工程科学学报，第38卷，第1期：34-40,2016年1月 Chinese Journal of Engineering,Vol.38,No.1:34-40,January 2016 D0l:10.13374/j.issn2095-9389.2016.01.005;http://journals..ustb.edu.cn 钢中非金属夹杂物形态对其去除行为的影响 敏12)区，郝阳2》，马铖佑2)，王林静2) 1)北京科技大学钢铁治金新技术国家重点实验室，北京1000832)北京科技大学治金与生态工程学院，北京100083 ☒通信作者，E-mail:worldmind(@163.com 摘要采用物理模拟手段研究球形、立方体、圆柱体、树枝状、团簇状等钢中常见形状夹杂物形状修正系数的差异性，并分 析粒子表面形貌和运动取向对形状修正系数的影响.粒子的形状修正系数与阻力系数满足线性正相关，可以用形状修正系 数评价粒子的上浮去除能力：在体积相同情况下，同类型夹杂物粒子的去除能力依次为树枝状（垂直）<粗糙球形<立方体< 圆柱（半经6mm)<圆柱（半经4mm)<树枝状（水平）<团簇状（水平）<光滑球形：粗糙表面的球形其表面积约为光滑球形 的2倍，其形状修正系数同时增加2.1倍。简单粒子的形状修正系数受运动取向影响较小，复杂粒子则受运动取向影响较大， 树枝状颗粒垂直上浮时的形状修正系数约为水平上浮时的2倍 关键词炼钢：非金属夹杂物：形态：夹杂物去除：模拟实验 分类号T703.5*4 Effect of the morphologies of non-metallic inclusions on their removal behavior WANG Min,HAO Yang,MA Cheng-you),WANG Linjing) 1)State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China 2)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:worldmind@163.com ABSTRACT The differences in shape correction coefficient (SCC)of common inclusions in molten steel including spherical,cubic, cylindrical,dendritic and cluster particles were studied by a physical simulation method.The effects of inclusion surface morphologies and movement orientation on the SCC were analyzed on the basis of simulation results.The SCC can be used to evaluate the inclusion removal ability because of a linear correlation relationship between the SCC and the resistance coefficient of inclusions.For inclusions with the same volume but different shapes,the removal ability increase in order as follows:dendritic particles with vertical floatation, spherical particles with coarse surfaces,cubic particles,cylindrical particles of 6 mm in radium,cylindrical particles of 4 mm in ra- dium,dendritic particles with horizontal floatation,clusters,and spherical particles with smooth surfaces.When the surface area of spherical particles with coarse surfaces is approximately 2 times as large as that of spherical particles with smooth surfaces,the SCC of spherical particles with coarse surfaces increases by 2.I times compared with the smooth ones.For simple particles,movement orienta- tion has just limited effect on the SCC,but it influences the SCC of complex particles greatly.The SCC of dendritic particles with verti- cal floatation is about twice of that with horizontal floatation. KEY WORDS steelmaking:non-metallic inclusions:morphology;inclusion removal:simulation experiment 钢中非金属夹杂物的形态特征会影响钢液的洁净寸和分布达到不影响钢材使用性能的水平.高品质钢 度”，洁净钢要求钢中非金属夹杂物的形状、类型、尺 对夹杂物的控制要求则更高，如高品质轴承钢中全氧 收稿日期：201507-10 基金项目：国家自然科学基金资助项目(51404018)：中央高校基本科研业务费资助项目(FRF-TPH4H25A2):钢铁治金新技术国家重点实验 室基金资助项目(KF1309)工程科学学报，第 38 卷，第 1 期: 34--40，2016 年 1 月 Chinese Journal of Engineering，Vol． 38，No． 1: 34--40，January 2016 DOI: 10． 13374 /j． issn2095--9389． 2016． 01． 005; http: / /journals． ustb． edu． cn 钢中非金属夹杂物形态对其去除行为的影响 王 敏1，2) ，郝 阳1，2) ，马铖佑1，2) ，王林静1，2) 1) 北京科技大学钢铁冶金新技术国家重点实验室，北京 100083 2) 北京科技大学冶金与生态工程学院，北京 100083  通信作者，E-mail: worldmind@ 163． com 摘 要 采用物理模拟手段研究球形、立方体、圆柱体、树枝状、团簇状等钢中常见形状夹杂物形状修正系数的差异性，并分 析粒子表面形貌和运动取向对形状修正系数的影响． 粒子的形状修正系数与阻力系数满足线性正相关，可以用形状修正系 数评价粒子的上浮去除能力; 在体积相同情况下，同类型夹杂物粒子的去除能力依次为树枝状( 垂直) ＜ 粗糙球形 ＜ 立方体 ＜ 圆柱( 半经 6 mm) ＜ 圆柱( 半经 4 mm) ＜ 树枝状( 水平) ＜ 团簇状( 水平) ＜ 光滑球形; 粗糙表面的球形其表面积约为光滑球形 的 2 倍，其形状修正系数同时增加 2. 1 倍． 简单粒子的形状修正系数受运动取向影响较小，复杂粒子则受运动取向影响较大， 树枝状颗粒垂直上浮时的形状修正系数约为水平上浮时的 2 倍． 关键词 炼钢; 非金属夹杂物; 形态; 夹杂物去除; 模拟实验 分类号 TF703. 5 + 4 Effect of the morphologies of non-metallic inclusions on their removal behavior WANG Min1，2)  ，HAO Yang1，2) ，MA Cheng-you1，2) ，WANG Lin-jing1，2) 1) State Key Laboratory of Advanced Metallurgy，University of Science and Technology Beijing，Beijing 100083，China 2) School of Metallurgical and Ecological Engineering，University of Science and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: worldmind@ 163． com ABSTＲACT The differences in shape correction coefficient ( SCC) of common inclusions in molten steel including spherical，cubic， cylindrical，dendritic and cluster particles were studied by a physical simulation method． The effects of inclusion surface morphologies and movement orientation on the SCC were analyzed on the basis of simulation results． The SCC can be used to evaluate the inclusion removal ability because of a linear correlation relationship between the SCC and the resistance coefficient of inclusions． For inclusions with the same volume but different shapes，the removal ability increase in order as follows: dendritic particles with vertical floatation， spherical particles with coarse surfaces，cubic particles，cylindrical particles of 6 mm in radium，cylindrical particles of 4 mm in ra￾dium，dendritic particles with horizontal floatation，clusters，and spherical particles with smooth surfaces． When the surface area of spherical particles with coarse surfaces is approximately 2 times as large as that of spherical particles with smooth surfaces，the SCC of spherical particles with coarse surfaces increases by 2. 1 times compared with the smooth ones． For simple particles，movement orienta￾tion has just limited effect on the SCC，but it influences the SCC of complex particles greatly． The SCC of dendritic particles with verti￾cal floatation is about twice of that with horizontal floatation． KEY WOＲDS steelmaking; non-metallic inclusions; morphology; inclusion removal; simulation experiment 收稿日期: 2015--07--10 基金项目: 国家自然科学基金资助项目( 51404018) ; 中央高校基本科研业务费资助项目( FＲF--TP--14--125A2) ; 钢铁冶金新技术国家重点实验 室基金资助项目( KF13--09) 钢中非金属夹杂物的形态特征会影响钢液的洁净 度［1］，洁净钢要求钢中非金属夹杂物的形状、类型、尺 寸和分布达到不影响钢材使用性能的水平． 高品质钢 对夹杂物的控制要求则更高，如高品质轴承钢中全氧