摘要
采用水浸聚焦超声C扫描成像的检测方法,研究了铜钢堆焊接头的质量评价。首先从理论上分析了聚焦声束垂直于圆柱形工件表面入射时,沿圆柱体轴线与圆周两个互相垂直的方向上的声场情况。在此基础上对堆焊试件进行了超声C扫描检测试验,为了验证检测结果的可靠性,在试件上典型位置处进行了破坏性检测试验,分析了相应的超声A扫描信号特征。结果表明,采用该方法评定铜钢堆焊接头质量是可行的,同时指出采用从基体一侧入射的检测方式能够获得较高的可靠性。
By using water immersion focusing method in an ultrasonic C-scan inspection system,the quality of Cu/steel surfacing weld was evaluated.The sound field in the two planes of axial and radial to the cylinder were analyzed when the sound beam vertically incidents into the cylindrical work piece.Based on the above theoretical analyses,surfacing welds were inspected by C-scan mode.In order to verify the reliability of ultrasonic test,ultrasonic A-scan signals received from typical area of the workpiece were studied and the corresponding destructive test was done.The result shows that it is feasible to evaluate the surfacing weld by using the proposed method.Moreover,the tested result is more reliable when sound beam incidents into the piece from the base metal.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2007年第5期101-104,共4页
Transactions of The China Welding Institution
关键词
异种材料连接
堆焊
超声C扫描
水浸聚焦
dissimilar material joining
surfacing
ultrasonic C-scan
water immersion focusing
