Article(id=1202250855731916904, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202250853794148439, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20220187, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1764568540747, onlineDateStr=2025-12-01, pubDate=1674144000000, pubDateStr=2023-01-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1764568540747, onlineIssueDateStr=2025-12-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1764568540747, creator=13701087609, updateTime=1764568540747, updator=13701087609, issue=Issue{id=1202250853794148439, tenantId=1146029695717560320, journalId=1189873562199433220, year='2023', volume='', issue='1', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1764568540285, creator=13701087609, updateTime=1764576081444, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1202282483787194627, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202250853794148439, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1202282483787194628, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1202250853794148439, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=8, endPage=14, ext={EN=ArticleExt(id=1202250856902127748, articleId=1202250855731916904, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Causes and Countermeasures of 700L Punching Delamination of Hot-Rolled Steel Plate for Frame Side Rail, columnId=null, journalTitle=Automobile Technology & Material, columnName=null, runingTitle=null, highlight=null, articleAbstract=
This paper described the phenomenon of punching delamination of hot-rolled steel plate 700L for frame side rails and its harm. Through macro and micro observation, combined with the blanking process principle, the factors of material, process and mechanism that lead to delamination in punching were analyzed. It is believed that severe plastic deformation during punching leads to serious fibrosis of the structure, and the fibrous structure delaminates or breaks under the action of shear stress and normal stress, forming a competitive mechanism with the generation and expansion of main cracks in the tear band. If the delamination and fracture of the fiber occur later than the crack of the tear band, the delamination or serrated fracture on the surface of the punched hole can be prevented. Using Theory of Inventive Problem Solving(TRIZ) theory, the prestressed punching process is designed and developed, which not only ensures the integrity of the punched hole surface, but also ensures the punch life.
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描述了热轧大梁板700L冲孔分层现象及其危害,通过宏观和微观观察、结合冲裁工艺原理,分析了冲孔分层的材料、工艺因素和机制,认为冲孔过程中剧烈的塑性变形导致组织的严重纤维化,纤维组织在剪切应力、正应力作用下的分层或断裂,与撕裂带主裂纹的产生和扩展形成了竞争机制,如果纤维分层和断裂晚于撕裂带裂纹产生,则可以防止冲裁孔表面分层或锯齿状断口的产生。采用发明问题解决(TRIZ)理论,设计开发了预应力冲孔工艺,既保证冲裁孔表面完整性,又保证冲头寿命。
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高亮庆(1969—),男,研究员级高级工程师,研究方向为汽车钢开发与应用。
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高亮庆(1969—),男,研究员级高级工程师,研究方向为汽车钢开发与应用。
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3 Baosteel Central Research Institute, Wuhan 430080, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1202250863155835301, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, authorId=1202250862983868828, language=CN, stringName=赵江涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 宝钢股份中央研究院,武汉 430080)])])], keywords=[Keyword(id=1202250863277470120, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=EN, orderNo=1, keyword=Hot-rolled steel plate for automobile frame side rail), Keyword(id=1202250863390716332, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=EN, orderNo=2, keyword=Punching), Keyword(id=1202250863512351151, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=EN, orderNo=3, keyword=Delamination), Keyword(id=1202250863650763186, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=EN, orderNo=4, keyword=Prestressed punching), Keyword(id=1202250863730454966, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=CN, orderNo=1, keyword=热轧大梁板), Keyword(id=1202250863826923961, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=CN, orderNo=2, keyword=冲孔), Keyword(id=1202250863915004347, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=CN, orderNo=3, keyword=分层), Keyword(id=1202250863982113215, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=CN, orderNo=4, keyword=预应力冲孔)], refs=[Reference(id=1202250868226748918, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, doi=null, pmid=null, pmcid=null, year=2009, volume=null, issue=null, pageStart=1137, pageEnd=1146, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=张乔英, 刘国平, 赵勇, journalName=第七届(2009)中国钢铁年会大会论文集(中), refType=null, unstructuredReference=张乔英, 刘国平, 赵勇, 等. 低合金高强度钢板拉伸断口分层机理分析研究[C]//
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2017,
52(4): 78-82., articleTitle=冲裁间隙变化对冲裁件断面质量影响的力学分析, refAbstract=null), Reference(id=1202250868415492600, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, doi=null, pmid=null, pmcid=null, year=2021, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[3], rfOrder=2, authorNames=东风商用车有限公司, journalName=null, refType=null, unstructuredReference=东风商用车有限公司. 一种冲模及其预应力冲孔工艺: CN202010750099.2[P].
2021-07-06[2022-08-29]., articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1202250861373256010, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, xref=1, ext=[AuthorCompanyExt(id=1202250861377450315, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, companyId=1202250861373256010, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 Dongfeng Commercial Vehicle Technology Center, Wuhan 430056), AuthorCompanyExt(id=1202250861385838924, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, companyId=1202250861373256010, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 东风商用车技术中心,武汉 430056)]), AuthorCompany(id=1202250861465530705, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, xref=2, ext=[AuthorCompanyExt(id=1202250861469725010, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, companyId=1202250861465530705, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3 宝钢股份中央研究院,武汉 430080)])], figs=[ArticleFig(id=1202250864137302467, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=EN, label=null, caption=null, figureFileSmall=dS+rSNnWyivqSbpMiYVFPg==, figureFileBig=xrcNZHM4i7kBjSZ2nl0Ucg==, tableContent=null), ArticleFig(id=1202250865286541765, tenantId=1146029695717560320, journalId=1189873562199433220, articleId=1202250855731916904, language=CN, label=图1, caption=
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| 抗拉强度Rm/MPa | 屈服强度Rp0.2/MPa | 断后伸长率A/% | 180° 冷弯 |
| 实测值 | 812 | 755 | 22.5 | 未裂 |
| 标准值 | 700~840 | ≥650 | ≥16 | d=2a |
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纵梁用钢板拉伸和弯曲试验结果
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| 抗拉强度Rm/MPa | 屈服强度Rp0.2/MPa | 断后伸长率A/% | 180° 冷弯 |
| 实测值 | 812 | 755 | 22.5 | 未裂 |
| 标准值 | 700~840 | ≥650 | ≥16 | d=2a |
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| 编号 | 直径 | 刃口半径 |
| 凸模 | 1# | 15.07 | 0.081 |
| 3# | 14.96 | 0.279 |
| 凹模 | A | 16.95 | 0.100 |
| B | 15.98 |
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冲孔试验方案 mm
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| 编号 | 直径 | 刃口半径 |
| 凸模 | 1# | 15.07 | 0.081 |
| 3# | 14.96 | 0.279 |
| 凹模 | A | 16.95 | 0.100 |
| B | 15.98 |
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