Article(id=1187341679104241975, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, articleNumber=1009-5438(2022)02-0012-07, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1644422400000, receivedDateStr=2022-02-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1761013916040, onlineDateStr=2025-10-21, pubDate=1650816000000, pubDateStr=2022-04-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1761013916040, onlineIssueDateStr=2025-10-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1761013916040, creator=13701087609, updateTime=1761013916040, updator=13701087609, issue=Issue{id=1187341678487679284, tenantId=1146029695717560320, journalId=1185652524569653253, year='2022', volume='48', 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=1761013915892, creator=13701087609, updateTime=1761015806887, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1187349609945907689, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1187349609945907690, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1187341678487679284, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=12, endPage=18, ext={EN=ArticleExt(id=1187341679305568570, articleId=1187341679104241975, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Research on Quality of Continuous Casting Head Slab of Interstitial Free (IF) Steel, columnId=1187340472918880861, journalTitle=Science & Technology of Baotou Steel, columnName=Production Practice and Management, runingTitle=null, highlight=null, articleAbstract=
The surface quality, rimhole, center porosity, center segregation, contents of oxygen and nitrogen and inclusions for the head slab of IF steel produced by a steel mill are studied as well as the rolling defects of head slab are tracked and with the treatment of peeling with flame. The study results showed that the surface quality and rimhole of head slab were improved with the increase of slab length; level of center porosity for internal soundness exceeded the standard at slab length of 1 m, while there was no abnormality seen for center segregation; contents of oxygen and nitrogen tended to decrease with the increase of slab length; number of such inclusions as Al2O3, TiN and complex inclusion of Al2O3-TiN decreased with the increase of slab length; there was large complex inclusion of Al2O3-MgO-CaO at 1 m of head slab; main rolling defects of head slab were such subcutaneous inclusion defects as deoxidation product of Al2O3 and slag entrapment of mould level fluctuation; quality of head slab could be effectively improved with the treatment of peeling with flame.
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针对某钢厂生产的IF钢,对头坯的表面质量、皮下气泡、中心疏松、中心偏析、氧氮含量和夹杂物进行研究,并对头坯轧制缺陷进行跟踪和采用火焰扒皮处理。研究结果表明:头坯表面质量和皮下气泡均随着铸坯长度的增加而逐步改善;内部质量中心疏松级别在铸坯长度1 m处存在超标现象,而中心偏析未见异常;氧和氮含量均沿铸坯长度的增加呈降低趋势;夹杂物主要为Al2O3、TiN和Al2O3-TiN复合夹杂物,其数量随着铸坯长度的增加而逐渐减少;在头坯1 m处存在Al2O3-MgO-CaO大型复合夹杂物;头坯轧制缺陷主要为脱氧产物Al2O3类和结晶器液位波动卷渣类的皮下夹杂缺陷;火焰扒皮处理可以有效提高头坯质量。
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李 彬(1984-),男,内蒙古包头市人,工程师, 现从事炼钢产品质量管理工作。
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李 彬(1984-),男,内蒙古包头市人,工程师, 现从事炼钢产品质量管理工作。
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30(1):49-51., articleTitle=连铸坯表面夹渣分析及预防措施, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1187342017014149153, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341679104241975, xref=null, ext=[AuthorCompanyExt(id=1187342017022537762, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341679104241975, companyId=1187342017014149153, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Inner Mongolia Baotou Steel Rare Earth Steel Plate Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China), AuthorCompanyExt(id=1187342017026732067, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341679104241975, companyId=1187342017014149153, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=内蒙古包钢稀土钢板材有限责任公司, 内蒙古 包头 014010)])], figs=[ArticleFig(id=1187342018595401794, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341679104241975, language=EN, label=null, caption=null, figureFileSmall=z8aWILgTFeDjJzbhrIBM4w==, figureFileBig=2T/GOB1CfGTHuI/CPnC/KQ==, tableContent=null), ArticleFig(id=1187342018670899267, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341679104241975, language=CN, label=图1, caption=
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| 项目 | C | Si | Mn | P | S | Alt | Ti |
| 平均值 | 0.002 1 | 0.026 | 0.17 | 0.011 | 0.004 | 0.039 | 0.057 |
| 内控值 | ≤0.003 0 | ≤0.030 | 0.12~0.20 | ≤0.015 | ≤0.010 | 0.025~0.050 | 0.052~0.067 |
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IF钢化学成分(质量分数)%
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| 项目 | C | Si | Mn | P | S | Alt | Ti |
| 平均值 | 0.002 1 | 0.026 | 0.17 | 0.011 | 0.004 | 0.039 | 0.057 |
| 内控值 | ≤0.003 0 | ≤0.030 | 0.12~0.20 | ≤0.015 | ≤0.010 | 0.025~0.050 | 0.052~0.067 |
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| 取样位置 | 中心偏析 | 中心疏松 |
| 1 m | 0.5 | 2.0 |
| 2 m | 0.5 | 0.5 |
| 3 m | 0.5 | 0.5 |
| 4 m | 0.5 | 0.5 |
| 5 m | 0.5 | 0.5 |
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低倍检验结果级
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| 取样位置 | 中心偏析 | 中心疏松 |
| 1 m | 0.5 | 2.0 |
| 2 m | 0.5 | 0.5 |
| 3 m | 0.5 | 0.5 |
| 4 m | 0.5 | 0.5 |
| 5 m | 0.5 | 0.5 |
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