抗疲劳应力钢中的夹杂物控制
|
摘要
为了有效控制抗疲劳应力钢中夹杂物危害,通过对钢中典型有害夹杂物进行分析,从脱氧工艺、精炼渣系、钙处理工艺、软吹工艺和连铸保护浇铸等方面进行了优化改进,并取得相应效果。实现了钢中夹杂物有效控制,钢中夹杂物形状主要以小尺寸球状和块状为主,夹杂物成分主要以钙铝酸盐和MnS复合夹杂物为主,夹杂物尺寸控制在20μm以内,其中90%以上夹杂物都控制在7μm以内。
In order to effectively control the inclusion damage in steel with anti-fatigue stress,through the theoretical analysis of the typical harmful inclusions in the fatigue stress steel,some optimizations and improvements have been carried out from the aspects of deoxidation process,refining slag system,calcium treatment process,soft blowing process and casting protection in continuous casting etc,and the corresponding effects have been achieved. The effective control of inclusions in the steel is realized,the shape of inclusions is mainly small spherical and block-shaped,the inclusions are mainly composed of calcium aluminate and MnS composite inclusions,the inclusion size is controlled within 20 μm,of which more than 90% of the inclusions are controlled within 7 μm.
In order to effectively control the inclusion damage in steel with anti-fatigue stress,through the theoretical analysis of the typical harmful inclusions in the fatigue stress steel,some optimizations and improvements have been carried out from the aspects of deoxidation process,refining slag system,calcium treatment process,soft blowing process and casting protection in continuous casting etc,and the corresponding effects have been achieved. The effective control of inclusions in the steel is realized,the shape of inclusions is mainly small spherical and block-shaped,the inclusions are mainly composed of calcium aluminate and MnS composite inclusions,the inclusion size is controlled within 20 μm,of which more than 90% of the inclusions are controlled within 7 μm.
引文
[1]刘铁牛,杨文,张立峰,等.帘线钢轧制和拉拔过程中夹杂物变形能力的研究[J].炼钢,2018(2):25.(LIU Tie-niu,YANGWen,ZHANG Li-feng,et al.Investigation on the deformability of inclusions in tire cord steels during processes of hot-rolling and cold-drawing[J].Steelmaking,2018(2):25.)
[2]安杰,王哲,李润霞,等.汽车齿轮钢8620RH的洁净度[J].中国冶金,2016,26(9):33.(AN Jie,WANG Zhe,LI Run-xia,et al.Cleanliness of automobile gear steel 8620RH[J].China Metallurgy,2016,26(9):33.)
[3]CUI Huai-zhou,CHEN Wei-qing.Effect of boron on morphology of inclusions in tire cord steel[J].Journal of Iron and Steel Research International,2012,19(4):22.
[4]邓志银,周业连,朱苗勇.铝镇静钢中夹杂物形态对其去除的影响[J].钢铁,2018,53(1):34.(DENG Zhi-yin,ZHOU Yelian,ZHU Miao-yong.Effect of state of inclusions on removal in Al-killed liquid steel[J].Iron and Steel,2018,53(1):34.)
[5]周业连,邓志银,朱苗勇.钢-渣界面液态夹杂物分离过程数值模拟[J].钢铁,2018,53(7):31.(ZHOU Ye-lian,DENG Zhiyin,ZHU Miao-yong.Numerical simulation on separation process of liquid inclusion at steel-slag interface[J].Iron and Steel,2018,53(7):31.)
[6]黄宇,谢有,成国光,等.H13钢中Mg-Al-O系夹杂物的形成机理及控制[J].钢铁,2017,52(6):34.(HUANG Yu,XIE You,CHENG Guo-guang,et al.Formation mechanism and control of MgAl-O inclusions in H13 steel[J].Iron and Steel,2017,52(6):34.)
[7]邹明,徐荣嬛,李积鹏,等.Ti-IF钢非金属夹杂物形核热力学和演变机理[J].中国冶金,2017,27(7):12.(ZOU Ming,XURong-huan,LI Ji-peng,et al.Nucleation thermodynamic and evolution of non-metallic inclusions in Ti-IF steel[J].China Metallurgy,2017,27(7):12.)
[8]木村世意,王艳红.帘线钢中夹杂物的控制技术[J].鞍钢技术,2005(2):55.(Mucun Shiyi,WANG Yan-hong.Control technology of inclusions in cord steel[J].Angang Technology,2005(2):55)
[9]黄希祜.钢铁冶金原理[M].北京:冶金工业出版社,2005.(HUANG Xi-hu.Prisciples of Steel Metallurgy[M].Beijing:Metallurgical Industry Press,2005.)
[10]张鉴.炉外精炼的理论与实践[M].北京:冶金工业出版社,1999.(ZHANG jian.Theory and Practice of Ladle Refining[M].Beijing:Metallurgical Industry Press,1999.)
[11]王新华,陈斌,姜敏,等.渣--钢反应对高强度合金结构钢中生成较低熔点非金属夹杂物的影响[J].钢铁,2008,43(12):28.(WANG Xin-hua,CHEN Bin,JIANG Min,et al.Effect of slagmetal reaction on formation of non-metallic inclusions of lower melting temperature in high strength alloyed structural steel[J].Iron and Steel,2008,43(12):28.)
