Article(id=1198266570628759916, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198266568997175650, articleNumber=1009-5438(2023)02-0025-05, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1678204800000, receivedDateStr=2023-03-08, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763618613153, onlineDateStr=2025-11-20, pubDate=1682352000000, pubDateStr=2023-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763618613153, onlineIssueDateStr=2025-11-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763618613153, creator=13701087609, updateTime=1763618613153, updator=13701087609, issue=Issue{id=1198266568997175650, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='2', 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=1763618612765, creator=13701087609, updateTime=1763619383107, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1198269800108618470, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198266568997175650, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1198269800108618471, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198266568997175650, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=25, endPage=29, ext={EN=ArticleExt(id=1198266570901389677, articleId=1198266570628759916, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Analysis on External Surface Defects of Seamless Steel Pipe for High Strength Oil Cylinder, columnId=1198265195702354688, journalTitle=Science & Technology of Baotou Steel, columnName=Varieties and Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=

In this article, the problem of high scrap rate caused by surface defects of a batch of seamless steel pipes for high strength hydraulic cylinders produced on site is analyzed and studied. There are mainly three categories of surface defects, they are rolling skin, pits and pitted surface by analyzing their morphology. The defects are detected and analyzed with such analytical methods as metallographic examination and scanning electron microscope. The results showed that rolling skin and pits were caused by the existing surface cracks of billet before rolling as well as pitted surface was caused due to the roll compacting of surface scale onto pipe body in the process of hot rolling. In order to eliminate the above defects, the corresponding rectification measures are taken as well as the continuous casting and rolling processes are optimized. As a result, the surface quality of products is greatly improved and scrap rate is decreased from 30.6% to 1.7%.

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文章针对现场生产的某批高强度液压油缸用无缝钢管表面缺陷引起的返废率高的问题进行了分析研究,通过分析缺陷形貌将其分为结疤、凹坑和麻面三大类。通过金相、扫描电镜等分析方法对各类缺陷进行了检测分析。结果表明,结疤、凹坑缺陷的形成是由轧制前原始坯料已经存在的表面裂纹引起的,麻面缺陷的形成是热轧过程中表面氧化铁皮被轧压至管体上产生的。为了消除上述缺陷,有针对性地采取了整改措施,优化了连铸和轧制工艺。整改后的产品表面质量大幅度提高,返废率从30.6%降低到了1.7%。

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张学颖(1980-),女,满族,辽宁省兴城市人,硕士,高级工程师,现从事无缝钢管新产品研发及质量控制工作。

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张学颖(1980-),女,满族,辽宁省兴城市人,硕士,高级工程师,现从事无缝钢管新产品研发及质量控制工作。

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编号	A(细系)	A(粗系)	B(细系)	B(粗系)	C(细系)	C(粗系)	D(细系)	D(粗系)	DS
1#	0	0	0.5	0	0	0	1	0	0.5
2#	0.5	0	1.5	0	0	0.5	0	0	1
3#	0.5	0	0	0	0	0	1	0	0.5
4#	0	0	0.5	0	0	0.5	0	0	1

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编号	A(细系)	A(粗系)	B(细系)	B(粗系)	C(细系)	C(粗系)	D(细系)	D(粗系)	DS
1#	0	0	0.5	0	0	0	1	0	0.5
2#	0.5	0	1.5	0	0	0.5	0	0	1
3#	0.5	0	0	0	0	0	1	0	0.5
4#	0	0	0.5	0	0	0.5	0	0	1

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