Development of Dynamic Calcium Treatment Technology in Pipeline Steel

摘要：

　　The accurate control of inclusions is becoming more important to achieve the higher cleanliness in steel.This study focuses on effect of aluminum and sulfur content on alumina modification by calcium treatment,based on systematic sampling during the processes of BOF–LF–calcium treatment–tundish–continuous casting.It is found that when the same Ca wire amount being fed,inclusion characteristics are obviously different owing to the different aluminum and sulfur content before calcium treatment in different heats and alumina inclusions are more difficult to be modified by calcium into calcium aluminates with increasing sulfur content and aluminum content in steel.A new method of dynamically adjusting Ca wire amount being fed into molten steel was put forward according to temporal steel composition,especially aluminum and sulfur content to better modify alumina inclusions and remove them.

关键词： calcium treatment alumina inclusions pipeline steel

作者: Dongwei ZHAO Haibo LI Guosen ZHU Pan GAO Jian YANG

作者单位: Shougang Research Institute of Technology,Beijing 100043,China Shougang Jingtang United Iron & Steel Co.,Ltd,Tangshan 063200,Hebei,China Shougang Qianan Iron & Steel Co.,Ltd,Qianan 064404,Hebei,China

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 1039-1042

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）