热丝TIG在接管Ni基合金内壁堆焊工艺要点  

Key points of applying hot wire TIG in Ni-based alloy surfacing of pipe inner wall

作　　者：郝玉奇[1] Hao Yuqi(Harbin Boiler Company limited,Harbin 150001,China)

机构地区：[1]哈尔滨锅炉厂有限责任公司,哈尔滨150001

出　　处：《机械制造文摘（焊接分册）》2024年第4期33-36,共4页Welding Digest of Machinery Manufacturing

摘　　要：针对公司正在生产的蒲城德士古式气化炉,因其堆焊要求特殊,上下筒体全部堆焊Ni基材料,难度大并且质量不易保证,尤其在筒体大直径接管内壁堆焊过程中,如何获得高质量的接管内壁堆焊,对整体堆焊质量和生产效率有着非常大的影响。文中针对上述气化炉堆焊技术要求,以公司采用热丝TIG设备堆焊蒲城大直径接管内壁为实例,综述了热丝TIG在接管内壁堆焊Ni基合金的应用情况。结果表明,焊缝裂纹率减少了16%,焊后无损检测一次性合格率提升了40%,焊接效率提高了近30%。The Pucheng Texaco gasifier being produced in our company has a unique welding requirement-use Ni-based materials to fully weld the upper and lower cylinders.Difficulties in ensuring quality are significant,especially during the process of welding the inner wall of the large-diameter pipe within the cylinder.Achieving high-quality inner wall surfacing bears substantial influence on the overall welding quality and production efficiency.In response to these gasifier welding demands,our company has adopted hot wire TIG equipment to weld the inner wall of their large-diameter pipe,and has conducted an extensive review of the application of hot wire TIG in welding Ni-based alloy on the inner wall of the pipe.The results indicate a 16%reduction in weld seam crack rate,a 40%increase in first-pass non-destructive testing qualification rate,and nearly a 30%improvement in welding efficiency.

关 键 词：热丝TIG Ni基堆焊 接管 

分 类 号：TG47[金属学及工艺—焊接]