Article(id=1198550867579339408, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550864987254948, articleNumber=1009-5438(2023)06-0045-06, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1696694400000, receivedDateStr=2023-10-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763686394828, onlineDateStr=2025-11-21, pubDate=1703433600000, pubDateStr=2023-12-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763686394828, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763686394828, creator=13701087609, updateTime=1763686394828, updator=13701087609, issue=Issue{id=1198550864987254948, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='6', 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=1763686394210, creator=13701087609, updateTime=1764231183111, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200835875295843255, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550864987254948, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200835875300037560, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550864987254948, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=45, endPage=50, ext={EN=ArticleExt(id=1198550868036518552, articleId=1198550867579339408, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Industrial Production and Applications of U76CrREH Rail, columnId=1198550865733841063, journalTitle=Science & Technology of Baotou Steel, columnName=Special Issue for Manufacturing Dept. of Inner Mongolia Baotou Steel Union Co., Ltd., runingTitle=null, highlight=null, articleAbstract=
In this paper, it is briefly introduced the research and development and production processes of rare earth rails, summarized researches of rare earth rails in different periods as well as mainly introduced the technical specifications and industrial production of U76CrREH rail in TB/T 2344.1—2020 standard. U76CrREH rail is the rail with independent design, research and development and production of Baotou Steel as well as with the highest strength grade in China’s railways. The rare earth is mainly used to purify molten steel and refine microstructure in order to achieve the effect of improving fatigue life during service of rails. The industrial production requires narrow composition range as well as adopts such control technologies as low H and O to ensure internal metallurgical quality of rail; its tensile strength ≥1 280 MPa, tread hardness (HB)≥370, microstructure is pearlite and surface quality could meet the technical requirements of standard through adopting such technologies as rolling and cooling technologies of online heat treatment. The rail is applied on small radius curves in Urumqi and has been in service for over three months. The accumulated total through-put weight reaches 30 Mt as well as surface condition and wear of the rail are normal with side wear of 0~0.13 mm.
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文章简述了稀土轨研发生产历程,对不同时期稀土轨研究做了简要总结。重点针对TB/T 2344.1—2020标准中U76CrREH钢轨技术规定及工业生产进行了介绍。U76CrREH是包钢自主设计和研发生产、我国铁路最高强度等级的钢轨。主要利用稀土净化钢水和细化显微组织,实现提高钢轨服役疲劳寿命的作用。工业生产从成分进行窄范围要求,采取低H、低O等控制技术,保证了钢轨内部冶金质量;通过采用轧制、在线热处理冷却技术,U76CrREH钢轨抗拉强度不低于1 280 MPa,踏面硬度(HB)不小于370,微观组织为珠光体,表面质量达到标准技术要求。钢轨在某局管内小半径曲线进行应用,服役三个多月,累计通过总重达到30 Mt,钢轨表面状态、磨耗等正常,侧磨为0~0.13 mm。
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彭泽清(1995-),女,山西省朔州市人,硕士,助理工程师,现从事钢轨新产品开发和工艺研究工作。
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1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1198567062604968954, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567062403642352, language=CN, stringName=彭泽清, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
2 内蒙古自治区稀土钢产品研发企业重点实验室,内蒙古 包头 014010, bio={"content":"
彭泽清(1995-),女,山西省朔州市人,硕士,助理工程师,现从事钢轨新产品开发和工艺研究工作。
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彭泽清(1995-),女,山西省朔州市人,硕士,助理工程师,现从事钢轨新产品开发和工艺研究工作。
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1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China
3 Southwest Jiaotong University, Chengdu 610031, Sichuan, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1198567062940512273, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567062714019841, language=CN, stringName=薛虎东, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
