为了探讨真空精炼和过热度对弹簧钢连铸坯中心偏析的影响,采用两种生产工艺:转炉→LF→CD→连铸和转炉→LF→连铸,并取不同的过热度(30℃和22℃),生产60Si2Mn弹簧钢连铸坯.在矩形坯上取样分析碳和硫的偏析情况,并进行对比.其结果是:经过真空精炼,连铸坯的碳偏析指数从1.72降低到1.28;硫偏析指数从2.68降低到1.68.
In order to discuss the effects of vacuum refining and superheat on spring steel bloom eenterline segrega-tion, two production processes are introduced, one is converter → LF → VD →continuous casting , the other is converter →LF→continuous casting. Different degrees of superheat at 30 ℃ and 22℃ were separately adopted to produce 60Si2Mn spring steel bloom. Two samples were taken in spring steel bloom, and the segregation of element C and S were analyzed. The results show that after vacuum refining, the biggest carbon segregation index dropped to 1.28 from 1.72, and the largest sulfur segregation index dropped to 1.68 from 2.68.
参考文献
| [1] | 倪满森.连铸坯的中心偏析问题[J].连铸,2001(06):24-26,44. |
| [2] | 单麟天.重轨钢的炉外精炼与连铸[J].钢铁钒钛,1996(02):51. |
| [3] | 梁福斌,刘新生.150 t顶底复吹转炉-150 t钢包炉生产60Si2Mn（A）弹簧钢的工艺和质量[J].特殊钢,2006(04):39-41. |
| [4] | 蔡开科;程士富.连续铸钢原理与工艺[M].北京:冶金工业出版社,2008 |
| [5] | 王坤 .高碳钢矩形坯内部质量研究[D].北京科技大学,2006. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%