喷注器焊缝熔深超声相控阵定量检测  

Ultrasonic Phased Array Technology Based Quantitative Detection of Weld Penetration Depth for Injector

作　　者：周世圆[1] 郑翀 赵灿 杜佩承 程宇涵 王永红 ZHOU Shiyuan;ZHENG Chong;ZHAO Can;DU Peicheng;CHENG Yuhan;WANG Yonghong(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Xi'an Space Engine Company Limited,Xi'an,Shaanxi 710100,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]西安航天发动机有限公司,陕西西安710100

出　　处：《北京理工大学学报》2023年第8期863-869,共7页Transactions of Beijing Institute of Technology

摘　　要：为了保证液体火箭发动机喷注器的安全性能,文中针对其复杂结构电子束焊缝,基于超声相控阵相对时间到达技术开展了焊缝熔深的定量检测方法研究,提出了水浸式相对时间到达技术检测方法;搭建了实验系统并利用CIVA仿真软件进行了检测仿真;根据喷注器截面结构设计制作了两种检测试样并对试样进行了检测实验;将焊接试样的超声检测结果与金相检测结果进行对比,验证了检测方法的有效性.采用水浸式相对时间到达技术可克服喷注器检测面尺寸小且存在凹槽难以检测的问题,实现其电子束焊缝熔深的定量检测,检测精度优于0.15 mm.In order to ensure the safety performance of liquid rocket engine injector,a quantitative detection method of weld penetration depth was carried out based on ultrasonic phased array relative arrival time tech-nique(RATT)for the electron beam welding line with complex structure.A water immersed RATT detection method was proposed firstly.And then,an experiment system was built,taking the CIVA as simulation software to carry out the detection simulation.According to the section structure of the injector,two kinds of detection samples were designed and manufactured to do correlative detection experiments with the samples.Comparing the ultrasonic detection results of the welded samples with their metallographic testing results,the effectiveness of the proposed detection method was verified.The results show that the water immersed RATT can overcome the detection difficulties of injector,including small size of detection surface and the existence of grooves.Real-izing quantitative detection of the penetration depth for electron beam welding line of injector,the detection ac-curacy can be better than 0.15 mm.

关 键 词：电子束焊接 熔深检测 超声相控阵 相对时间到达技术(RATT) 

分 类 号：TB553[理学—物理]