| 参数对70钢小方坯二次枝晶间距和中心偏析的影响 |
| |
| 引用本文： | 李鹏善,张晓峰,纪元,闵云峰,陈志凌,张家泉.参数对70钢小方坯二次枝晶间距和中心偏析的影响[J].连铸,2017,36(6):30-35. |
| |
| 作者姓名： | 李鹏善 张晓峰 纪元 闵云峰 陈志凌 张家泉 |
| |
| 作者单位： | 1. 北京科技大学冶金与生态工程学院，北京 100083 2. 中冶连铸北京冶金技术研究院， 北京 100028 |
| |
| 摘 要： | 试验研究了70钢150 mm×150 mm 小方坯连铸不同工艺参数对铸坯中心C、Mn偏析和二次枝晶间距的影响。结果表明，在一定工况条件下，铸坯中心偏析指数和二次枝晶间距均随拉速的增大而增大，随压下量和比水量的增大而减小。凝固中心处的C元素偏析指数在1.00～1.26之间，而Mn元素偏析指数仅为0.98～1.06。C、Mn元素的偏析规律相同，且随着C偏析的增加，Mn的偏析比也会不断增大。
|
| 关 键 词： | 高碳钢 小方坯连铸 二次枝晶间距 中心偏析 |
Effect of CC process parameters on secondary dendrite arming spacing and central segregation of 70 steel billets |
| |
| LI Peng-shan,ZHANG Xiao-feng,JI Yuan,MIN Yun-feng,CHEN Zhi-ling,ZHANG Jia-quan.Effect of CC process parameters on secondary dendrite arming spacing and central segregation of 70 steel billets[J].CONTINUOUS CASTING,2017,36(6):30-35. |
| |
| Authors: | LI Peng-shan ZHANG Xiao-feng JI Yuan MIN Yun-feng CHEN Zhi-ling ZHANG Jia-quan |
| |
| Affiliation: | （1. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing， 100083， China 2. Beijing Metallurgical Technology Research Institute， CCTEC， Beijing 100028， China） |
| |
| Abstract: | The influence of different continuous casting process parameters on secondary dendrite arming spacing and central segregation（C and Mn） of 70 steel billets of 150mm×150mm has been studied. The results show that， for given process parameters， both central segregation index and secondary dendrite arming spacing increase with the increase of casting speed， and decrease with the increase of soft reduction and secondary cooling intensity. The results show that segregation index of C is between 1.00-1.26 at the solidification center， while the segregation index of Mn is around 0.98-1.06. The segregation tendency of C and Mn are similar under the casting conditions， and the segregation index of Mn increases with the increase of carbon content. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《连铸》浏览原始摘要信息 |
|
点击此处可从《连铸》下载全文 |
