Q345B宽带钢边部裂纹分析  

Analysis of Edge Cracks in Q345B Wide Strip Steel

作　　者：郝少锋 梁辉 季春生 

机构地区：[1]品质保证部

出　　处：《莱钢科技》2008年第6期39-40,共2页Laigang Science & Technology

摘　　要：通过对Q345B裂边宽带钢化学成分、机械性能、金相组织、夹杂物的检验分析,发现是由于铸坯存在原始裂纹,轧制中大量夹杂物及过高锰含量导致裂纹的进一步扩展,最终形成裂边。Through an analysis of chemical compositions, mechanical properties, metallographic structures, inclusions of Q345B wide strip steel,it was found that original cracks exist in casting blank and that while rolling,a great amount of inclusions and too high content of manganese lead to the further expansion of them, ultimately to form burst edges.

关 键 词：宽带钢 Q345B 裂边 

分 类 号：TG333.71[金属学及工艺—金属压力加工] TM621.2[电气工程—电力系统及自动化]