超低氧弹簧钢60Si2MnA精炼过程夹杂物的研究  

Study on Inclusions in Ultra Low Oxygen 60Si2MnA Spring Steel During Refining Process

作　　者：王郢[1] 李宏[1] 郭佳 王新华[1] 王万军[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《钢铁》2008年第10期29-33,共5页Iron and Steel

基　　金：973新一代钢铁材料重大基础研究资助项目(2004C13619106)

摘　　要：采用LD-LF-VD-CC的工艺路线,出钢采用Al脱氧,造高碱度低氧化性精炼渣,生产超低氧弹簧钢60Si2MnA。研究了精炼过程中夹杂物的成分、尺寸、形貌等变化情况。探讨了夹杂物中MgO和CaO的来源。计算得出了60Si2MnA与CaO-Al2O3-SiO2系平衡时的等氧活度和等硅线。LD-LF-VD-CC was adopted to produce the ultra low oxygen spring steel 60Si2MnA, the strong deoxidation was carried out by aluminium, and high basicity and low oxidizing slag was made during tapping to intensify refining. Non-metallic inclusions in molten steel were studied. The origins of MgO and CaO in inclusions were discussed. Figure of iso-ao and iso-[Si] was deduced under the condition of equilibrium between steel and slag.

关 键 词：超低氧弹簧钢 Al脱氧 夹杂物 

分 类 号：TF762.5[冶金工程—钢铁冶金]