摘要
对Q235B出现钢板表面出现平行于轧制方向的裂纹缺陷进行取样分析，结果表明表面缺陷的主要原因为铸坯上存在气泡在轧制过程中未能得到焊合所引起。
In this paper, the surface defects, which appear as cracks parallel the rolling direction of Q23B hot plate, were analyzed. The results shows： this type of defect is caused by the bubbles in billets which are not welded by rolling process.
关键词
Q235
表面缺陷
气泡
显微分析
Q235
surface defect
bubble
micrographic analysis
