超低温容器焊接用MAG焊丝工艺评定  

Procedure qualification of MAG welding wires for ultra-low temperature vessel welding

作　　者：富泉 王梗蕊 毕沿苹 王国佛 刘满雨 李丹晖 徐亦楠 FU Quan;WANG Gengrui;BI Yanping;WANG Guofu;LIU Manyu;LI Danhui;XU Yinan(Wuhan Heavy Duty Machine Tool Group Corporation,Wuhan 430000,Hubei,China;Harbin Well Welding Co.,Ltd.,Harbin 150060,Heilongjiang,China)

机构地区：[1]武汉重型机床集团有限公司,湖北武汉430000 [2]哈尔滨威尔焊接有限责任公司,黑龙江哈尔滨150060

出　　处：《金属加工（热加工）》2024年第11期46-49,共4页MW Metal Forming

摘　　要：针对某大型低温容器焊接接头去应力热处理后-196℃冲击吸收能量≥60J的要求,对国产ER316LMnG焊丝和进口ER317Lmod焊丝进行焊接工艺评定试验。结果表明:焊接接头拉伸性能、-196℃低温冲击性能、弯曲性能和晶间腐蚀性能均符合技术要求,其中-196℃冲击吸收能量能够稳定在90J以上。由此可知,以上2种焊丝均可用于304LN奥氏体不锈钢材质超低温容器的焊接。According to the design requirements of a large cryogenic vessel,the impact absorption energy of welded joints at-196℃after stress relief heat treatment is≥60J.Through the welding process evaluation test of domestic ER316LMnG welding wire and imported ER317Lmod welding wire,the results show that the tensile properties,impact absorption energy at-196℃,bending properties and intergranular corrosion properties of the welded joints all meet the technical requirements.In particular,the impact absorption energy at-196℃can remain stable above 90J.It can be seen that,the two welding materials can be used for 304LN austenitic stainless ultra low temperature vessel welding.

关 键 词：304LN 低温冲击 低温容器 焊丝 熔化极气体保护焊 

分 类 号：TG444.7[金属学及工艺—焊接]