Article(id=1185887584279479155, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1185882038939825058, articleNumber=1009-5438(2025)03-0054-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1736956800000, receivedDateStr=2025-01-16, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1760667232818, onlineDateStr=2025-10-17, pubDate=1750780800000, pubDateStr=2025-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1760667232818, onlineIssueDateStr=2025-10-17, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1760667232818, creator=13701087609, updateTime=1760667232818, updator=13701087609, issue=Issue{id=1185882038939825058, tenantId=1146029695717560320, journalId=1185652524569653253, year='2025', volume='51', 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=0, createTime=1760665910706, creator=13701087609, updateTime=1764316917348, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1201195470770102709, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1185882038939825058, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1201195470770102710, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1185882038939825058, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=54, endPage=58, ext={EN=ArticleExt(id=1187122784749634013, articleId=1185887584279479155, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Industrial Trial Production of Corrosion-resistant Rail, columnId=1187095652984042303, journalTitle=Science & Technology of Baotou Steel, columnName=Variety Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=
The industrial trial production of corrosion-resistant rail is successfully realized through strictly implementing its process system of smelting, continuous casting, heating and rolling. The comprehensive detection for microstructure, mechanical performances and corrosion resistance of trial-produced rail is carried out. The results showed that the tensile strength of rail could reach over 1 050 MPa, top surface hardness of rail head (HBW) was over 300, cross section of rail was uniform perlite and trace amount of ferritic structure as well as lamellar spacing of pearlite was reduced by 21% compared with that of traditional hot rolled U75V rail. Compared with U75V rail, the corrosion resistance of trial-produced rail for simulating coastal atmospheric environment is improved by 45.3% and corrosion resistance of simulating acid rain is improved by 54.9%, which could reach the design indexes.
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通过严格执行耐腐蚀钢轨的冶炼、连铸、加热及轧制工艺制度,成功实现耐腐蚀钢轨的工业试制。对试制钢轨的显微组织、力学性能和耐腐蚀特性进行综合检测,结果表明:钢轨抗拉强度达1 050 MPa以上,轨头顶面硬度(HBW)超过300,钢轨断面为均匀珠光体加微量铁素体组织,珠光体片层间距较传统热轧U75V钢轨缩小21%。试制钢轨模拟沿海大气环境的耐腐蚀性能相比U75V钢轨提高45.3%,模拟酸雨环境的耐腐蚀性能相比U75V钢轨提高54.9%,达到了设计指标。
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郑 瑞(1985-),男,内蒙古包头市人,硕士,高级工程师,现从事钢轨产品研发及质量攻关工作。
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郑 瑞(1985-),男,内蒙古包头市人,硕士,高级工程师,现从事钢轨产品研发及质量攻关工作。
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郑 瑞(1985-),男,内蒙古包头市人,硕士,高级工程师,现从事钢轨产品研发及质量攻关工作。
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| 伤损类型 | 高速铁路无砟道线路 | | 铁路线路(重载部分) |
| 轻伤 | 重伤 | 轻伤 | 重伤 |
| 钢轨锈蚀 | - | 经除锈后,轨底厚度不足8 mm或轨腰厚度不足12 mm | | 经除锈后,轨底厚度不足8 mm或轨腰厚度不足14 mm | 经除锈后,轨底厚度不足5 mm或轨腰厚度不足8 mm |
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60 kg/m钢轨维修规则[3]
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| 伤损类型 | 高速铁路无砟道线路 | | 铁路线路(重载部分) |
| 轻伤 | 重伤 | 轻伤 | 重伤 |
| 钢轨锈蚀 | - | 经除锈后,轨底厚度不足8 mm或轨腰厚度不足12 mm | | 经除锈后,轨底厚度不足8 mm或轨腰厚度不足14 mm | 经除锈后,轨底厚度不足5 mm或轨腰厚度不足8 mm |
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| 检测项目 | 标准要求 /mm | 实测范围 /mm | 合格率 /% |
| 轨高 | 176±0.5 | 175.8~176.2 | 100 |
| 轨底宽度 | 150±0.8 | 149.5~150.3 | 100 |
| 轨腰厚度 | 16.5±0.5 | 16.4~16.6 | 100 |
| 轨头对称度 | ≤0.3 | 0.1~0.2 | 100 |
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60 kg/m钢轨几何尺寸检测结果
