有限元模拟仿真在压力容器对接接管焊缝相控阵超声检测工艺设计中的研究与验证  

Study and Validation of Finite Element Simulation in the Phased Array Ultrasonic Inspection Technique Design of Pressure Vessel Nozzle Butt Weld

作　　者：魏荣帅 陈宇[2] 周凤革 杨高 冶金辉 WEI Rongshuai;CHEN Yu;ZHOU Fengge;YANG Gao;YE Jinhui(Harbin Electric Corporation(QHD)Heavy Equipment Co.,Ltd.,Qinhuangdao 066206,China;Harbin Welding Training Institute,WTI Harbin,Harbin 150046,China;CFHI Dalian Nuclear Power and Petrochemical Co.,Ltd.,Dalian 116014,China)

机构地区：[1]哈电集团(秦皇岛)重型装备有限公司,河北秦皇岛066206 [2]机械工业哈尔滨焊接技术培训中心,黑龙江哈尔滨150046 [3]一重集团大连核电石化有限公司,辽宁大连116014

出　　处：《电焊机》2024年第1期24-29,共6页Electric Welding Machine

摘　　要：针对大壁厚压力容器接管焊缝多为窄间隙对接焊接头,超声检测中存在扫查路径复杂、定量定性精度差和检出率相对较低等难点,引入有限元模拟仿真技术。通过建立工件3D模型和不同类型的缺陷,模拟各缺陷在压力容器筒体外壁和接管内壁相控阵超声检测时的响应情况,优化相控阵超声探头、楔块设计和探头运动轨迹,最终实现检测工艺的理论设计。在带有自然缺陷的模拟试块上,验证检测工艺的准确性和可靠性。对比有限元模拟仿真和在模拟试块上的实际检测情况表明,经过仿真设计过的相控阵超声检测工艺可有效提高接管窄间隙焊缝中缺陷的检出率和检测精度。Ultrasonic testing inspection on narrow-gap nozzle butt welds in the large thickness pressure vessels is known as very difficult issue all over the word,such as complicated scanning path,relatively quantitative evaluation and low probability of detection.Finite element simulation technology was introduced to simulate the response from each defect in establishing 3D workpiece models.Optimized the Phased array probe,wedge and procedure.The procedure was demonstrated to perform acceptably by qualification block with natural defects.The results show that Phased array Ultrasonic technology designed by simulation can effectively improve the performance for narrow gap nozzle butt weld.

关 键 词：超声相控阵 窄间隙焊接接头 压力容器 有限元模拟仿真 

分 类 号：TG457[金属学及工艺—焊接]