Analysis and Control of Hot-Rolled Surface Inclusions of Low Carbon Aluminium Killed Steel

摘要：

　　The study investigated surface inclusions of hot rolled strips of low carbon Al-killed steel,especially focusing on the principle of surface inclusion in the process of medium-thin thickness slab casting following after LF refining procedure.Factors affecting the calcium treatment have been investigated,it is established that such practices attribute to stabilize the efficiency of calcium treatment remarkably,including reducing the T.O content of liquid steel during LF refining by process optimization,and decreasing re-oxidization of liquid steel in tundish by improving the performance of refractory utilized in tundishes.The problem of mold flux entrapment,taking place in steady casting process,consequently leading to surface inclusions,has been solved by optimization on the structure of SEN and the performance of mold powder.

关键词： low carbon Al-killed steel surface inclusions Calcium treatment submerged nozzle mold powder performance

作者: Mengying LI Hongbo ZHANG Jie YANG Zhanuo WANG Zhixin TONG Huixiao FENG

作者单位: Tangshan Iron and Steel Group Co.,Ltd,Tangshan,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: 1066-1069

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）