方坯连铸机内不同形貌夹杂物的去除行为  

Removal of Inclusion with Different Morphology in a Continuous Billet Caster

作　　者：张秀香[1,2] 陈宏豫 雷洪[1] 耿佃桥[1] 陈国军[1] 陈健[1] 赫冀成[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004 [2]本溪北台钢铁(集团)有限责任公司,辽宁本溪117022 [3]承德建龙特殊钢有限公司,河北兴隆067201

出　　处：《工业加热》2011年第2期46-49,共4页Industrial Heating

基　　金：国家高技术研究发展计划(2009AA03Z530);国家自然科学基金;上海宝钢集团公司联合资助项目(50834010);教育部科学技术研究重点项目(108036);高等学校学科创新引智计划(B07015);教育部留学回国人员科研启动基金(20071108-2);辽宁省科学技术计划项目(2009221007);中央高校基本科研业务费(N100409007);东北大学留学归国博士启动基金资助

摘　　要：采用数值模拟方法研究小方坯连铸结晶器的三维流场和夹杂物运动轨迹,探讨了粒子形状对夹杂物去除率的影响。结果表明:相同形状夹杂物,随着粒径的增大,夹杂物的去除率随之增大;相同粒径的夹杂物,形状因子越小的夹杂物的去除率越高;对于5μm以下尺寸的夹杂物,夹杂物的形状和尺寸对夹杂物运动行为的影响可以忽略。Numerical simulation is applied to study the three dimensional flow field and the inclusions＇trajectories in the continuous billet caster in order to have a deep insight into the effect of particle shape on the inclusion removal rate. The numerical results show that for the inclusions with the same shape, the inclusion removal rate increases with the increase of inclusion size. For the inclusion with the same size, the removal rate of the inclusion increases with the decrease of particle shape factor. For the inclusion smaller than 5 micros, the effect of the size and morphology of inclusions on the inclusion movement is very weak.

关 键 词：方坯连铸机 钢液 湍流 夹杂物 颗粒形状因子 

分 类 号：TF777.2[冶金工程—钢铁冶金]