Research and development of butt welding technology for 690 nickel base alloy heat exchange tube

690镍基合金换热管对接焊接工艺 Research and development of butt welding technology for 690 nickel base alloy heat exchange tube 杨小杰 YANG Xiaojie 1 first-author 张丹萍 ZHANG Danping 1 戴德平 DAI Deping 1 东方电气(广州)重型机器有限公司 东方电气(广州)重型机器有限公司 Dong Fang (Guang Zhou) Heavy Machinery Co.,Ltd. Dong Fang (Guang Zhou) Heavy Machinery Co.,Ltd. 以镍基合金换热管(SB-163 N06690,尺寸φ19 mm×2.5 mm)的工艺研发为例,全面介绍该焊接工艺的开发过程,包括适用实际工况的焊接设备选型,焊接坡口的设计、试验与优化,焊接工艺参数的开发,必要的工装设计,焊接接头的检验,以及破坏性试验。通过工艺开发获得了高质量的焊接接头,各项指标验证符合使用要求,节约了大量工程制造成本,可在类似焊接接头上进行推广应用。 Taking the welding technology research and development of nickel base alloy heat exchange tube（SB-163 N06690,size φ19 mm ×2.5 mm） as an example,the develop-ment process of this welding technology is comprehensively introdu-ced,including the selection of welding equipment suitable for actual working conditions,design,test and optim-ization of welding groove,development of welding parameters,necessary tooling design,inspection and destructive test of welded joints. Through the technology development,the high quality welded joints are effectively obtained,the indexes are verified to meet the use requirements,and a lot of engineering manufacturing costs are saved. It is hoped that this welding technology can be popularized and applied in similar welding joints. 民用核设备 镍基合金换热管 焊接接头 焊接工艺 civil nuclear equipment nickel base alloy heat exchange tube welded joint welding technology TG44;TM623 2022-03-08 7 51