Article(id=1187029893876432908, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187029888956510427, articleNumber=1009-5438(2024)05-0061-06, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1717171200000, receivedDateStr=2024-06-01, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1760939580648, onlineDateStr=2025-10-20, pubDate=1729785600000, pubDateStr=2024-10-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1760939580648, onlineIssueDateStr=2025-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1760939580648, creator=13701087609, updateTime=1760939580648, updator=13701087609, issue=Issue{id=1187029888956510427, tenantId=1146029695717560320, journalId=1185652524569653253, year='2024', volume='50', issue='5', 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=1760939579476, creator=13701087609, updateTime=1760941227119, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1187036799714083448, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187029888956510427, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187036799714083449, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187029888956510427, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=61, endPage=66, ext={EN=ArticleExt(id=1187104195778851040, articleId=1187029893876432908, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Control Study on Dispersion of Inclusions in Heavy Rail Steel with Magnesium, columnId=null, journalTitle=Science & Technology of Baotou Steel, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Baotou Steel is one of the main production bases of heavy rail steel in China and large size nonmetallic inclusions are the bottleneck restricting improvement of quality of heavy rail steel. In this paper, the control technology for superfine dispersion of inclusions in heavy rail steel with magnesium is developed based on the physicochemical and metallurgical properties of magnesium. The comparative analysis between industrial tests of magnesium modification and traditional process showed that the inclusions in heavy rail steel such as MnS and CaO-Al2O3-SiO2 were transformed into small size composite inclusions of MgO·Al2O3 and MnS, density of inclusions on vertical and horizontal observation planes and intermediate vertical observation plane of the rail were increased from 17 mm-2, 21 mm-2 and 18 mm-2 to 22 mm-2, 29 mm-2 and 25 mm-2 respectively, while equivalent diameters were decreased from 2.7 μm, 2.6 μm and 2.4 μm to 2.3 μm, 2.4 μm and 2.3 μm respectively as well as proportion of area of inclusions were decreased from 0.017%, 0.016% and 0.014% to 0.013%, 0.014% and 0.012% respectively after magnesium modification. Moreover, the nonmetallic inclusions in steel are rated as Grade A (0.5, 0.5), Grade B (0.5, 0.5), Grade C (1.0, 0.5), Grade D (0.5, 0.5) and Grade Ds (0) according to Method A as well as rated as 2.78 according to Method K. The inclusions of heavy rail steel after magnesium modification could meet the standard requirements.
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包钢是我国主要的重轨钢生产基地之一,大尺寸的非金属夹杂物是制约重轨钢质量提高的瓶颈。文章基于镁的理化及冶金性能,开发镁对重轨钢夹杂物微细弥散化控制技术。镁改质工业试验与传统工艺对比分析显示,镁改质后,重轨钢中的MnS、CaO-Al2O3-SiO2夹杂物转变为小尺寸的MgO·Al2O3与MnS的复合夹杂物,钢轨垂直观察面、水平观察面、中间垂直观察面的夹杂物密度分别由17 mm-2、21 mm-2、18 mm-2增加到22 mm-2、29 mm-2、25 mm-2,等效直径分别由2.7 μm、2.6 μm、2.4 μm减小到2.3 μm、2.4 μm、2.3 μm,夹杂物面积占比分别由0.017%、0.016%、0.014%减小到0.013%、0.014%、0.012%。镁改质后钢中非金属夹杂物按A法评级为A类(0.5,0.5)、B类(0.5,0.5)、C类(1.0,0.5)、D类(0.5,0.5)、Ds类(0),按K法评级为2.78。镁改质后重轨钢夹杂物满足标准要求。
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宋光洁(2000-),男,河南省新乡市人,硕士,现从事钢铁冶金方面的研究工作。
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1, address=1. Center for Advanced Solidification Technology, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1187104339110801882, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, authorId=1187104338984972756, language=CN, stringName=宋光洁, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=1.上海大学材料科学与工程学院先进凝固技术中心 省部共建高品质特殊钢冶金与制备国家重点实验室,上海 200444, bio={"content":"
宋光洁(2000-),男,河南省新乡市人,硕士,现从事钢铁冶金方面的研究工作。
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宋光洁(2000-),男,河南省新乡市人,硕士,现从事钢铁冶金方面的研究工作。
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2, address=2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1187104342273307117, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, authorId=1187104342126506470, language=CN, stringName=张达先, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
