转炉钢水罐车钢轨纵向开裂失效机理研究
龙剑群1，陈贤波2，张业建2，江向栋2，郑同六1，林汝华1
（1.宝钢湛江钢铁有限公司，广东 湛江 524072；2.宝山钢铁股份有限公司，上海 宝山 201900）
摘要：针对宝钢湛江钢铁炼钢厂转炉炉下钢水罐车走行钢轨纵向开裂故障，通过对炼钢冶炼工艺特性、转炉炉下实际工况、炉底设备防渣能力进行勘察，对钢轨实际工作温度、断裂钢轨电镜扫描以及金相组织进行检测分析，得出了高温是引起钢轨组织变化，造成钢轨纵向开裂故障的主要原因，提出了相应的对策措施，对于新建项目和技术改造创新具有一定参考意义。
关键词：钢轨开裂；高温；金相分析；钢水罐车
中图分类号：TF341.4；TF748+.06 文献标志码：A doi：10.3969/j.issn.1006-0316.2017.05.023
文章编号：1006－0316 (2017) 05－0077－04
The Failure Mechanism Research on Rail Longitudinal Cracking under Converter Ladle Car
LONG Jianqun1，CHEN Xianbo2，ZHANG Yejian2，JIANG Xiangdong2，ZHENG Tongliu1，LIN Ruhua1
( 1.Baosteel Zhanjiang Iron & Steel Co., Ltd., Zhanjiang 524072, China; 2.Baoshan Iron & Steel Co., Ltd., Shanghai 201900, China )
Abstract：Aiming at the failure which caused rail longitudinal cracking under converter ladle car in Baosteel Zhanjiang Iron & Steel Co., Ltd., this thesis studied the cause of failure from several aspects. Through the survey and analysis of steelmaking process, working condition and the ability of slag baffle under converter, rail actual temperature, SEM and metallograph experiment on cracking rail, this thesis came to the conclusion that the high temperature was the primary cause of the rail organizational change and longitudinal cracking. In order to solve this problem, this thesis put forward some corresponding countermeasures. This may provide certain reference meanings to new project and technical innovation project.
Key words：rail cracking；elevated temperature；metallographic analysis；ladle car
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收稿日期：2016－11－16
作者简介：龙剑群（1991－），男，江西鹰潭人，硕士，冶炼机械高级业务，主要从事炼钢机械与起重设备故障分析研究工作。
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