| 锰硫比对SPHC热轧薄板边部舌状裂纹的影响 |
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| 引用本文： | 徐海卫,于洋,朱国森,李金宝,安冬阳,焦会立,关建东,刘兰宵,吴耐,王伦,武军宽,余威.锰硫比对SPHC热轧薄板边部舌状裂纹的影响[J].轧钢,2011,28(5):14-16. |
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| 作者姓名： | 徐海卫 于洋 朱国森 李金宝 安冬阳 焦会立 关建东 刘兰宵 吴耐 王伦 武军宽 余威 |
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| 作者单位： | 首钢技术研究院 |
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| 摘 要： | 针对迁钢2160mm热轧线生产的SPHC热轧薄板经常出现边部舌状裂纹缺陷，研究了舌状裂纹的形貌及形成机理。结果表明，SPHC薄板边部舌状裂纹缺陷的产生是由于Mn含量较低导致锰硫比较低，使板坯边角部位易出现微裂纹，并在轧制过程中流变至带钢边部而形成。经实践，w(Mn)/w(S)>20时，可有效避免SPHC板边部舌状裂纹的产生。
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| 关 键 词： | 舌状裂纹 SPHC热轧薄板 锰硫比 |
Effect of w(Mn)/w(S) on Ligulate Crack of SPHC Hot-rolled Sheet |
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| XU Hai-wei,YU Yang,ZHU Guo-sen,LI Jin-bao,AN Dong-yang,JIAO Hui-li,GUAN Jian-dong,LIU Lan-xiao,WU Nai,WANG Lun,WU Jun-kuan,YU Wei.Effect of w(Mn)/w(S) on Ligulate Crack of SPHC Hot-rolled Sheet[J].Steel Rolling,2011,28(5):14-16. |
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| Authors: | XU Hai-wei YU Yang ZHU Guo-sen LI Jin-bao AN Dong-yang JIAO Hui-li GUAN Jian-dong LIU Lan-xiao WU Nai WANG Lun WU Jun-kuan YU Wei |
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| Affiliation: | XU Hai-wei1,YU Yang1,ZHU Guo-sen1,LI Jin-bao2,AN Dong-yang2,JIAO Hui-li2,GUAN Jian-dong2,LIU Lan-xiao2,WU Nai2,WANG Lun2,WU Jun-kuan2,YU Wei2(1.Shougang Research Institute of Technology,Beijing 100041,China,2.Shougang Qianan Iron & Steel Co.,Ltd.,Qianan 064404,China) |
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| Abstract: | To the problem of ligulate crack on edge of SPHC hot-rolled sheet at Qiangang,the appearance and formation mechanism of the defect were investigated.The results show that the main reason of ligulate crack on edge of SPHC sheet is w(Mn)/w(S) decreasing result in micro-cracks on corner site rheology to strip edge during rolling.The production practice show that edge ligulate crack can be avoided when w(Mn)/w(S)>20. |
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| Keywords: | ligulate crack SPHC hot-rolled sheet ratio of w(Mn)/w(S) |
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