中日-50℃乙烯球形储罐用焊条性能对比研究  

Comparative Study on the Performance of Welding Rods for Ethylene Spherical Storage Tanks at-50℃between China and Japan

作　　者：何前进 房务农 徐亮 He Qianjin;Fang Wunong;Xu Liang(Huangshan University,Huangshan,Anhui 245041,China;Hefei general machinery research institute Co.,Ltd.,Hefei,Anhui 230088,China)

机构地区：[1]黄山学院,安徽黄山245041 [2]合肥通用机械研究院有限公司,安徽合肥230088

出　　处：《化工设备与管道》2024年第5期16-21,共6页Process Equipment & Piping

基　　金：黄山学院人才研究启动基金(2019xkjq003)。

摘　　要：对国产J607RHDQ焊条和日本进口LB-65L焊条熔敷金属的化学成分、力学性能进行对比分析,并研究了焊缝金属焊接线能量、系列温度冲击、无塑性转变温度以及扩散氢含量等有关性能。结果表明:国产焊条J607RHDQ焊条整体性能与LB-65L焊条在同一水平,低温冲击功都远高于-50℃下80 J的要求,焊缝金属的低温韧性、断裂韧性较高,VTE、VTS及NDTT温度都较低。但国产J607RHDQ焊条有更好的焊接线能量适应性和抗吸潮能力,可替代进口LB-65L作为07MnNiMoDR钢板配套焊条,用于-50℃低温乙烯球形储罐的建造,真正解决了低温乙烯项目建造过程中的“卡脖子”问题。A comparative analysis was conducted on the chemical composition and mechanical properties of the deposited metal of domestic J607RHDQ welding rod and imported LB-65L welding rod from Japan.The welding line energy,series temperature impact,non plastic transition temperature,and diffusion hydrogen content of the weld metal were studied.The results showed that the overall performance of domestic welding rod J607RHDQ was at the same level as LB-65L welding rod,and the low-temperature impact energy was much higher than the requirement of 80 J at-50℃.The low-temperature toughness and fracture toughness of the weld metal were higher,and the VTE、VTS,and NDTT temperatures were lower.However,domestically produced J607RHDQ welding rod had better welding line energy adaptability and moisture absorption ability,which can replace imported LB-65L as a supporting welding rod for 07MnNiMoDR steel plate.It was used for the construction of-50℃low-temperature ethylene spherical storage tanks,truly solving the"bottleneck"problem during the construction process of low-temperature ethylene projects.

关 键 词：J607RHDQ焊条 LB-65L焊条 乙烯球形储罐 低温韧性 

分 类 号：TG422.1[金属学及工艺—焊接]