| CSP工艺生产热轧板卷边裂的分析和控制 |
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| 引用本文： | 孙彦辉,赵长亮,孟征兵,蔡开科,成小军,吴光亮,周春泉. CSP工艺生产热轧板卷边裂的分析和控制[J]. 特殊钢, 2006, 27(4): 47-49 |
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| 作者姓名： | 孙彦辉 赵长亮 孟征兵 蔡开科 成小军 吴光亮 周春泉 |
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| 作者单位： | 1. 北京科技大学冶金与生态工程学院冶金研究中心,北京100083
2. 湖南华菱涟源钢铁有限公司,娄底417009 |
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| 摘 要： | 经分析得出涟钢采用CSP工艺生产SS400钢板卷时，因不合理的二冷水量使70mm薄板坯横向冷却不均匀和角部过冷，导致奥氏体中AlN析出造成晶界脆性，带钢在弯曲和矫直时产生边裂。通过控制钢中Als含量为0．02％。0．03％及减少连铸过程吸氮和降低板坯边缘二冷水量等工艺措施，使SS400钢板卷的优等品率从92．27％提高到98．09％。
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| 关 键 词： | 薄板坯 热轧板卷 边裂 控制工艺 |
| 收稿时间： | 2006-02-13 |
| 修稿时间： | 2006-02-13 |
Control and Analysis on Edge Crack of Hot Rolled Strip Coil Produced by CSP Process |
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| Sun Yanhui,Zhao Changliang,Meng Zhengbing,Cai Kaike,Cheng Xiaojun,Wu Guangliang,Zhou Chunquan. Control and Analysis on Edge Crack of Hot Rolled Strip Coil Produced by CSP Process[J]. Special Steel, 2006, 27(4): 47-49 |
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| Authors: | Sun Yanhui Zhao Changliang Meng Zhengbing Cai Kaike Cheng Xiaojun Wu Guangliang Zhou Chunquan |
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| Affiliation: | 1 Metallurgical Research Center, Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 100083; 2 Lianyuan Iron and Steel Co Ltd, Loudi 417009 |
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| Abstract: | It is obtained by analysis that the edge cracks occur during bending and straightening of strip due to 70 mm thin slab horizontal plane non-homogeneous cooling and edge over-cooling during production of SS400 steel strip Coil with irrational secondary cooling water rate led to precipitation of AlN in austenite and grain boundary brittle, The high quality product rate of SS400 steel strip coil increased from 92.27% to 98.09% by improved technology measure including to control Als content 0.02% - 0.03% in steel, decrease nitrogen pick-up during concasfing and secondary cooling water rata at plate slab edge. |
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| Keywords: | Thin Slab Hot Rolling Strip Coil Edge Crack Controlling Technology |
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