异种钢Q235B/304L焊接过渡区疑似缺陷的无损检测  

Nondestructive testing on suspected defects in welding transition zone of dissimilar steel Q235B/304L

作　　者：陈志强[1] 张洪波[1] 陈柳 CHEN Zhiqiang;ZHANG Hongbo;CHEN Liu(School of Quality and Technical Supervision,Hebei University,Baoding 071005,China;School of Computer Science,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]河北大学质量技术监督学院,保定071005 [2]中国地质大学计算机学院,武汉430074

出　　处：《无损检测》2020年第12期20-23,58,共5页Nondestructive Testing

摘　　要：使用超声检测和着色渗透检测,确诊了目视检查中发现的泵塔区异种钢(Q235B和304L)焊接过渡区焊缝表面疑似横向缺陷的性质;通过宏观剖伤分析结合着色渗透检测,进一步验证了横向缺陷的裂纹属性和分布特征;利用PMI(材料金属成份识别-光谱分析法)数据,初步分析了裂纹出现的原因。Ultrasonic testing and color penetrant testing were used to confirm the suspected lateral defects on the weld surface of the dissimilar steel Q235B and 304L in the pump tower area found in the visual inspection.The macroscopic fracture analysis combined with the color penetrant inspection has further verified the findings.The crack attributes and distribution characteristics of the transverse defects were analyzed;the cause of the crack initiation was preliminarily analyzed using PMI(material metal composition identification-spectral analysis method)data.

关 键 词：异种钢对接焊过渡区 疑似横向缺陷 材料金属成分识别 

分 类 号：TG115.28[金属学及工艺—物理冶金]