[12]姚同路,刘浏,李树庆,等.铝镇静钢夹杂物形态控制工艺研究[J].钢铁,2010,45(11):37.(YAO Tong-lu,LIU Liu,LIShu-qing,et al.Inclusions modality controlling of aluminiumkilled steel[J].Iron and Steel,2010,45(11):37.)
[13]林瑛,李勇,吴伟,等.转炉底吹气体对螺纹钢性能的影响[J].中国冶金,2016,26(1):13.(LIN Ying,LI Yong,WU Wei,et al.Effect of bottom-blowing gas on properties of twisted stee[J].China Metallurgy,2016,26(1):13.)
[14]贺道中,苏振江,周志勇.铝脱氧钢水钙处理热力学分析与应用[J].湖南工业大学学报,2010,24(3):5.(HE Dao-zhong,SU Zhen-jiang,ZHOU Zhi-yong.Thermodynamic analysis and application of calcium treatment on aluminium-killed steel[J].Journal of Hunan University of Technology,2010,24(3):5.)
[2]安杰,王哲,李润霞,等.汽车齿轮钢8620RH的洁净度[J].中国冶金,2016,26(9):33.(AN Jie,WANG Zhe,LI Run-xia,et al.Cleanliness of automobile gear steel 8620RH[J].China Metallurgy,2016,26(9):33.)
[3]CUI Huai-zhou,CHEN Wei-qing.Effect of boron on morphology of inclusions in tire cord steel[J].Journal of Iron and Steel Research International,2012,19(4):22.
[4]邓志银,周业连,朱苗勇.铝镇静钢中夹杂物形态对其去除的影响[J].钢铁,2018,53(1):34.(DENG Zhi-yin,ZHOU Yelian,ZHU Miao-yong.Effect of state of inclusions on removal in Al-killed liquid steel[J].Iron and Steel,2018,53(1):34.)
[5]周业连,邓志银,朱苗勇.钢-渣界面液态夹杂物分离过程数值模拟[J].钢铁,2018,53(7):31.(ZHOU Ye-lian,DENG Zhiyin,ZHU Miao-yong.Numerical simulation on separation process of liquid inclusion at steel-slag interface[J].Iron and Steel,2018,53(7):31.)
[6]黄宇,谢有,成国光,等.H13钢中Mg-Al-O系夹杂物的形成机理及控制[J].钢铁,2017,52(6):34.(HUANG Yu,XIE You,CHENG Guo-guang,et al.Formation mechanism and control of MgAl-O inclusions in H13 steel[J].Iron and Steel,2017,52(6):34.)
[7]邹明,徐荣嬛,李积鹏,等.Ti-IF钢非金属夹杂物形核热力学和演变机理[J].中国冶金,2017,27(7):12.(ZOU Ming,XURong-huan,LI Ji-peng,et al.Nucleation thermodynamic and evolution of non-metallic inclusions in Ti-IF steel[J].China Metallurgy,2017,27(7):12.)
[8]木村世意,王艳红.帘线钢中夹杂物的控制技术[J].鞍钢技术,2005(2):55.(Mucun Shiyi,WANG Yan-hong.Control technology of inclusions in cord steel[J].Angang Technology,2005(2):55)
[9]黄希祜.钢铁冶金原理[M].北京:冶金工业出版社,2005.(HUANG Xi-hu.Prisciples of Steel Metallurgy[M].Beijing:Metallurgical Industry Press,2005.)
[10]张鉴.炉外精炼的理论与实践[M].北京:冶金工业出版社,1999.(ZHANG jian.Theory and Practice of Ladle Refining[M].Beijing:Metallurgical Industry Press,1999.)
[11]王新华,陈斌,姜敏,等.渣--钢反应对高强度合金结构钢中生成较低熔点非金属夹杂物的影响[J].钢铁,2008,43(12):28.(WANG Xin-hua,CHEN Bin,JIANG Min,et al.Effect of slagmetal reaction on formation of non-metallic inclusions of lower melting temperature in high strength alloyed structural steel[J].Iron and Steel,2008,43(12):28.)
[12]姚同路,刘浏,李树庆,等.铝镇静钢夹杂物形态控制工艺研究[J].钢铁,2010,45(11):37.(YAO Tong-lu,LIU Liu,LIShu-qing,et al.Inclusions modality controlling of aluminiumkilled steel[J].Iron and Steel,2010,45(11):37.)
[13]林瑛,李勇,吴伟,等.转炉底吹气体对螺纹钢性能的影响[J].中国冶金,2016,26(1):13.(LIN Ying,LI Yong,WU Wei,et al.Effect of bottom-blowing gas on properties of twisted stee[J].China Metallurgy,2016,26(1):13.)
[14]贺道中,苏振江,周志勇.铝脱氧钢水钙处理热力学分析与应用[J].湖南工业大学学报,2010,24(3):5.(HE Dao-zhong,SU Zhen-jiang,ZHOU Zhi-yong.Thermodynamic analysis and application of calcium treatment on aluminium-killed steel[J].Journal of Hunan University of Technology,2010,24(3):5.)