在工业试验的基础上,对宽厚板连铸机实施动态轻压下后连铸坯中心偏析严重的原因进行了探讨与分析.研究发现:扇形段辊缝实测值与位移传感器测量值之间存在差值,且每个位置差值的偏差较大,导致压下量的实际执行量存在较大偏差,是产生严重中心偏析的重要原因.通过扇形段开口度测量与标定方法的优化改进,将每个扇形段不同位置的辊缝实际值与位移传感器测量值的差值保持在标准差值a,连铸机扇形段的辊缝得到了精确控制,动态轻压下工艺参数得到了精确执行,连铸坯内部质量得到了较大改善.
参考文献
| [1] | Akihi T;Hiroyuki O .Influence of micro hardness and inclusions on stress oriented hydrogen induced cracking of line pipe steel[J].ISIJ International,1996,36(3):334. |
| [2] | 王文军,朱志远,李战军,刘洋,李景光,刘金刚.连铸厚板坯轻压下技术的应用[J].钢铁,2012(03):20-24. |
| [3] | Yim C H;Park J K;You B D .The effect of soft reduction on centre segregation in C C Slab[J].ISIJ International,1996,36(Supplement):231. |
| [4] | Chang H Y;Park J K;Oh K S et al.The control of internal quality by the reduction of blooms with liquid core[J].Steelmaking Conf Proc,1998,81:309. |
| [5] | Oh K S.Development of SR technology for the bloom caster at Pohang Works of POSCO[A].USA:Iron and Steel Society USA,1995:301. |
| [6] | 朱伦才,刘启龙,王志政,臧红臣.改善AH36钢板坯中心偏析的试验研究[J].钢铁,2012(07):36-39,67. |
| [7] | 曹磊,祭程,杨吉林,杨跃标,朱苗勇.轻压下帘线钢大方坯成分偏析特征及形成机制[J].钢铁,2010(08):44-46,60. |
| [8] | 孙群,任子平,姜茂发.管线钢连铸轻压下工艺的研究[J].钢铁研究学报,2010(04):1-4,19. |
| [9] | CHEN Yong,LI Gui-jun,YANG Su-bo,ZHU Miao-yong.Dynamic Soft Reduction for Continuously Cast Rail Bloom[J].钢铁研究学报（英文版）,2007(05):13-17,51. |
| [10] | P. Sivession;T. Ortlund;B. Widell .Improvement of inner quality in continuously cast billets through thermal soft reduction and use of multivariate analysis of saved process variables[J].Ironmaking & Steelmaking: Products and applications,1996(6):504-511. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%