2 内蒙古自治区稀土钢产品研发企业重点实验室,内蒙古 包头 014010
3 西南交通大学,四川 成都 610031, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1198567062017766341, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=1, ext=[AuthorCompanyExt(id=1198567062021960646, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062017766341, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)]), AuthorCompany(id=1198567062110041042, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=2, ext=[AuthorCompanyExt(id=1198567062114235346, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 西南交通大学,四川 成都 610031)])]), Author(id=1198567063066341405, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, orderNo=2, 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=1198567063167004708, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567063066341405, language=EN, stringName=Hui-jun Wang, firstName=Hui-jun, middleName=null, lastName=Wang, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1198567063276056623, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567063066341405, language=CN, stringName=王慧军, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
2 内蒙古自治区稀土钢产品研发企业重点实验室,内蒙古 包头 014010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1198567062017766341, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=1, ext=[AuthorCompanyExt(id=1198567062021960646, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062017766341, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)]), AuthorCompany(id=1198567062110041042, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=2, ext=[AuthorCompanyExt(id=1198567062114235346, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062122623955, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 内蒙古自治区稀土钢产品研发企业重点实验室,内蒙古 包头 014010)])]), Author(id=1198567063380914229, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, 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=1198567063506743357, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567063380914229, language=EN, stringName=Mu Ren Zha Bu Da, firstName=Mu Ren Zha Bu, middleName=null, lastName=Da, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4 Rail and Beam Rolling Plant 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=1198567063628378175, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567063380914229, language=CN, stringName=达木仁扎布, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
4, address=
4 内蒙古包钢钢联股份有限公司轨梁轧钢厂,内蒙古 包头 014010, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1198567062315561957, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=4, ext=[AuthorCompanyExt(id=1198567062323950566, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062315561957, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 Rail and Beam Rolling Plant of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062332339175, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062315561957, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 内蒙古包钢钢联股份有限公司轨梁轧钢厂,内蒙古 包头 014010)])]), Author(id=1198567063720652873, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, orderNo=4, 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=1198567064853114958, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567063720652873, language=EN, stringName=Feng-ming Zhang, firstName=Feng-ming, middleName=null, lastName=Zhang, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1198567065008304213, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, authorId=1198567063720652873, language=CN, stringName=张凤明, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010
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1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)]), AuthorCompany(id=1198567062110041042, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=2, ext=[AuthorCompanyExt(id=1198567062114235346, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062122623955, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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东北大学学报,
2002,
