Research on the properties of 690 nickel base alloy welding electrode for shielded metal arc welding

GU Yu; ZHANG Junbao; HUANG Yifeng; ZUO Bo; YU Yan

doi:10.7512/j.issn.1001-2303.2020.12.01

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Research on the properties of 690 nickel base alloy welding electrode for shielded metal arc welding
Vol. 50, Issue 12, Pages: 1-4(2020)
DOI： 10.7512/j.issn.1001-2303.2020.12.01

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GU Yu, ZHANG Junbao, HUANG Yifeng, et al. Research on the properties of 690 nickel base alloy welding electrode for shielded metal arc welding. [J]. 50(12):1-4(2020)
DOI：

GU Yu, ZHANG Junbao, HUANG Yifeng, et al. Research on the properties of 690 nickel base alloy welding electrode for shielded metal arc welding. [J]. 50(12):1-4(2020) DOI： 10.7512/j.issn.1001-2303.2020.12.01.

摘要

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。

Abstract

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.