钢板边部裂纹缺陷形成机理分析

摘要

铸坯火焰切角轧制后钢板出现严重的边部裂纹，对钢板边部裂纹和铸坯低倍试样进行了分析，发现低倍试样切割面存在密集的裂纹，进一步研究发现这是由于火焰切割造成的，进而推断出，铸坯火焰切角导致钢板边部严重裂纹。%After cutting the edge of slab by flame, cracks occur on the edge of corresponding steel plates. And the research of slab sample shows that there are serried cracks on the flame cutting section. Further research shows it is due to the flame cutting that form the edge cracks. So it is concluded that the flame cutting on the slab edges resulted the cracks on the edge of plates.