Article(id=1308544046340076310, tenantId=1146029695717560320, journalId=1268266715432370238, issueId=1308544039763411521, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1006-4613.2026.03.009, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=1749571200000, revisedDateStr=2025-06-11, acceptedDate=null, acceptedDateStr=null, onlineDate=1789910812220, onlineDateStr=2026-09-20, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789910812220, onlineIssueDateStr=2026-09-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789910812220, creator=13701087609, updateTime=1789910812220, updator=13701087609, issue=Issue{id=1308544039763411521, tenantId=1146029695717560320, journalId=1268266715432370238, year='2026', volume='', issue='3', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='1781020800000', pubDateStr='2026-06-10', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789910810650, creator='13701087609', updateTime=1789955260152, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1308730474583916647, tenantId=1146029695717560320, journalId=1268266715432370238, issueId=1308544039763411521, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1308730474583916648, tenantId=1146029695717560320, journalId=1268266715432370238, issueId=1308544039763411521, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=51, endPage=56, ext={EN=ArticleExt(id=1308544047921328920, articleId=1308544046340076310, tenantId=1146029695717560320, journalId=1268266715432370238, language=EN, title=Analysis of Cracking Causes and Improvement Measures for Thick-gauge HSLA Steel Plate Coil after Tube Making, columnId=1268934136686350903, journalTitle=Angang Technology, columnName=Production Practice, runingTitle=null, highlight=null, articleAbstract=

Aiming at the cracking phenomenon of thick-gauge HSLA steel plate coils rolled by Hot Rolled Strip Steel Mill of Angang Steel Co., Ltd. after being used for tube making, composition and process analysis were conducted, and it was determined that the low charpy impact test result was the cause of the cracking. Using optical microscopy analysis, thin film analysis and replication method to test and analyze the cracking specimen, it was found that coarse second-phase precipitates existed in the plate coil, the overall microstructure was uneven, the grains were coarse and the upper and lower surfaces were asymmetrical, and there were coarse carbides (alloyized cementite) distributed in a chain-like or network-like pattern at the ferrite grain boundaries. Under the combined influence of these factors, the plate coil cracked after being subjected to tube making stress. By improving the composition design, optimizing the thermal regime, rolling temperature, cooling temperature, rolling deformation regime and so on, through the mass production of 6 000 tons of thick-gauge Q345B hot-rolled steel coils, the individual impact and average impact energy values exceeded 180 J. As a result, the cracking rate of steel coils during pipe manufacturing decreased from 25% to 0, completely resolving the technical challenge of coil cracking in pipe production.

, authors=Jinchen WANG¹, Xuezhi LI², Yang DONG¹, Xiaodong QU¹, authorsList=Jinchen WANG, Xuezhi LI, Yang DONG, Xiaodong QU, 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=1308544048625971993, articleId=1308544046340076310, tenantId=1146029695717560320, journalId=1268266715432370238, language=CN, title=厚规格高强度低合金钢板卷制管开裂原因分析与改进, columnId=1268934136837345849, journalTitle=鞍钢技术, columnName=生产实践, runingTitle=null, highlight=null, articleAbstract=

针对鞍钢股份有限公司热轧带钢厂厚规格高强度低合金钢板卷在制管后的开裂现象，通过成分、工艺分析，确定夏比冲击低是产生开裂的原因。利用光学显微镜分析、薄膜法分析和复型法对开裂样板进行检测分析，发现板卷中存在粗大的第二相析出，整体微观组织不均匀、晶粒粗大且上下表面不对称，铁素体晶界存在粗大呈链状或网状分布的碳化物（合金渗碳体）。在这些因素的共同影响下，导致板卷在制管受力后产生开裂。通过改进成分设计，优化热制度、轧制温度、冷却温度、轧制变形制度等，批量生产6 000 t厚规格Q345B热轧板卷，冲击功的单值及均值达到了180 J以上，板卷制管后的开裂比例由25%下降到0，彻底解决了板卷制管开裂技术难题。

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王进臣，高级工程师，2004年毕业于东北大学材料成型及控制工程专业。E-mall: agwangjc@163.com

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王进臣，高级工程师，2004年毕业于东北大学材料成型及控制工程专业。E-mall: agwangjc@163.com

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