23(4):363-366., articleTitle=硫含量重轨钢的组织与性能, refAbstract=null), Reference(id=1198567070188269827, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, doi=null, pmid=null, pmcid=null, year=2008, volume=null, issue=1, pageStart=72, pageEnd=75, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=刘承军, 方磊, 黄桂斌, journalName=稀土, refType=null, unstructuredReference=刘承军, 方磊, 黄桂斌, 等. 高碳稀土钢的微观组织[J].
稀土,
2008(1):72-75., articleTitle=高碳稀土钢的微观组织, refAbstract=null), Reference(id=1198567070284738823, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, doi=null, pmid=null, pmcid=null, year=2007, volume=50, issue=4, pageStart=6, pageEnd=null, url=null, language=null, rfNumber=[3], rfOrder=2, authorNames=舒遗一, 李碧春, 李斌, journalName=重钢技术, refType=null, unstructuredReference=舒遗一, 李碧春, 李斌. 国内外重轨钢生产技术调研[J].
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50(4):6., articleTitle=国内外重轨钢生产技术调研, refAbstract=null), Reference(id=1198567070368624904, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[4], rfOrder=3, authorNames=null, journalName=TB/T 2344.1—2020,钢轨第一部分:43 kg/m-75 kg/m钢轨, refType=null, unstructuredReference=
TB/T 2344.1—2020,钢轨第一部分:43 kg/m-75 kg/m钢轨[S]., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1198567062017766341, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=1, ext=[AuthorCompanyExt(id=1198567062021960646, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062017766341, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062030349255, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062017766341, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 内蒙古包钢钢联股份有限公司技术中心,内蒙古 包头 014010)]), AuthorCompany(id=1198567062110041042, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, xref=2, ext=[AuthorCompanyExt(id=1198567062114235346, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Enterprise Key Laboratory of Rare Earth Steel Products Research & Development, Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062122623955, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062110041042, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4 Rail and Beam Rolling Plant of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1198567062332339175, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, companyId=1198567062315561957, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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60 kg/m U76CrREH在线热处理钢轨典型非金属夹杂物形貌, figureFileSmall=uYAIK5WHe8ebFe2S+FtsWg==, figureFileBig=Y87/OCb+kBEUt594IigKmg==, tableContent=null), ArticleFig(id=1198567067013181623, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, language=EN, label=null, caption=null, figureFileSmall=SL0j0m4Tt7PO4Mf7bCqUnA==, figureFileBig=RbLVWvYfXTn+0mvY9+WGYg==, tableContent=null), ArticleFig(id=1198567067159982268, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, language=CN, label=图5, caption=
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U76CrREH曲线缓圆点廓形测量, figureFileSmall=smPoUDpRYBeTIgthQlpuuQ==, figureFileBig=gSB/kwgyCLYkLIbPlgHfaA==, tableContent=null), ArticleFig(id=1198567067516498121, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 等级 | 抗拉强度Rm /MPa | 断后伸长率A /% | 轨头顶面中心线硬度 (HBW10/3000) | 轨头横断面硬化层硬度(HRC) |
| A1、B1、C1、D1、E1 | A4、B5、C5、D3、E3 |
| H370 | ≥1 280 | ≥10 | 370~420 | 37.0~44.0 | ≥36.0 |
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U76CrREH在线热处理钢轨组织和性能标准要求
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| 等级 | 抗拉强度Rm /MPa | 断后伸长率A /% | 轨头顶面中心线硬度 (HBW10/3000) | 轨头横断面硬化层硬度(HRC) |
| A1、B1、C1、D1、E1 | A4、B5、C5、D3、E3 |
| H370 | ≥1 280 | ≥10 | 370~420 | 37.0~44.0 | ≥36.0 |
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| C | Si | Mn | P | S | Cr | V |
| 0.71~0.81 | 0.50~0.80 | 0.80~1.10 | ≤0.025 | ≤0.25 | 0.25~0.35 | 0.04~0.08 |
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U76CrREH钢轨成分设计(质量分数)%
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| C | Si | Mn | P | S | Cr | V |
| 0.71~0.81 | 0.50~0.80 | 0.80~1.10 | ≤0.025 | ≤0.25 | 0.25~0.35 | 0.04~0.08 |
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| 编号 | 抗拉强度 /MPa | 延伸率 /% | 踏面硬度 (HBW) |
| 1# | 1 342 1 346 | 12.5 13.5 | 386 |
