8.25 | 0~0.5 |
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