二次冷却对板坯中间裂纹的影响  

The Effect of Second Cooling System on Intermediate Cracks of Slab

作　　者：李超[1] 赵国生[2] 付亮[3] 高占晓 方觉[1] 

机构地区：[1]河北理工大学冶金与能源学院,河北唐山063009 [2]唐山不锈钢股份有限公司,河北唐山063009 [3]首钢迁安钢铁有限责任公司,河北唐山063009

出　　处：《河北理工大学学报（自然科学版）》2008年第2期4-8,共5页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：目前,如何在保证铸坯质量的前提下提高内部质量,特别是防止影响最终产品轧制性能的严重中间裂纹的出现,是转炉一连铸治金工艺路线存在地普遍问题。结合连铸板坯凝固过程的二冷DYNACS冷却模型模拟计算,阐述了二次冷却对铸坯中间裂纹的影响,并在此基础上提出了解决方案。Nowadays,how to improve slab internal quality,especially to avoid the apearance of serious intermediate cracks that affect the final rolling performances under condition of guaranteeing its surface quality, is a general problem in the metallurgical process of converter -- continuous casting. From simulation calculation results and actual measurement data of solidification thickness with second cooling model DYNACS in shot tack test, the effects of seeond cooling for intermediate cracks of stab is important, and the preventive measures are proposed.

关 键 词：二次冷却 连铸板坯 中间裂纹 

分 类 号：TF777.1[冶金工程—钢铁冶金]