钢轨A类非金属夹杂的析出分析研究
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- 英文论文题名：Analysis And Research On The Segregation of A-type Inclusion In Rail Steel
- 论文作者：李红光 ; 陈天明 ; 陈亮 ; 郭奠荣
- 英文论文作者：Li Hongguang ; Chen Tianming ; Chen Liang ; Guo Dianrong ; Panggang Group research institute Co. ; Ltd. ; State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization ; Pangang group steel vanadium and titanium co. ; Ltd.
- 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;攀钢集团提钒炼钢厂;
- 论文关键词：钢轨 ; A类非金属夹杂 ; MnS ; 热力学 ; 夹杂变性
- 英文论文关键词：rail ; type A non-metallic inclusion ; MnS ; thermodynamics ; inclusion-modification treatment
- 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：TF771.2
- 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：1236k
- 原文格式：O
- 会议级别：全国
摘要
通过对钢轨A类非金属夹杂进行不同深度、不同位置的取样检测,得出钢轨A类非金属夹杂检测具有一定偶然性。以U75V为例进一步采用Factsage热力学数值模拟及析出热力学理论对MnS非金属夹杂的析出过程进行了分析;结合连铸过程钢液冷却凝固特性及实际统计、检测结果对MnS非金属夹杂的析出分析进行验证,最终得出MnS析出于钢液近乎完全凝固,且主要由于S、Mn偏析形成微区高溶质浓度而析出。通过降低钢液氧、氮含量为条件,降低钢液硫含量、夹杂变性处理及铸坯内部质量优化可以抑制MnS非金属夹杂的析出及轧制形变。
Making tests for the type-A non-metallic inclusion of rails with difference depths below tread or at difference position along the rolling direction,found that contingency is exists in difference degree for the testing results.Set U75 V as researching example to calculate by Factsage software and make thermodynamic calculation for the separation of MnS in rail steel,combine the solidification characteristic of molten steel in the casting process with results of produce statistics and actual testing to verify the analyzed conclusion.And final concluded MnS separated mainly caused by segregation of S and Mn while molten steel solidifying and separate at the moment while solidified almost complete.Found measures to control the separation and deformation in the process of rolling to be rail,decreasing the content of[S]%and try to make modification for MnS with Ca or Ti based on the control of decreasing the content of[0]%、[N]%,and improve the quality of billets to control segregation、porosity and solidifying structure are also very helpful.
Making tests for the type-A non-metallic inclusion of rails with difference depths below tread or at difference position along the rolling direction,found that contingency is exists in difference degree for the testing results.Set U75 V as researching example to calculate by Factsage software and make thermodynamic calculation for the separation of MnS in rail steel,combine the solidification characteristic of molten steel in the casting process with results of produce statistics and actual testing to verify the analyzed conclusion.And final concluded MnS separated mainly caused by segregation of S and Mn while molten steel solidifying and separate at the moment while solidified almost complete.Found measures to control the separation and deformation in the process of rolling to be rail,decreasing the content of[S]%and try to make modification for MnS with Ca or Ti based on the control of decreasing the content of[0]%、[N]%,and improve the quality of billets to control segregation、porosity and solidifying structure are also very helpful.
引文
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[8]吴晓东,郭登仰,谈盛康,等.20CrMo齿轮钢钙处理对夹杂物变性效果分析[J].热加工工艺,2012,41(23):22.
[9]吴伟,刘浏,李峻.重轨钢无铝脱氧工艺的研究[J].钢铁,2007,42(3):33-36.
[10]齐江华,彭著钢,吴杰,等.加钛处理控制重轨钢中MnS夹杂的分析探讨[J].武汉工程职业技术学报,2014,2(4):1-4.
[11]闵义,刘承军,王德永,等.37Mn5连铸圆坯中心等轴晶率预测[J].钢铁研究学报,2011,23(10):41-42.
[2]李春龙,智建国,陈建军,等.包钢高速铁路重轨钢生产工艺及质量水平[C]//全国炼钢-连铸生产技术会议,2008.
[3]任学冲,褚武扬,李金许,等.MnS夹杂对钢中氢扩散行为的影响[J].北京科技大学学报,2007,2:232-236.
[3]单麟天.重轨钢中的夹杂物与脱氧制度[J].钢铁,1997,32(5):82.
[4]王权,李智丽,韩风英.重轨轨腰纵裂纹研究[J].包钢科技,2003,29(4):67.
[5]殷光虹,施青,孙元宁.管线用钢氢致裂纹(HIC)影响因素分析[J].钢管,2004,33(6):20-23.
[6]黄希祜.钢铁冶金原理[M].北京:冶金工业出版社,1990:55.
[7]齐江华,吴杰,索进平,等.百米高速重轨钢中MnS夹杂研究[C]//第14届全国钢质量与非金属夹杂物控制学术会议,广西桂林:2010:110-111.
[8]吴晓东,郭登仰,谈盛康,等.20CrMo齿轮钢钙处理对夹杂物变性效果分析[J].热加工工艺,2012,41(23):22.
[9]吴伟,刘浏,李峻.重轨钢无铝脱氧工艺的研究[J].钢铁,2007,42(3):33-36.
[10]齐江华,彭著钢,吴杰,等.加钛处理控制重轨钢中MnS夹杂的分析探讨[J].武汉工程职业技术学报,2014,2(4):1-4.
[11]闵义,刘承军,王德永,等.37Mn5连铸圆坯中心等轴晶率预测[J].钢铁研究学报,2011,23(10):41-42.