某工件电子束焊缝裂纹的超声检测  

Ultrasonic testing of electron beam weld crack of the workpiece

作　　者：徐健[1] 段建刚[1] 范兴钊 李晴 XU Jian;DUAN Jiangang;FAN Xingzhao;LI Qing(Shenyang Liming Aero-engine Co.,Ltd.,Shenyang 110043,China;Shandong Ruixiang Mould Co.,Ltd.,Jining 272400,China)

机构地区：[1]沈阳黎明航空发动机有限责任公司,沈阳110043 [2]山东瑞祥模具有限公司,济宁272400

出　　处：《无损检测》2022年第7期69-71,74,共4页Nondestructive Testing

摘　　要：针对某工件电子束焊缝需要检测的裂纹位置和区域,提出了专用波型转换斜楔块与纵波直探头配合的超声检测方法。根据裂纹位置和检测区域制作了对比试样,其上有不同深度的电火花刻槽用以模拟不同深度的裂纹;根据工件环状电子束焊缝位置、周围结构、横波声束角、声束中心位置、纵波直探头、焊缝宽度、焊缝厚度等设计并制作了专用波型转换斜楔块。该超声检测方法可检测出对比试样上不同深度的电火花刻槽,可用于该工件电子束焊缝裂纹的检测。Aiming at the crack position and area in the electron beam weld of the workpiece, ultrasonic testing method of special wave mode conversion wedge combined with longitudinal wave straight probe was proposed. According to the crack location and detection area, the comparison sample was made. There were EDM grooves with different depths on the comparison sample to simulate cracks with different depths. A special wave mode conversion wedge was designed and manufactured according to the position of annular electron beam weld, surrounding structure, transverse wave beam angle, sound beam center position, longitudinal wave straight probe, weld width and weld thickness. Through the test, the EDM grooves with different depths on the comparison sample could be detected. This method could be used to detect the electron beam weld crack of the workpiece.

关 键 词：电子束焊缝 裂纹 波型转换斜楔块 纵波直探头 超声检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]