中厚板边裂成因分析及控制措施  

Cause Analysis and Control Measures of Edge Crack on Medium Plate

作　　者：吴建宾[1] 黄大军[1] 李东晖[1] 代元[1] 段东明[1] 

机构地区：[1]武汉钢铁集团公司

出　　处：《宽厚板》2013年第5期36-40,共5页Wide and Heavy Plate

摘　　要：针对武钢中厚板轧制线改造后成品钢板宽边出现的边部裂纹缺陷问题,采用低倍观察、金相检测以及现场实验等方法进行了分析和研究。结果显示,裂纹在连铸板坯边部产生,并在后期的轧制过程中由于板坯不均匀变形而扩展形成。通过在轧制中采取有效的预防措施,减少了边裂对宽度的影响,提高了中厚板成材率。In order to determine the causes of edge cracks on finished plate after the revamp of WISCO medium plate rolling line, analysis and study have been carried out by means of macro - examination, metallographie examination and field experiment. The results show that the cracks formed on the edge of continuous cast slab and propagated due to non - uniform deformation of slab during subsequent rolling. After taking preventive measures in the process of rolling, the effect of edge crack on delivered width is reduced, and yield rme of medium plate is increased.

关 键 词：中厚板 边裂 板坯边部 轧制产生 

分 类 号：TG335.5[金属学及工艺—金属压力加工]