1.25Cr-0.5Mo钢TIG堆焊347不锈钢工艺  

TIG surfacing process of 347 stainless steel on 1.25Cr-0.5Mo steel

作　　者：李战斌[1] 马鸣[1,2] 徐祥久 丁铁军[1] Li Zhanbin;Ma Ming;Xu Xiangjiu;Ding Tiejun(Harbin Boiler Company Limited,Harbin 150046,Heilongjiang,China;State Key Laboratory of Efficient and Clean Coal-fired Utility Boilers,Harbin 150046,Heilongjiang,China)

机构地区：[1]哈尔滨锅炉厂有限责任公司,黑龙江哈尔滨150046 [2]高效清洁燃煤电站锅炉国家重点实验室,黑龙江哈尔滨150046

出　　处：《机械制造文摘（焊接分册）》2022年第4期41-44,共4页Welding Digest of Machinery Manufacturing

摘　　要：某压力容器产品的小口径接管,需在其内壁制备347不锈钢耐蚀堆焊层,且对堆焊层铁素体含量、化学成分及耐晶间腐蚀性能提出要求。针对该问题,采用TIG堆焊在1.25Cr-0.5Mo钢基材上制备347不锈钢耐蚀层,采用该工艺实现小口径管内壁堆焊过程。对试件堆焊层进行无损检测,同时对堆焊层化学成分、铁素体含量、宏观组织、微观组织、力学性能和耐晶间腐蚀性能等检验项目进行验证。结果表明,采用该堆焊工艺可以获得优质的堆焊层,且堆焊层的各项性能指标均满足产品要求。It was necessary to surfacing 347 stainless steel corrosion resistance layer on the inner wall of small diameter pipe of a pressure vessel,and ferrite content,chemical composition and intergranular corrosion resistance of surfacing layer were required.Focus on the problem,TIG surfacing was used to fabricate 347 stainless steel corrosion resistance layer on 1.25Cr-0.5Mo steel substrate,and surfacing process of inner wall of small diameter pipe was realized.Non-destructive test of surfacing layer of test specimen was carried out.Meanwhile,chemical composition,ferrite content,macrostructure,microstructure,mechanical properties and intergranular corrosion resistance of surfacing layer were verified.The results showed that surfacing layer with high quality could be obtained by the surfacing process,and performance indexes of surfacing layer met requirements of product.

关 键 词：堆焊工艺 晶间腐蚀 1.25Cr-0.5Mo钢 347不锈钢 

分 类 号：TG455[金属学及工艺—焊接]