690镍基合金焊条熔敷金属性能研究

690镍基合金焊条熔敷金属性能研究 Research on the properties of 690 nickel base alloy welding electrode for shielded metal arc welding 谷雨 GU Yu 1 first-author 张俊宝 ZHANG Junbao 1 黄逸峰 HUANG Yifeng 1 左波 ZUO Bo 1 余燕 YU Yan 1 上海核工程研究设计院有限公司 上海核工程研究设计院有限公司 Shanghai Nuclear Engineering Research & Design Institute Co.,Ltd. Shanghai Nuclear Engineering Research & Design Institute Co.,Ltd. 690镍基合金焊接材料广泛用于核电设备接管安全端焊缝、J型坡口焊缝以及耐蚀层堆焊,目前核岛设备用690镍基合金焊接材料基本依赖进口。采用拉伸试验对国内研发的核电设备用690镍基合金焊条的力学性能进行评价,并与进口焊条进行对比分析。结果表明,国产690镍基合金焊条满足ASME类别号ENiCrFe-7,焊缝金属力学性能达到进口焊条Inconel 152水平,室温抗拉强度高于650 MPa,350℃抗拉强度高于520 MPa,屈服强度高于340 MPa,焊条焊接工艺性良好。 690 nickel base alloy welding materials are wide ly used for the welds in nuclear power equipment nozzle safeend,J-type groove weld and corro sion resistant layer surfacing.At present,690 nickel base alloy welding materials used for nuclear island equipment manufacturing are basically dependent on im port.The mechanical properties of 690 nickel base alloy welding electrode for nuclear power equipment developed in China are evaluated by tensile test and compared with imported electrode.The results show that domestic 690 nickel base alloy welding electrode meets the AWS classification ENiCrFe-7,its mechani cal properties of weld metalreaches the level of imported Inconel 152 electrode.The tensile strength of the weld metal at room tem perature is higher than 650 MPa,and themetal yield and tensile strength at 350℃ exceed 340 MPa and 520 MPa respectively,and the welding electrode has good welding technology capability. 核电设备 690镍基合金焊条 ENiCrFe-7 力学性能 nuclear power equipment 690 nickel base alloy welding electrode ENiCrFe-7 mechanical properties TG422.1 国家科技重大专项（2018ZX06004001） 2022-03-08 12 50