2, address=2.内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1187104338896892367, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, xref=null, ext=[AuthorCompanyExt(id=1187104338905280976, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, companyId=1187104338896892367, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187104338913669585, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, companyId=1187104338896892367, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)])]), Author(id=1187104342327833072, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1187104342394941941, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, authorId=1187104342327833072, language=EN, stringName=Zhang Feng-ming, firstName=Zhang, middleName=null, lastName=Feng-ming, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2, address=2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1187104342868898312, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, authorId=1187104342734680578, language=CN, stringName=何建中, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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42(5):164-169., articleTitle=含镁非调质钢中尖晶石转变机制研究, refAbstract=null)], funds=[Fund(id=1187104344668254776, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, awardId=2022ZY0124, language=CN, fundingSource=中央引导地方科技发展资金(2022ZY0124), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1187104338829783498, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, xref=null, ext=[AuthorCompanyExt(id=1187104338838172107, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, companyId=1187104338829783498, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1. Center for Advanced Solidification Technology, State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China), AuthorCompanyExt(id=1187104338846560716, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, companyId=1187104338829783498, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=1.上海大学材料科学与工程学院先进凝固技术中心 省部共建高品质特殊钢冶金与制备国家重点实验室,上海 200444)]), AuthorCompany(id=1187104338896892367, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, xref=null, ext=[AuthorCompanyExt(id=1187104338905280976, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, companyId=1187104338896892367, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2. Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187104338913669585, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, companyId=1187104338896892367, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=2.内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)])], figs=[ArticleFig(id=1187104343586124317, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, language=EN, label=null, caption=null, figureFileSmall=YiApysSlhRVJf7o/SYpo+A==, figureFileBig=lom6svZ7QPS6OUNIbQbesg==, tableContent=null), ArticleFig(id=1187104343699370527, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, language=CN, label=图1, caption=
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镁改质前后重轨钢中典型夹杂物三维形貌和成分 (a)~(d)原样;(e)~(h)镁改质
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镁改质前后重轨钢中大尺寸夹杂物分布, figureFileSmall=GUYY0VXlMldoWxHX3dLjJw==, figureFileBig=IORlQE0MzSQqoaHV5PsyPg==, tableContent=null), ArticleFig(id=1187104344181715499, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, language=EN, label=null, caption=null, figureFileSmall=6zJJ/COmJRwuHtJel77SAg==, figureFileBig=OlXBevu/QqRliFunCQP0kw==, tableContent=null), ArticleFig(id=1187104344253018669, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, language=CN, label=图5, caption=
镁改质前后重轨钢中硫化物长宽比分布, figureFileSmall=6zJJ/COmJRwuHtJel77SAg==, figureFileBig=OlXBevu/QqRliFunCQP0kw==, tableContent=null), ArticleFig(id=1187104344353681967, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187029893876432908, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 试样 | C | Si | Mn | P | S | V | Al | Mg |
| 原样 | 0.73 | 0.35 | 0.95 | 0.012 | 0.002 | 0.004 | 0.003 4 | |
| 镁改质 | 0.75 | 0.35 | 0.95 | 0.015 | 0.002 | 0.054 | 0.003 5 | 0.001 8 |
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重轨钢的化学成分(质量分数) %
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| 试样 | C | Si | Mn | P | S | V | Al | Mg |
| 原样 | 0.73 | 0.35 | 0.95 | 0.012 | 0.002 | 0.004 | 0.003 4 | |
| 镁改质 | 0.75 | 0.35 | 0.95 | 0.015 | 0.002 | 0.054 | 0.003 5 | 0.001 8 |
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| 试样 | K法 | A法 |
| A粗 | A细 | B粗 | B细 | C粗 | C细 | D粗 | D细 | Ds |
| 原样 | 8.01 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 0.5 | 1 | 1 | 0.5 |
| 镁改质 | 2.78 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 0.5 | 0.5 | 0.5 | 0 |
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镁改质前后重轨钢夹杂物评级
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| 试样 | K法 | A法 |
| A粗 | A细 | B粗 | B细 | C粗 | C细 | D粗 | D细 | Ds |
| 原样 | 8.01 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 0.5 | 1 | 1 | 0.5 |
| 镁改质 | 2.78 | 0.5 | 0.5 | 0.5 | 0.5 | 1 | 0.5 | 0.5 | 0.5 | 0 |
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