中板探伤缺陷的分析与研究  

ANALYSIS AND STUDY ON MEDIUM PLATE DEFECTION BY FLAW DETECTION

作　　者：吴巍[1] 翟俊[1] 谭清元[1] 于桂玲[1] 周远华 王鑫 熊银成 宋晓菊 

机构地区：[1]钢铁研究总院 [2]重庆钢铁股份有限公司

出　　处：《河南冶金》2010年第4期14-16,共3页Henan Metallurgy

摘　　要：利用金相检验、扫描电镜和断口分析的方法,对探伤不合格的中板进行分析,发现了MnS夹杂物、中心线裂纹和气泡,分析证明,这些缺陷是影响中板探伤不合格的因素。检验还发现中板中心存在异常组织,这使钢的脆性增加,轧制时这些缺陷得以扩展。Metallographic examination,SEM and fracture analysis were used to analyze the unqualified medium plate by flaw detection.The results showed that MnS inclusion,crack in center line and bubble were the factors to cause the unqualified medium plate.Meanwhile,abnormal structure in the center of medium plate was detected and it increased the brittleness of steel and extended the defection range during rolling process.

关 键 词：中板探伤 裂纹 气泡 夹杂物 

分 类 号：TG115.28[金属学及工艺—物理冶金]