摘要
通过80 t LD-LF(VD)-CC流程,采用转炉出钢铝沉淀脱氧,出钢后加铝粉强扩散脱氧工艺所生产的60Si2Mn弹簧钢铸坯总氧含量(T.O)为10×10^(-6),[S]0.005%,[P]0.010%。分析结果表明,LF末期和VD末期钢水中的夹杂物主要为CaO(Mgo)-Al_2O_3-CaS-SiO_2系;铸坯中的夹杂物主要为CaO(Mgo)-Al_2O_3-CaS-SiO_2-TiN复合夹杂。因为连铸时保护浇铸不当,使[N]增加,促使铸坯含TiN夹杂。
Spring steel 60Si2Mn produced by 80 t LD - LF（VD） - CC flow sheet using aluminum killing during tapping and aluminum powder strong diffusion deoxidation after tapping to get total oxygen content （ T. O） in billet of steel 10 × 10^-6, IS] 0. 005%, [P] 0. 010%. Analysis results showed that the main inclusion in steel at end phase of LF and end phase of VD was CaO（MgO） -Al2O3-CaS-SiO2 series, the main inclusion in billet was CaO（MgO）-Al2O3-CaS-SiO2- TiN compound inclusion. As shielding practice was unsuitable led to increasing [ N] and containing TiN inclusion in billet.
出处
《特殊钢》
北大核心
2008年第2期47-49,共3页
Special Steel
