摘要
从力学角度对铸坯表面纵裂纹的形成机理进行了探讨,结合首钢京唐联合有限责任公司板坯连铸的生产实践,分析了结晶器热像图在预测及控制板坯裂纹中的应用效果。通过对现场漏钢数据的分析阐明了裂纹的扩展机理,并且在结晶器内出现裂纹时,热像图上都可以看到小幅的温降现象;简要阐述了纵裂纹的出现总是伴随着纵向凹陷现象。
In this paper, the formation mechanism of the starting slab surface longitudinal cracks were discussed from a mechanical point of view. Combined with Shougang Jingtang United Iron ; Steel Co. , Ltd. slab production practices, the apply effects of mold thermal images in predicting and controlling cracks in the slab were analyzed. Through the analysis of the field data, the breakout crack propagation mechanism was illustrated. When cracks in the mold, the heat can be seen on the map as a slight temperature drop phenomenon, and the emergence of vertical cracks always with longitudinal depression was briefly described.
出处
《炼钢》
CAS
北大核心
2014年第4期47-51,共5页
Steelmaking
基金
北京市科委项目(Z101103004310005)
关键词
连铸
结晶器
坯壳断裂
纵裂
continuous casting
mould
shell rupture
longitudinal crack
