IF钢连铸坯夹杂物示踪试验研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Study on Inclusion Tracer Test of IF Steel Continuous Casting Billets 作者：张仕骏 ; 凌友峰 ; 刘增勋 ; 肖鹏程 ; 王泽鹏 ; 毛学 英文作者：ZHANG Shijun;LING Youfeng;LIU Zengxun;XIAO Pengcheng;WANG Zepeng;MAO Xue;School of Metallurgy & Energy,North China University of Science and Technology;Hebei High Quality Steel Continuous Casting Engineering Technology Research Center;Zhonggang Shijiazhuang Engineering Design Institute Co.,Ltd.; 关键词：IF钢 ; 连铸坯 ; 大型夹杂物 英文关键词：IF steel;;continuous casting billets;;large inclusions 中文刊名：ZZJS 英文刊名：Foundry Technology 机构：华北理工大学冶金与能源学院;河北省高品质钢连铸工程技术研究中心;中钢石家庄工程设计院有限公司; 出版日期：2018-07-18 出版单位：铸造技术 年：2018 期：v.39;No.316 语种：中文; 页：ZZJS201807042 页数：4 CN：07 ISSN：61-1134/TG 分类号：135-138

摘要

通过工业示踪试验,采用大样电解试验方法,利用扫描电镜及能谱分析,分析了IF钢铸坯中大型夹杂物的类型、数量、尺寸及来源。结果表明,铸坯大型夹杂物平均含量为28.6 mg/10 kg,波动范围为23.8~41.4 mg/10 kg。粒度大于300μm的大型夹杂物占总量的26.7%。大型夹杂物几乎全部含有示踪熔渣元素,其中含K、Na元素的结晶器保护渣特征的夹杂物约占正常坯总量的60%,含La元素的钢包渣特征的夹杂物约占正常坯总量的30%。此外,还有小部分夹杂物来自脱氧产物聚集、中间包渣及耐火材料。
        The type,quantity,size and source of inclusion defects in the IF steel slab were analyzed by the industrial tracer test,method of large samples electrolytic,scanning electron microscopy and energy spectrum analysis.The results show that the average content of large inclusions in the cast billets is 28.6 mg/10 kg,and the fluctuation range is from 23.8 mg/10 kg to 41.4 mg/10 kg.Large inclusions with a grain size of more than 300 μm accounted for 26.7% of the total.Large inclusions almost contain tracer slag elements.The inclusions with mold inclusions containing K and Na elements account for about 60% of the total billets,and the inclusions with steel slag containing La elements account for about 30%of the total slab.In addition,there are a few inclusions from the aggregation of deoxidized products,intermediate slag and refractory materials.

引文

[1]Tsai H T,Sammon W J,Hazelton D E.Characterization and countermeasure for sliver defects in cold rolled products[C]//Steelmaking Conference Proceedings.Detroit:[publisher not quite clear],1990,73:49-59.
    [2]Tripathy P K,Das S,Jha M K,et al.Migration of slab defects during hot rolling[J].Iron making and Steel making,2006,33:477-484.
    [3]Sahai Y,Emi T.Tundishi technology for clean steelproduction[M].Singapore:World Scientific Publishing Company,2008.
    [4]唐萍,李玉林,贾成橙,等.IF钢铸坯表层大型夹杂物分布及来源研究[J].炼钢,2016,32(4):73-78.
    [5]刘增勋,李萌,朱立光,等.汽车用板IF钢开浇炉次板坯洁净度的分析[J].炼钢,2017,33(2):74-78.
    [6]裴凤娟,陈伟庆,候成,等.CAS-OB精炼和连铸过程钢中夹杂物来源示踪研究[J].中国冶金,2007(7):47-50,57.
    [7]孙立根,任英强,刘阳,等.Q235方坯非金属夹杂物行为研究[J].钢铁钒钛,2015(1):85-91.