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| 检测项目 | 标准要求 /mm | 实测范围 /mm | 合格率 /% |
| 轨高 | 176±0.5 | 175.8~176.2 | 100 |
| 轨底宽度 | 150±0.8 | 149.5~150.3 | 100 |
| 轨腰厚度 | 16.5±0.5 | 16.4~16.6 | 100 |
| 轨头对称度 | ≤0.3 | 0.1~0.2 | 100 |
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| 试样编号 | Rp0.2 /MPa | Rm /MPa | A /% | Z /% |
| A | 691 | 1 076 | 13.0 | 42 |
| B | 743 | 1 095 | 12.5 | 38 |
| C | 689 | 1 103 | 13.5 | 32 |
| D | 731 | 1 121 | 12.5 | 32 |
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拉伸性能检验结果
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| 试样编号 | Rp0.2 /MPa | Rm /MPa | A /% | Z /% |
| A | 691 | 1 076 | 13.0 | 42 |
| B | 743 | 1 095 | 12.5 | 38 |
| C | 689 | 1 103 | 13.5 | 32 |
| D | 731 | 1 121 | 12.5 | 32 |
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| 试样编号 | 1 | 2 | 3 | 4 | 5 | 平均值 |
| A | 309 | 309 | 309 | 310 | 310 | 309 |
| B | 310 | 310 | 310 | 311 | 311 | 310 |
| C | 308 | 306 | 308 | 308 | 306 | 307 |
| D | 309 | 309 | 310 | 312 | 309 | 310 |
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轨头顶面硬度(HBW)检验结果
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| 试样编号 | 1 | 2 | 3 | 4 | 5 | 平均值 |
| A | 309 | 309 | 309 | 310 | 310 | 309 |
| B | 310 | 310 | 310 | 311 | 311 | 310 |
| C | 308 | 306 | 308 | 308 | 306 | 307 |
| D | 309 | 309 | 310 | 312 | 309 | 310 |
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试样 编号 | A类 | | B类 | | C类 | | D类 | DS类 |
| 细系 | 粗系 | 细系 | 粗系 | 细系 | 粗系 | 细系 | 粗系 |
| A | 1.5 | 1.5 | | 1 | 1 | | 1 | 1 | | 0.5 | 0.5 | 1.0 |
| D | 1.5 | 1 | | 1 | 1 | | 0.5 | 0.5 | | 0.5 | 0.5 | 0.5 |
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非金属夹杂物检验结果
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试样 编号 | A类 | | B类 | | C类 | | D类 | DS类 |
| 细系 | 粗系 | 细系 | 粗系 | 细系 | 粗系 | 细系 | 粗系 |
| A | 1.5 | 1.5 | | 1 | 1 | | 1 | 1 | | 0.5 | 0.5 | 1.0 |
| D | 1.5 | 1 | | 1 | 1 | | 0.5 | 0.5 | | 0.5 | 0.5 | 0.5 |
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| 钢种 | 1 | 2 | 3 | 4 | 5 | 平均值 |
| U75V | 0.335 | 0.242 | 0.256 | 0.277 | 0.268 | 0.256 |
| 0.249 | 0.239 | 0.181 | 0.25 | 0.336 |
| 0.311 | 0.234 | 0.245 | 0.263 | 0.215 |
| 0.205 | 0.252 | 0.162 | 0.147 | 0.335 |
| 0.356 | 0.249 | 0.215 | 0.271 | 0.295 |
| 耐腐蚀钢轨 | 0.232 | 0.267 | 0.264 | 0.165 | 0.172 | 0.211 |
| 0.245 | 0.354 | 0.181 | 0.331 | 0.228 |
| 0.163 | 0.132 | 0.145 | 0.256 | 0.138 |
| 0.216 | 0.168 | 0.162 | 0.327 | 0.134 |
| 0.167 | 0.251 | 0.116 | 0.176 | 0.286 |
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钢轨珠光体片层间距 μm
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| 钢种 | 1 | 2 | 3 | 4 | 5 | 平均值 |
| U75V | 0.335 | 0.242 | 0.256 | 0.277 | 0.268 | 0.256 |
| 0.249 | 0.239 | 0.181 | 0.25 | 0.336 |
| 0.311 | 0.234 | 0.245 | 0.263 | 0.215 |
| 0.205 | 0.252 | 0.162 | 0.147 | 0.335 |
| 0.356 | 0.249 | 0.215 | 0.271 | 0.295 |
| 耐腐蚀钢轨 | 0.232 | 0.267 | 0.264 | 0.165 | 0.172 | 0.211 |
| 0.245 | 0.354 | 0.181 | 0.331 | 0.228 |
| 0.163 | 0.132 | 0.145 | 0.256 | 0.138 |
| 0.216 | 0.168 | 0.162 | 0.327 | 0.134 |
| 0.167 | 0.251 | 0.116 | 0.176 | 0.286 |
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| 腐蚀介质 | 钢种 | 平均失重率/(g·m-2·h-1) | | 相对腐蚀率/% |
| 72 h | 120 h | 168 h | 72 h | 120 h | 168 h |
| 3.5% NaCl | U75V | 4.79 | 3.42 | 2.85 | | 149 | 145 | 142 |
| 耐腐蚀钢轨 | 3.21 | 2.36 | 2.01 |
| H2SO4+HNO3(pH=4) | U75V | 5.62 | 4.15 | 3.40 | | 151 | 158 | 156 |
| 耐腐蚀钢轨 | 3.72 | 2.63 | 2.18 |
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加速腐蚀试验结果
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| 腐蚀介质 | 钢种 | 平均失重率/(g·m-2·h-1) | | 相对腐蚀率/% |
| 72 h | 120 h | 168 h | 72 h | 120 h | 168 h |
| 3.5% NaCl | U75V | 4.79 | 3.42 | 2.85 | | 149 | 145 | 142 |
| 耐腐蚀钢轨 | 3.21 | 2.36 | 2.01 |
| H2SO4+HNO3(pH=4) | U75V | 5.62 | 4.15 | 3.40 | | 151 | 158 | 156 |
| 耐腐蚀钢轨 | 3.72 | 2.63 | 2.18 |
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