炼钢连铸过程中铸坯裂纹形成机理及防控技术研究  

Research on the Mechanism of Cast Billet Crack Formation and Preventive Technology in Steelmaking Continuous Casting Process

作　　者：王雄文 WANG Xiong-wen(Nanjing Iron&Steel Co.,Ltd.Nanjing 210035,China)

机构地区：[1]南京钢铁股份有限公司,江苏南京210035

出　　处：《全面腐蚀控制》2025年第3期58-60,共3页Total Corrosion Control

摘　　要：本文探讨裂纹形成机理,包括凝固热应力、钢水成分、工艺参数及凝固组织的作用,并提出防控措施:优化钢水成分、调整连铸参数、控制凝固过程、优化二次冷却设计。研究表明,通过合理工艺优化,可有效降低裂纹发生率,提升铸坯质量与连铸工艺的稳定性及生产效率。This paper explores the mechanisms of crack formation,including the effects of solidification thermal stress,steel composition,process parameters,and solidification microstructure,and proposes preventive measures:optimizing steel composition,adjusting continuous casting parameters,controlling the solidification process,and optimizing secondary cooling design.The study shows that through reasonable process optimization,the crack occurrence rate can be effectively reduced,improving the quality of cast billets,the stability of the continuous casting process,and production efficiency.

关 键 词：炼钢连铸 铸坯裂纹 热应力 工艺优化 防控技术 

分 类 号：TF777[冶金工程—钢铁冶金]