在现有的生产加工过程中,为提高低碳铝镇静钢的性能和质量,对钢液钙处理后不同时期钢中夹杂物类型、存在形式的变化进行定量和定性研究。研究结果表明:钙处理后,钢中镁铝尖晶石与硫化钙会有不同程度的结合并相互扩散;在现有工艺水平下不增加CaS含量的前提下,尽可能使三氧化二铝夹杂物转变为铝酸钙夹杂物的合适喂钙量为0.001 5%~0.002 6%。 In the existing production and processing, in order to improve the performance and quality of the low carbon aluminum killed steel, the changes of the types and existing forms of the inclusions in the steel at different periods after calcium treatment were quantitatively and qualitatively studied. The results show that after the calcium treatment, the Mg-Al spinel and the calcium sulfide in the steel will combine with each other and diffuse to each other. Under the premise of not increasing the CaS content in the existing technology level, Appropriate amount of calcium converted into calcium aluminate inclusions is 0.001 5% to 0.002 6%.