传统的超声检测采用单晶片探头发散声束,对于检测复杂几何外形(如T型接头、Y型接头)及检测空间有限的焊缝,需要采用多种角度探头进行检测来提高检出率,检测效率低,而采用相控阵探头和聚焦声束即可克服传统超声的检测困难。采用相控阵技术检测很重要一点就是参数设定。参数设置决定扫查范围的覆盖、缺陷尺寸测量及缺陷定位等。本文重点介绍超声相控阵技术在特殊结构焊缝检测中的工艺参数设置,以利于 Conventional ultrasonic testing uses a single-chip probe to disperse the sound beam. For the detection of complex geometries (such as T-joints and Y-joints) and limited weld space, a variety of angle probes are required to improve the detection rate. Detection Inefficient, and the use of phased array probe and focused beam to overcome the traditional ultrasound detection difficulties. The use of phased array technology is very important test parameters set. Parameter setting determines the sweep coverage, defect size measurement and defect location. This article focuses on ultrasonic phased array technology in the special structure of the weld inspection process parameters set to facilitate