摘要
根据本课题组在国内多家钢厂高级别管线钢方面的系统取样研究和工艺调研,综合分析了管线钢中硫、磷、氮、氧、氢、夹杂物、窄成分冶炼以及铸坯质量控制的关键技术.管线钢生产中铁水预处理、转炉冶炼、精炼、连铸等炼钢过程的系统优化,以及结合高级别管线钢各元素控制的特点和要求的针对性技术系统集成是管线钢杂质元素和夹杂物控制的两个重要方面;采用新的夹杂物改性标准对高级别管线钢钙处理进行控制和加强非稳态浇铸期连铸工艺技术的改进是控制夹杂对管线钢性能危害的关键;连铸工序的工艺优化和完善的设备管理,以及精炼工艺的配合实现无缺陷铸坯生产是高级别管线钢质量稳定的重要保障.
Key technologies for the control of sulphur,phosphorus,nitrogen,oxygen,hydrogen,inclusions,slab quality,and narrow composition refining are assembled on studies by systematic sampling,process,and technologies analyzing about high grade pipeline production in various Chinese steel groups. Systematical process optimization of hot metal pretreatment,converter refining,secondary refining and continuous casting,and the assemble of special controlling technologies for various components against their characterizations and requirements are two important aspects of impurity and inclusion controlling for high grade pipeline steel. The application of the new inclusion modification standard on calcium treatment,and the improvement of process and technologies for unsteady casting are keys for the control of inclusions' harm on pipeline properties. While,the coordination of the optimized continuous casting process,perfect equipment management,and the appropriate refining process are keys for no defect slab production.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2009年第S1期1-6,共6页
Journal of University of Science and Technology Beijing
基金
国家"十一五"科技支撑计划资助项目(2006BAE03A06-1)
关键词
管线钢
夹杂物
杂质
铸坯质量
精炼
连铸
pipeline
inclusion
impurity
slab quality
refining
continuous casting
