IF钢铸坯厚度方向洁净度及夹杂物分布规律的量化研究
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- 英文论文题名：The Quantitative Research on Cleanlines and Inclusions Distribution of IF Steel Slabs in the Thickness Direction
- 论文作者：马晓涛 ; 吴国荣 ; 杨星地
- 英文论文作者：Ma Xiaotao ; Wu Guorong ; Yang Xingdi ; panGang Group Research Institute Co.Ltd. ; State Key Laboratory for Comprehensive Utilization of Vanadium and Titanium Resources
- 年：2016
- 作者机构：攀钢集团研究院有限公司钒钛资源综合利用国家重点实验室;
- 论文关键词：IF钢 ; 板坯 ; 非金属夹杂物 ; 洁净度 ; 分布
- 英文论文关键词：IF steel ; slabs ; non-metallic inclusion ; cleanliness ; distribution
- 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：TF777
- 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：5
- 文件大小：1368k
- 原文格式：O
- 会议级别：全国
摘要
利用Aspex Explorer型扫描电镜、氧氮分析等手段系统的分析了IF钢连铸坯厚度方向的洁净度变化以及夹杂物分布规律。铸坯厚度方向T[O]和N的质量分数在铸坯厚度1/5~1/4处达到峰值,高于平均值5%~15%;内弧1/4至外弧1/4区域内铸坯T[O]稳定且较低,铸坯洁净度较好。铸坯中非金属夹杂物的数量分布和铸坯T[O]含量有很好的对应关系;在距铸坯内外弧表层70~80 mm左右出现夹杂数聚集带,此处夹杂物含量明显高于其他部位;各类夹杂物均以小粒径夹杂物为主,95%以上的夹杂<20μm,仅检测到一处大于50μm的夹杂,初步断定应为保护渣卷渣造成的夹杂。
In this paper cleanlines and inclusions distribution of IF steel slabs in the thickness direction was quantitative analysed using ASPEX and oxygen and nitrogen analysis.The mass fraction of total oxygen and N in the slabs reach peak in the area between 1/5 thickness and 1/4 thickness,and it is 5%to 15%higher than the average values.The mass fraction of total oxygen and N is Stable and low in the area between 1/4 thickness from the inner arc and 1/4 thickness from the outer arc,moreover cleanlines of IF steel slabs is better.The total oxygen content has good positive relationship with the amount of inclusions,there is an inclusion accumulation zone around 70 mm-80 mm away from the inner and outer arc surface where the inclusion content is much higher than those in other positions.Small particle inclusions are the main and with the particle size smaller than 20μm account for 95%.There is only one place with the particle size larger than 50μm,andpreliminary determination is that it maybe entrapped mold powder.
In this paper cleanlines and inclusions distribution of IF steel slabs in the thickness direction was quantitative analysed using ASPEX and oxygen and nitrogen analysis.The mass fraction of total oxygen and N in the slabs reach peak in the area between 1/5 thickness and 1/4 thickness,and it is 5%to 15%higher than the average values.The mass fraction of total oxygen and N is Stable and low in the area between 1/4 thickness from the inner arc and 1/4 thickness from the outer arc,moreover cleanlines of IF steel slabs is better.The total oxygen content has good positive relationship with the amount of inclusions,there is an inclusion accumulation zone around 70 mm-80 mm away from the inner and outer arc surface where the inclusion content is much higher than those in other positions.Small particle inclusions are the main and with the particle size smaller than 20μm account for 95%.There is only one place with the particle size larger than 50μm,andpreliminary determination is that it maybe entrapped mold powder.
引文
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[8]沈昶,舒宏富,赵沛,等.超低碳钢板坯夹杂物的量化分析[J].炼钢,2014,6:014.
[2]郭小龙,郑之旺,孙力军.超深冲IF钢的生产技术与发展概况[J].上海金属,2008(1):39-43.
[3]Bate P S,da Fonseca J Q.Texture development in the cold rolling of IF steel[J].Materials Science and Engineering:A,2004,380(1):365-377.
[4]王新华.采用薄板坯连铸生产高表面质量冷轧钢板的可行性分析[J].钢铁。2005,39(12):18-25.
[5]李光瀛,周积智.高等级汽车板的开发与应用[J].钢铁研究学报,2012,24(1):1-1.
[6]任子平.IF钢中成分及夹杂物的过程控制研究[D].沈阳:东北大学,2006.
[7]阿姆,项锦云.威尔顿钢铁公司提高钢清洁度的中间包技术[J].武钢技术,1996,34(8):37-41.
[8]沈昶,舒宏富,赵沛,等.超低碳钢板坯夹杂物的量化分析[J].炼钢,2014,6:014.
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