S53钢中显微夹杂物分析  

Analysis of Micro Inclusions in S53 Steel

作　　者：王硕明[1] 王雁[1] 王若思 

机构地区：[1]河北联合大学冶金与能源学院高品质钢连铸实验室,河北唐山063000 [2]河北钢铁集团采购总公司唐山分公司,河北唐山063000

出　　处：《铸造技术》2014年第10期2336-2338,共3页Foundry Technology

基　　金：河北省自然科学基金资助项目(E2012209023)

摘　　要：针对某钢厂丰田钢S53综合探伤合格率不足60%的情况,分析各工序T[O]、[N]的演变规律,采用示踪分析法对显微夹杂含量进行系统分析。钢材全氧T[O]的平均值为11.2×10-4%,[N]平均含量为53.8×10-4%。铸坯中显微夹杂物主要为CaO-Al2O3夹杂和MnS夹杂。头坯中夹杂物数量的平均值为3.05个/mm2,正常坯中夹杂物数量的平均值为1.924个/mm2,铸坯的洁净度达到了较高的水平,夹杂物在结晶器内有一定的去除效果。Aimed at the situation of Toyota S53 steel whose comprehensive inspection qualified rate was less than 60% in a steel plant, the evolution law of [N] and T [O] in each step process was analyzed, and the micro inclusions content was systematically analyzed using tracer analysis method. The average content of total oxygen T [O] in steel is 11.2×10^-4%, [N] is 53.8×10^-4%. Micro inclusions in slab are mainly CaO-AI203 inclusions and MnS inclusions. Average number of inclusion in the head billet is 3.05/mm^2, in the normal billet is 1.924/mm^2. The cleanliness of the slab reach a higher level, there is certain inclusions removal effect in the crystallizer.

关 键 词：非稳态浇注 S53 显微夹杂物 

分 类 号：TF771[冶金工程—钢铁冶金] TG115[金属学及工艺—物理冶金]