Article(id=1198277727888437696, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198277724201644449, articleNumber=1009-5438(2023)03-0067-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1680278400000, receivedDateStr=2023-04-01, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763621273251, onlineDateStr=2025-11-20, pubDate=1687622400000, pubDateStr=2023-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763621273251, onlineIssueDateStr=2025-11-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763621273251, creator=13701087609, updateTime=1763621273251, updator=13701087609, issue=Issue{id=1198277724201644449, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='3', pageStart='1', pageEnd='98', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763621272373, creator=13701087609, updateTime=1763621583776, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1198279030370829084, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198277724201644449, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1198279030370829085, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198277724201644449, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=67, endPage=71, ext={EN=ArticleExt(id=1198277728148484550, articleId=1198277727888437696, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Current Status of Domestic Production Technology for Heavy Rail, columnId=1198265195702354688, journalTitle=Science & Technology of Baotou Steel, columnName=Varieties and Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=
In this article, the current status of processes and equipment for smelting and rolling heavy rail steel in domestic manufacturing enterprises of heavy rail is mainly introduced. The advantages and disadvantages of different steel-making processes are analyzed through comparing the technical indicators achieved by different control modes of different smelting processes, pretreatment of hot metal, smelting with oxygen top-blown converter, refining with ladle furnace (LF), vacuum degassing and continuous bloom casting; the effects of different processes on product quality and the product range that can be rolled are analyzed through comparing the process characteristics of different layout forms of rolling modes such as continuous rolling modes of universal three stands, universal three stands 2+1, universal five stands 2+2+1 and universal four stands 3+1 so that the advantages and disadvantages of different rolling processes are elaborated. In addition, the straightening machine and detection equipment of heavy rail are briefly introduced.
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文章主要介绍了目前国内重轨生产企业在重轨钢冶炼及轧制方面的工艺、设备现状。通过对比不同冶炼工序、铁水预处理、氧气顶吹转炉冶炼、LF炉精炼、真空脱气、大方坯连铸等的不同控制方式所能达到的技术指标,分析了不同炼钢工艺的优缺点;通过对比万能三机架连轧模式、万能三机架2+1连轧模式、万能五机架2+2+1连轧模式以及万能四机架3+1模式的不同轧制方式布置形式的工艺特点,分析了不同工艺对产品质量的影响及所能轧制的产品范围,从而阐述了不同轧制工艺的优缺点。此外,对重轨矫直机和检测设备也作了简要介绍。
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郭利宏(1978-),男,内蒙古丰镇市人,高级工程师,主要从事大型材工艺、新产品开发工作。
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郭利宏(1978-),男,内蒙古丰镇市人,高级工程师,主要从事大型材工艺、新产品开发工作。
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| 冶炼流程 | 主要目标 | 相关技术 | 目标要求 |
| 铁水预处理 | 脱硫 | 镁脱硫技术、KR搅拌法 | ω(S)≤0.009% |
| 转炉冶炼 | 脱磷、脱碳 | 双渣法冶炼等 | ω(P)≤0.015% |
| LF炉精炼 | 调整并均匀钢水成分和温度 | 造渣、吹氩搅拌,合金化等 | 钢水成分均匀 |
| 真空脱气 | 脱氢、脱氧、脱氮、调碳等 | RH炉、VD炉 | ω(H)≤1.5×10-6,ω(O)≤20×10-6 |
| 大方坯连铸 | 形成连铸坯 | 恒拉速稳定浇注、结晶器电磁搅拌等 | 成分稳定,组织均匀,表面无缺陷 |
), ArticleFig(id=1198292506749268233, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198277727888437696, language=CN, label=表1, caption=
重轨钢冶炼技术、流程及要求
, figureFileSmall=null, figureFileBig=null, tableContent=
| 冶炼流程 | 主要目标 | 相关技术 | 目标要求 |
| 铁水预处理 | 脱硫 | 镁脱硫技术、KR搅拌法 | ω(S)≤0.009% |
| 转炉冶炼 | 脱磷、脱碳 | 双渣法冶炼等 | ω(P)≤0.015% |
| LF炉精炼 | 调整并均匀钢水成分和温度 | 造渣、吹氩搅拌,合金化等 | 钢水成分均匀 |
| 真空脱气 | 脱氢、脱氧、脱氮、调碳等 | RH炉、VD炉 | ω(H)≤1.5×10-6,ω(O)≤20×10-6 |
| 大方坯连铸 | 形成连铸坯 | 恒拉速稳定浇注、结晶器电磁搅拌等 | 成分稳定,组织均匀,表面无缺陷 |
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