核燃料棒电阻焊设备研制关键技术研究  

Research on Key Techniques of Resistance Welding Equipment Developing for Nuclear Fuel Rod

作　　者：安军靖 陈兵兵 谢志刚 张学粮 毕元波 鲁立[4] AN Junjing;CHEN Bingbing;XIE Zhigang;ZHANG Xueliang;BI Yuanbo;LU Li(Department of Engineering Physics,Tsinghua University,Beijing 100084,China;CGNPC Uranium Resources Co.,Ltd.,Beijing 100029,China;School of Material Science and Engineering,Tianjin University,Tianjin 300072,China;Suzhou Nuclear Power Research Institution,Suzhou 215004,China)

机构地区：[1]清华大学工程物理系,北京100084 [2]中广核铀业发展有限公司,北京100029 [3]天津大学材料科学与工程学院,天津300072 [4]苏州热工研究院有限公司,江苏苏州215004

出　　处：《电焊机》2024年第1期44-49,共6页Electric Welding Machine

基　　金：国家自然科学基金重点项目(U21B2079)。

摘　　要：为充分掌握影响核燃料棒电阻焊成形质量的关键因素,利用自研电阻焊专用设备研究了焊接电流、顶锻压力以及焊接时间等因素对电阻焊成形质量的影响规律,并与进口设备比较。结果表明,自研设备在顶锻结构和电极夹头等核心部件上采用新设计,使得焊缝成形与进口设备有显著差异,典型顶锻结合长度超过2 mm,该长顶锻变形可以采用超声检测直观表征焊缝缺陷,焊缝外观和组织结构检测均表明自研设备具有良好的焊接成形能力。In order to fully understand the key factors affecting resistance welding quality of nuclear fuel rods,the forming process of fuel rod end plug resistance welding was analyzed,and the influence of welding current,upsetting pressure and welding time on the welding quality of butt weld of zirconium alloy fuel rod was discussed by using domestic pressure resistance welding equipment,compared with the imported equipment,the domestic equipment adopted new design on the core components such as upsetting device and electrode clamp,which resulted in great difference in welding forming,it was observed that Joint length of typical upsetting welding was over 2 mm that could be used by ultrasonic testing to visually detected weld defects,the inspection on appearance status of the welding and metallographic structure also showed that the domestic equipment had good welding property.

关 键 词：燃料棒 电阻焊 顶锻成形 电极夹头 

分 类 号：TL352[核科学技术—核技术及应用]