Q235连铸钢坯宏观偏析研究  

Research on Macro-segregation of Continuous Cast Q235 Steel Slab

作　　者：肖步庆 杨海滨 吴耀光 XIAO Buqing;YANG Haibin;WU Yaoguang(The First Steel Plant,Handan Branch of Hegang Co.,Ltd.,Handan 056015,China;Metallurgical Engineering Consulting and Design Division,MCC Capital Engineering and Research Incorporation Limited,Beijing 100176,China)

机构地区：[1]河钢股份有限公司邯郸分公司一炼钢厂,河北邯郸056015 [2]中冶京诚工程技术有限公司冶金工程咨询设计部,北京100176

出　　处：《铸造技术》2021年第12期1080-1085,共6页Foundry Technology

摘　　要：采用酸浸蚀观察低倍组织,原位检测、统计分析等法研究了Q235钢连铸坯的成分偏析。结果表明,连铸钢坯存在鼓肚,角部凹陷等外观缺陷,部分内部存在裂纹问题,铸坯中心偏析严重,C元素在铸坯中心富集,属于正偏析;在铸坯中心Si、Mn、P和S含量低,存在严重负偏析。The composition segregation of Q235 steel continuous casting billet was studied by acid etching, observing the macrostructure, in-situ detection and statistical analysis. The results show that the continuous casting slab has defects such as bulge and corner depression, some internal cracks, serious segregation. C is enriched in the center but Si, Mn, P and S are segregated negatively in the center of slab.

关 键 词：Q235 偏析 低倍酸洗法 宏观分析 原位分析法 

分 类 号：TF777[冶金工程—钢铁冶金]