BOF-LF流程马口铁中显微夹杂物研究  

Research on Micro-inclusions of Tinplate in BOF-LF Process

作　　者：刘伟 贾雅楠[1,2] 陈永洪 王硕明 

机构地区：[1]华北理工大学冶金与能源学院高品质钢连铸实验室,河北唐山063009 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《铸造技术》2016年第5期969-972,共4页Foundry Technology

基　　金：河北省高等学校科学技术研究资助项目(Z2014019);河北省科技计划资助项目(1321101018D)

摘　　要：探讨了制造马口铁三片罐的150吨BOF→LF→CC工艺流程钢中T[O]、[N]含量和显微夹杂形态的演变规律。结果表明:正常坯平均T[O]含量为29.8×10-4%,[N]含量18.1×10-4%。铸坯中显微夹杂主要为Al_2O_3-Ca O复合夹杂、Al_2O_3-Ca S复合夹杂和少量的Si O_2夹杂,正常坯显微夹杂平均含量为8.35个/mm2,非稳态铸坯显微夹杂分别为9.78个/mm2、17.81个/mm2、14.39个/mm2,铸坯显微夹杂物含量仍然偏高,其生产工艺仍须改进之处。The evolvement law of T[O] and [N] content and micro-inclusions pattern under the process flow of 150 t BOF→LF→CC which can make sanitary tinplate was investigated. The result show that the content of T[O] and [N] are 29.8×10-4% and 18.1 ×10-4% respectively in the normal billet. The main micro-inclusions are Al2O3-Ca O complex inclusions,Al2O3-Ca S complex inclusions and few inclusions of Si O2. The average content of micro-inclusions in the normal billet is8.35/mm^2. The contents of micro-inclusions in unsteady state are 9.78/mm2, 17.81/mm2, 14.39/mm^2, respectively. The content of the micro-inclusions is high in the process flow and the production process still need improved.

关 键 词：马口铁三片罐 工艺流程 显微夹杂物 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TF76[金属学及工艺—金属材料]