摘要
针对唐山中厚板材有限公司板坯常发生的内部裂纹问题,上线应用了中冶连铸技术工程股份有限公司的三维动态配水和铸坯质量跟踪与判定系统(QES),系统正常运行后,铸坯内部裂纹有了明显改善。基于QES分析了生产过程、钢水成分和设备运行状况对中间裂纹的影响,发现钢水硫含量高、w(Mn)/w(S)低、扇形段开口度控制偏差和冷却水喷嘴堵塞是导致该厂中间裂纹的主要原因,最终提出改进措施,改进后中间裂纹发生率明显减少。
Aim at the situation that the inner cracks usually appeared in slab of Tangshan Medium Thickness Plate Co., Ltd., three-dimensional dynamic cooling system and QES that CCTEC developed were applied online. The slab quality was improved signifi- cantly after these two systems ran in normal operation. Based on QES, the impact of production process, composition of molten steel and equipments running status on inter- mediate cracks were analyzed in the paper. The results showed the main reasons of cau- sing middle cracks were higher content of sulfur, lower ratio of w（Mn）/w（S）, the vari- ation of roll gap and the nozzle clogging as well. Finally, the incidence of intermediate carcks on slab decreased obviously after raising and using the improvement measures.
出处
《炼钢》
CAS
北大核心
2013年第3期14-18,共5页
Steelmaking
