100mm高强钢板探伤不合格原因分析  

Analysis of Causes for Unqualified Flaw Detection of 100 mm High Strength Steel Plate

作　　者：刘坤 董苗翠 金璐 丛林 侯东华 LIU Kun;DONG Miaocui;JIN Lu;CONG Lin;HOU Donghua(Shandong Iron and Steel Group Rizhao Co.,Ltd.,Rizhao 276800,China)

机构地区：[1]山东钢铁集团日照有限公司,山东日照276800

出　　处：《山东冶金》2024年第3期20-22,共3页Shandong Metallurgy

摘　　要：100mm高强钢板经超声波探伤后,发现钢板两侧距离边部200~300mm处存在连续点状缺陷,定位取样后借助金相显微镜、扫描电镜(SEM)、能谱仪(EDS)等手段进行综合分析。结果表明:钢板心部存在许多大尺寸的(Ti,Nb)N复合夹杂物和严重的中心偏析是造成钢板探伤不合格的主要原因。After ultrasonic inspection of 100mm high-strength steel plate,continuous point-like defects were found between 200-300mm from both sides of the steel plate.After location sampling,metallographic microscope,scanning electron microscope(SEM),energy dispersive spectrometer(EDS)and other means were used for comprehensive analysis,and the results showed that:there are many large size(Ti,Nb)N complex inclusions and serious center segregation of the steel plate.

关 键 词：高强钢板 探伤不合格 夹杂物 中心偏析 

分 类 号：TG142.1[一般工业技术—材料科学与工程]