| 2# | 1 349 1 347 | 12.5 13.0 | 391 |
| 3# | 1 336 1 334 | 14.0 13.0 | 393 |
| 4# | 1 332 1 330 | 12.5 14.0 | 381 |
| 标准 | ≥1 280 | ≥10 | 370~420 |
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U76CrREH在线热处理钢轨力学性能及标准要求
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| 编号 | 抗拉强度 /MPa | 延伸率 /% | 踏面硬度 (HBW) |
| 1# | 1 342 1 346 | 12.5 13.5 | 386 |
| 2# | 1 349 1 347 | 12.5 13.0 | 391 |
| 3# | 1 336 1 334 | 14.0 13.0 | 393 |
| 4# | 1 332 1 330 | 12.5 14.0 | 381 |
| 标准 | ≥1 280 | ≥10 | 370~420 |
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| 编号 | 断面硬度(HRC) | 脱碳层 厚度/mm |
| A1 | A4 | B1 | B5 | C1 | C5 | D1 | D3 | E1 | E3 |
| 1# | 39.95 | 37.59 | 39.40 | 38.49 | 39.67 | 38.15 | 39.52 | 39.12 | 39.49 | 39.26 | 0.11 |
| 2# | 39.40 | 37.60 | 39.50 | 38.40 | 39.00 | 38.30 | 39.10 | 38.60 | 39.30 | 38.90 | 0.18 |
| 3# | 39.90 | 38.41 | 39.81 | 37.63 | 39.25 | 38.38 | 39.39 | 38.24 | 39.77 | 38.45 | 0.16 |
| 4# | 39.46 | 38.25 | 39.53 | 38.88 | 39.79 | 37.80 | 39.71 | 37.37 | 39.48 | 37.71 | 0.19 |
| 标准 | A1、B1、C1、D1、E1:37~44;A4、B5、C5、D3、E3:≥36 | ≤0.5 |
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U76CrREH 60N热处理轨断面硬度、脱碳层检验结果及标准要求
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| 编号 | 断面硬度(HRC) | 脱碳层 厚度/mm |
| A1 | A4 | B1 | B5 | C1 | C5 | D1 | D3 | E1 | E3 |
| 1# | 39.95 | 37.59 | 39.40 | 38.49 | 39.67 | 38.15 | 39.52 | 39.12 | 39.49 | 39.26 | 0.11 |
| 2# | 39.40 | 37.60 | 39.50 | 38.40 | 39.00 | 38.30 | 39.10 | 38.60 | 39.30 | 38.90 | 0.18 |
| 3# | 39.90 | 38.41 | 39.81 | 37.63 | 39.25 | 38.38 | 39.39 | 38.24 | 39.77 | 38.45 | 0.16 |
| 4# | 39.46 | 38.25 | 39.53 | 38.88 | 39.79 | 37.80 | 39.71 | 37.37 | 39.48 | 37.71 | 0.19 |
| 标准 | A1、B1、C1、D1、E1:37~44;A4、B5、C5、D3、E3:≥36 | ≤0.5 |
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| 编号 | A类 | | B类 | | C类 | | D类 | DS类 |
| 粗 | 细 | 粗 | 细 | 粗 | 细 | 粗 | 细 |
| 1# | 0.5 | 0.5 | | 0.5 | 0.5 | | 0.5 | 1 | | 0.5 | 0.5 | 0.5 |
| 2# | 1 | 1 | | 1 | 1 | | 0.5 | 1 | | 1 | 1 | 0.5 |
| 3# | 1 | 1.5 | | 0.5 | 1 | | 1 | 1 | | 0.5 | 1 | 0.5 |
| 4# | 1 | 1 | | 1 | 0.5 | | 1 | 0.5 | | 1 | 1 | 1 |
| 标准 | ≤2.5 | ≤2.5 | | ≤1.5 | ≤1.5 | | ≤1.5 | ≤1.5 | | ≤1.5 | ≤1.5 | ≤2.5 |
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60kg/m U76CrREH在线热处理钢轨非金属夹杂物级
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| 编号 | A类 | | B类 | | C类 | | D类 | DS类 |
| 粗 | 细 | 粗 | 细 | 粗 | 细 | 粗 | 细 |
| 1# | 0.5 | 0.5 | | 0.5 | 0.5 | | 0.5 | 1 | | 0.5 | 0.5 | 0.5 |
| 2# | 1 | 1 | | 1 | 1 | | 0.5 | 1 | | 1 | 1 | 0.5 |
| 3# | 1 | 1.5 | | 0.5 | 1 | | 1 | 1 | | 0.5 | 1 | 0.5 |
| 4# | 1 | 1 | | 1 | 0.5 | | 1 | 0.5 | | 1 | 1 | 1 |
| 标准 | ≤2.5 | ≤2.5 | | ≤1.5 | ≤1.5 | | ≤1.5 | ≤1.5 | | ≤1.5 | ≤1.5 | ≤2.5 |
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| 位置 | 垂直磨耗 | | 侧面磨耗 | | 总磨耗 | | 光亮带宽度(参考值) |
| 内轨 | 外轨 | 内轨 | 外轨 | 内轨 | 外轨 | 内轨 | 外轨 |
| 直缓点 | 0.89 | 0.85 | | 0 | 0.08 | | 0.890 | 0.890 | | 46 | 44 |
| 缓圆点 | 1.17 | 1.49 | | 0.05 | 0.07 | | 1.195 | 1.525 | | 50 | 47 |
| 曲中点 | 0.97 | 1.00 | | 0 | 0.04 | | 0.970 | 1.020 | | 46 | 49 |
| 圆缓点 | 0.89 | 1.12 | | 0.01 | 0 | | 0.895 | 1.120 | | 45 | 49 |
| 缓直点 | 0.80 | 0.93 | | 0.06 | 0.05 | | 0.830 | 0.955 | | 42 | 46 |
| 最大值 | 1.17 | 1.49 | | 0.06 | 0.08 | | 1.195 | 1.525 | | 50 | 49 |
| 平均值 | 0.944 | 1.078 | | 0.024 | 0.048 | | 0.956 | 1.102 | | | |
), ArticleFig(id=1198567069840142587, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550867579339408, language=CN, label=表6, caption=
各点钢轨磨耗量和光亮带宽度mm
, figureFileSmall=null, figureFileBig=null, tableContent=
| 位置 | 垂直磨耗 | | 侧面磨耗 | | 总磨耗 | | 光亮带宽度(参考值) |
| 内轨 | 外轨 | 内轨 | 外轨 | 内轨 | 外轨 | 内轨 | 外轨 |
| 直缓点 | 0.89 | 0.85 | | 0 | 0.08 | | 0.890 | 0.890 | | 46 | 44 |
| 缓圆点 | 1.17 | 1.49 | | 0.05 | 0.07 | | 1.195 | 1.525 | | 50 | 47 |
| 曲中点 | 0.97 | 1.00 | | 0 | 0.04 | | 0.970 | 1.020 | | 46 | 49 |
| 圆缓点 | 0.89 | 1.12 | | 0.01 | 0 | | 0.895 | 1.120 | | 45 | 49 |
| 缓直点 | 0.80 | 0.93 | | 0.06 | 0.05 | | 0.830 | 0.955 | | 42 | 46 |
| 最大值 | 1.17 | 1.49 | | 0.06 | 0.08 | | 1.195 | 1.525 | | 50 | 49 |
| 平均值 | 0.944 | 1.078 | | 0.024 | 0.048 | | 0.956 | 1.102 | | | |
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