基于多相凝固模型的钢锭模锭型优化设计  

Optimization design of steel ingot mould based on multiphase solidification mode

作　　者：宋毓旦 刘钦 刘士瑞 杨震 关锐[1] 艾新港[1] 李胜利[1] SONG Yudan;LIU Qin;LIU Shirui;YANG Zhen;GUAN Rui;AI Xingang;LI Shengli(School of Materials and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,Liaoning,China;POSCO(Zhangjiagang)Stainless Steel Co.,Ltd.,Zhangjiagang 215621,Jiangsu,China)

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114051 [2]浦项(张家港)不锈钢股份有限公司,江苏张家港215621

出　　处：《连铸》2025年第1期56-63,共8页Continuous Casting

基　　金：辽宁省创新联合体重大专项资助项目(2023JH1/11200012);国家自然科学基金资助项目(52304352);辽宁省高校基本科研业务费资助项目(LJ202410146038,LJ232410146036,LJ222410146022);辽宁省科技厅博士科研启动基金计划资助项目(2023-BS-182)。

摘　　要：目前,模铸在生产特殊钢、大单重、小批量铸件时有明显优势。然而,模铸钢锭普遍具有内部缺陷较多、成材率较低和锭模损耗较大等缺点,如何优化锭型结构成为了提升钢锭内部质量的根本手段。基于多相凝固模型,以5 t方锭为研究对象,重点研究了不同冒容比、缓冷工艺和强冷工艺对钢锭宏观偏析行为的影响。结果表明,增大冒容比或采用强冷工艺对改善宏观偏析有明显效果,而缓冷工艺效果不佳,对于该锭型,冒容比增加至11.5%以上可控制头部正偏析处于冒口线以上。能够为设计人员节约锭型设计时间,同时为现场实际生产提供数据参考。At present,ingot casting has obvious advantages in producing special steel,manufacturing large-weight ingots and making small-lot castings.However,steel ingots generally have many internal defects,low yield,and high mold loss.How to optimize the ingot structure has become the fundamental method to improve the internal quality of steel ingots.Based on the multiphase solidification model,it took a 5tcubic ingot as the research object and focuses on the effects of different feeding efficiency ratios,slow cooling process and strong cooling process on the macro segregation behavior of steel ingots.The results showed that increasing the rising capacity ratio or using the strong cooling process has a significant effect on improving the macroscopic segregation,while the slow cooling process has little effect.For this ingot,increasing the rising capacity ratio to more than 11.5%can restrain the positive segregation of the head above the riser line.It can save the design time of the ingot pattern for the designer and at the same time provide a data reference for the actual production on site.

关 键 词：钢锭 多相凝固模型 锭型设计 宏观偏析 成材率 

分 类 号：TG2[金属学及工艺—铸造]