Article(id=1198550350513926949, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550344985837722, articleNumber=1009-5438(2023)05-0042-04, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1691769600000, receivedDateStr=2023-08-12, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763686271550, onlineDateStr=2025-11-21, pubDate=1698163200000, pubDateStr=2023-10-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763686271550, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763686271550, creator=13701087609, updateTime=1763686271550, updator=13701087609, issue=Issue{id=1198550344985837722, tenantId=1146029695717560320, journalId=1185652524569653253, year='2023', volume='49', issue='5', 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=1763686270233, creator=13701087609, updateTime=1764231160152, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200835779015602647, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550344985837722, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200835779015602648, tenantId=1146029695717560320, journalId=1185652524569653253, issueId=1198550344985837722, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=42, endPage=45, ext={EN=ArticleExt(id=1198550350895608642, articleId=1198550350513926949, tenantId=1146029695717560320, journalId=1185652524569653253, language=EN, title=Analysis on Performance Fluctuation of Low Alloy High Strength Steel HC500LA, columnId=1187095652984042303, journalTitle=Science & Technology of Baotou Steel, columnName=Variety Quality and Experimental Study, runingTitle=null, highlight=null, articleAbstract=
The main causes for strength fluctuation are determined to be abnormal microstructure and length differences of furnace area in the two continuous annealing production lines by analyzing the causes aiming at the problems of great strength fluctuation and low qualified rate for HC500LA steel with small batch trial production of Rare Earth Steel Plate Plant. The abnormal microstructure and strength fluctuation caused by incomplete recrystallization are reduced by optimizing the compositions. The design of differentiated annealing temperature and speed of steel strip for the two continuous annealing production lines is carried out so that the strength fluctuation of steel strip is significantly improved and qualification rate of performances is increased from 87.8% to 98.2%.
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针对稀土钢板材厂小批量试制的HC500LA钢强度波动大、合格率低的现象,进行了原因分析,确定了组织异常和两条连退线的炉区长度差异是造成强度波动的主要原因。通过优化成分,减少了再结晶不完全造成的显微组织异常和强度波动。对两条连退产线进行了差异化的退火温度和钢带速度设计,钢带的强度波动现象明显改善,性能合格率从87.8%提高到98.2%。
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张秀飞(1977-),男,山东省临沂市人,硕士,高级工程师,现从事板带材产品研发工作。
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张秀飞(1977-),男,山东省临沂市人,硕士,高级工程师,现从事板带材产品研发工作。
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张秀飞(1977-),男,山东省临沂市人,硕士,高级工程师,现从事板带材产品研发工作。
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| C | Si | Mn | P | S | Alt | Ti+Nb+V |
| ≤0.10 | ≤0.60 | ≤1.80 | ≤0.025 | ≤0.025 | ≥0.015 | ≤0.22 |
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HC500LA化学成分要求(质量分数)%
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| C | Si | Mn | P | S | Alt | Ti+Nb+V |
| ≤0.10 | ≤0.60 | ≤1.80 | ≤0.025 | ≤0.025 | ≥0.015 | ≤0.22 |
), ArticleFig(id=1198570136157385415, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550350513926949, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 牌号 | 屈服强度
Rp0.2/MPa | 抗拉强度
Rm/MPa | 断后延伸率
A80/% |
| HC500LA | 500~620 | 550~710 | ≥13 |
), ArticleFig(id=1198570136308380362, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550350513926949, language=CN, label=表2, caption=
HC500LA力学性能
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| 牌号 | 屈服强度
Rp0.2/MPa | 抗拉强度
Rm/MPa | 断后延伸率
A80/% |
| HC500LA | 500~620 | 550~710 | ≥13 |
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连退
产线 | 退火温度
/℃ | 屈服强度
/MPa | 抗拉强度
/MPa | 伸长率
/% |
| 2#线 | 791 | 593 | 675 | 13 |
| 791 | 588 | 672 | 14 |
| 1#线 | 797 | 537 | 624 | 16.5 |
| 799 | 557 | 649 | 16.5 |
), ArticleFig(id=1198570136543261393, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1198550350513926949, language=CN, label=表3, caption=
1.5 mm HC500LA连退工艺及力学性能
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连退
产线 | 退火温度
/℃ | 屈服强度
/MPa | 抗拉强度
/MPa | 伸长率
/% |
| 2#线 | 791 | 593 | 675 | 13 |
| 791 | 588 | 672 | 14 |
| 1#线 | 797 | 537 | 624 | 16.5 |
| 799 | 557 | 649 | 16.5 |
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