改善含铝钢可浇性的应用研究
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- 英文论文题名：Applied Study to Improve the Castability of Aluminued Steel
- 论文作者：杨俊 ; 汤伟 ; 陈波涛 ; 杨勇
- 英文论文作者：YANG Jun ; TANG Wei ; CHEN Bo-tao ; YANG Yong ; Technology Department ; Hunan Valin Xiangtan Iron and Steel Co. ; Ltd
- 年：2016
- 作者机构：湖南华菱湘潭钢铁有限公司技术质量部;
- 论文关键词：水口结瘤 ; 夹杂物 ; 铝脱氧 ; 三元相图
- 英文论文关键词：nozzle clogging ; inclusion ; aluminum killed ; ternary phase diagram
- 会议召开时间：2016-12-02
- 会议录名称：第八届中国金属学会青年学术年会论文集
- 语种：中文
- 分类号：TF775
- 学会代码：ZGJS
- 会议名称：第八届中国金属学会青年学术年会
- 会议地点：中国辽宁沈阳
- 主办单位：中国金属学会
- 学会名称：中国金属学会
- 页数：8
- 文件大小：4146k
- 原文格式：O
- 会议级别：全国
摘要
通过对湘钢含铝钢中包水口结瘤物的分析发现,高熔点的CaO·MgO·Al_2O_3和CaO·CaS·Al_2O_3等两类复合夹杂是引起水口结瘤的主要原因。针对水口结瘤的原因,采用合适的造渣、脱氧工艺得到高碱度、高Al_2O_3、强还原性的精炼炉渣,使铝脱氧夹杂物实现Al_2O_3→MgO·Al_2O_3→CaO·MgO·Al_2O_3的转变,生成较低熔点的CaO·MgO·Al_2O_3复合夹杂,改善了钢水的可浇性,降低了生产成本。
The analysis to clogging materials of tundish nozzle of Xiang-steel found that the main reasons for the nozzle clogging is the two kinds of high melting point compound inclusions,such as CaO · MgO · Al_2O_3 and CaO · CaS · Al_2O_3.In order to resolve the nozzle clogging,the aluminum deoxidizing inclusions realize the change of Al_2O_3—>MgO · Al_2O_3→CaO · MgO · Al_2O_3 and gets the lower melting point compound inclusions as CaO · MgO · Al_2O_3 by adopting suitable slagging process and deoxidization process to obtain high basicity,high Al_2O_3 and strong reducibility of refining slag.The experimental technology not only improves the castability of steel but also reduces the manufacturing cost.
The analysis to clogging materials of tundish nozzle of Xiang-steel found that the main reasons for the nozzle clogging is the two kinds of high melting point compound inclusions,such as CaO · MgO · Al_2O_3 and CaO · CaS · Al_2O_3.In order to resolve the nozzle clogging,the aluminum deoxidizing inclusions realize the change of Al_2O_3—>MgO · Al_2O_3→CaO · MgO · Al_2O_3 and gets the lower melting point compound inclusions as CaO · MgO · Al_2O_3 by adopting suitable slagging process and deoxidization process to obtain high basicity,high Al_2O_3 and strong reducibility of refining slag.The experimental technology not only improves the castability of steel but also reduces the manufacturing cost.
引文
[1]Takata R,YANG Jian,Kuwabara M.Characteristics of Inclusions Generated During Al-Mg Complex Deoxidation of Molten Steel[J].ISIJ International.,2007,47(10):1379.
[2]Choudhary S K,Ghosh A.Thermodynamic Evaluation of Formation of Oxide-Sulfide Duplex Inclusions in Steel[J].ISIJ International,2008,48(11):1552.
[3]杨俊,王新华,王万军,等.超低氧车轮钢精炼过程非金属夹杂物的转变[J].北京科技大学学报,2010,32(7):860.
[4]Hideki Ono,Keiji Nakajima,Ryota Maruo et al.Formation Conditions of Mg_2TiO_4 and MgAl_2O_4 in Ti-Mg-Al Complex Deoxidation of Molten Iron[J].ISIJ International,2009,49(7):957.
[5]刘学华,韩传基,蔡开科,等.小方坯连铸低碳低硅铝镇静钢可浇性研究[J].北京科技大学学报,2005,27(4):431.
[6]Yuan F M,Wang X H,Zhang J M.Online forecasting model of tundish nozzle clogging[J].Journal of University of Science and Technology Beijing,2006,13(1):21.
[7]YANG Jun,WANG Xin-hua,JIANG Min,WANG Wan-jun.Effect of Calcium Treatment on Non-Metallic Inclusions in Ultra-Low Oxygen Steel Refined by High Basicity High Al_2O_3 Slag[J].Joural of Iron and Steel Research,International.2011,18(7):8.
[8]Ye G,J(o|¨)nsson P,Lund T.Thermodynamics and Kinetics of the Modification of Al_2O_3 Inclusions[J].ISIJ International,1996,36(Supplement):S105.
[9]杨俊,王新华.超低氧冶炼过程镁铝尖晶石形成的热力学分析与控制[J].钢铁,2011,46(7):26.
[10]WANG Xin-hua,WANG Wan-jun.LI Hai-bo,et al.Composition Change of the Non-Metallic Inclusions During the Secondary Refining of Low Oxygen Alloyed Structural Steels[C]//Asia Steel 2009 International Conference,Busan,Korea:[s.n.],2009:24.
[2]Choudhary S K,Ghosh A.Thermodynamic Evaluation of Formation of Oxide-Sulfide Duplex Inclusions in Steel[J].ISIJ International,2008,48(11):1552.
[3]杨俊,王新华,王万军,等.超低氧车轮钢精炼过程非金属夹杂物的转变[J].北京科技大学学报,2010,32(7):860.
[4]Hideki Ono,Keiji Nakajima,Ryota Maruo et al.Formation Conditions of Mg_2TiO_4 and MgAl_2O_4 in Ti-Mg-Al Complex Deoxidation of Molten Iron[J].ISIJ International,2009,49(7):957.
[5]刘学华,韩传基,蔡开科,等.小方坯连铸低碳低硅铝镇静钢可浇性研究[J].北京科技大学学报,2005,27(4):431.
[6]Yuan F M,Wang X H,Zhang J M.Online forecasting model of tundish nozzle clogging[J].Journal of University of Science and Technology Beijing,2006,13(1):21.
[7]YANG Jun,WANG Xin-hua,JIANG Min,WANG Wan-jun.Effect of Calcium Treatment on Non-Metallic Inclusions in Ultra-Low Oxygen Steel Refined by High Basicity High Al_2O_3 Slag[J].Joural of Iron and Steel Research,International.2011,18(7):8.
[8]Ye G,J(o|¨)nsson P,Lund T.Thermodynamics and Kinetics of the Modification of Al_2O_3 Inclusions[J].ISIJ International,1996,36(Supplement):S105.
[9]杨俊,王新华.超低氧冶炼过程镁铝尖晶石形成的热力学分析与控制[J].钢铁,2011,46(7):26.
[10]WANG Xin-hua,WANG Wan-jun.LI Hai-bo,et al.Composition Change of the Non-Metallic Inclusions During the Secondary Refining of Low Oxygen Alloyed Structural Steels[C]//Asia Steel 2009 International Conference,Busan,Korea:[s.n.],2009:24.