9%Ni钢用国产镍基焊丝的焊接试验研究  

Study on welding test of domestic nickel base welding wire for 9%Ni steel

作　　者：卜华全 赵伟 臧晓飞 刘海定 任明皓 连轶博 BO Huaquan;ZHAO Wei;ZANG Xiaofei;LIU Haiding;REN Minghao;LIAN Yibo(Hefei General Machinery Research Institute Co.,Ltd.,Hefei 230031,China;China Machinery Industrial Products Co.,Ltd.,Beijing 100055,China;China Machinery Engineering Corporation,Beijing 100055,China;Chongqing Materials Research Institute Co.,Ltd.,Chongqing 400700,China)

机构地区：[1]合肥通用机械研究院有限公司,合肥230031 [2]中设集团装备制造有限责任公司,北京100055 [3]中国机械设备工程股份有限公司,北京100055 [4]重庆材料研究院有限公司,重庆400700

出　　处：《压力容器》2022年第1期19-26,共8页Pressure Vessel Technology

基　　金：CMEC科技成果转化项目(CMEC-KJZH-2017-02)。

摘　　要：针对镍基焊丝的热裂纹敏感性试验,研制出FISCO热裂纹试验装置,利用该装置对研制的ERNiCrMo-3镍基焊丝进行焊接热裂纹敏感性试验,结果表明,研制焊丝的热裂纹敏感性与进口焊丝相当,均具有较低的热裂纹敏感性。采用研制焊丝焊接9%Ni钢的工艺试验结果表明,焊接接头各项力学性能优良,焊缝组织为纯奥氏体组织,析出相很少,可以满足大型LNG储罐的设计要求。For the hot crack sensitivity test of nickel base welding wire,a FISCO hot crack test device was developed.The welding hot crack sensitivity test was carried out for ERNiCrMo-3 nickel base welding wire developed by using the device.The results show that the hot crack sensitivity of the developed welding wire is equivalent to that of the imported welding wire,and both have low hot crack sensitivity.The welding process test results of welding 9%Ni steel with the developed welding wire show that the mechanical properties of the welded joint are excellent,the weld structure is pure austenite and there are few precipitates.The developed welding wire can meet the design requirements of large LNG storage tank.

关 键 词：9%NI钢 镍基焊丝 热裂纹 

分 类 号：TH142.2[一般工业技术—材料科学与工程] TB302.4[机械工程—机械制造及自动化]