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In this paper, it is elaborated the performance characteristics and strengthening mechanism of cold rolled continuous annealed low alloy high strength steel HC500LA for automobile structure as well as the whole production process plan including chemical composition, hot rolling, cold rolling and continuous annealing processes. The production practices and batch trial of automobile manufacturer showed that the HC500LA products of Baotou Steel was with good comprehensive mechanical properties as well as stable and mature production process so that it was with batch supply capacity.
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文章阐述了汽车结构用冷轧连退低合金高强钢HC500LA的性能特征和强化机理,得到了包括化学成分、热轧工艺、冷轧工艺、退火工艺的HC500LA完整生产工艺方案,通过生产实践和汽车生产厂家的批量试用,表明包钢HC500LA产品综合机械性能良好,生产工艺稳定且成熟,具备批量供货能力。
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刘 毅(1987-),男,内蒙古包头市人,硕士,工程师, 现从事冷轧低合金高强钢研制工作。
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刘 毅(1987-),男,内蒙古包头市人,硕士,工程师, 现从事冷轧低合金高强钢研制工作。
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刘 毅(1987-),男,内蒙古包头市人,硕士,工程师, 现从事冷轧低合金高强钢研制工作。
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HC500LA显微组织, figureFileSmall=aOcj9a5UatOzuIZ954UkJg==, figureFileBig=7lyMH+IjPb5MuVXpxnOzZA==, tableContent=null), ArticleFig(id=1187341826085237468, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341682904281457, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 牌号 | 屈服强度 /MPa | 抗拉强度 /MPa | 断后延伸率A80 /% |
| HC500LA | 500~520 | 560~700 | ≥13 |
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HC500LA的力学性能要求
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| 牌号 | 屈服强度 /MPa | 抗拉强度 /MPa | 断后延伸率A80 /% |
| HC500LA | 500~520 | 560~700 | ≥13 |
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| C | Si | Mn | P | S | Alt | Ti+Nb |
| ≤0.10 | ≤0.15 | ≤1.60 | ≤0.020 | ≤0.005 | ≥0.020 | 0.005~0.150 |
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包钢生产的HC500LA化学成分(质量分数)%
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| C | Si | Mn | P | S | Alt | Ti+Nb |
| ≤0.10 | ≤0.15 | ≤1.60 | ≤0.020 | ≤0.005 | ≥0.020 | 0.005~0.150 |
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| 产品编号 | 产品厚度 /mm | 屈服强度 /MPa | 抗拉强度 /MPa | 断后延伸率A80 /% |
| 技术要求 | | 500~520 | 560~700 | ≥13 |
| 21B107921 | 1.0 | 548 | 622 | 16.0 |
| 21B107952 | 2.0 | 551 | 645 | 15.5 |
| 21B110629 | 1.6 | 558 | 634 | 15.5 |
| 21B107941 | 1.3 | 564 | 645 | 15.5 |
), ArticleFig(id=1187341826383033057, tenantId=1146029695717560320, journalId=1185652524569653253, articleId=1187341682904281457, language=CN, label=表3, caption=
HC500LA产品实际力学性能
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| 产品编号 | 产品厚度 /mm | 屈服强度 /MPa | 抗拉强度 /MPa | 断后延伸率A80 /% |
| 技术要求 | | 500~520 | 560~700 | ≥13 |
| 21B107921 | 1.0 | 548 | 622 | 16.0 |
| 21B107952 | 2.0 | 551 | 645 | 15.5 |
| 21B110629 | 1.6 | 558 | 634 | 15.5 |
| 21B107941 | 1.3 | 564 | 645 | 15.5 |
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