30CrMnSiA与1Cr18Ni9Ti异种钢TIG自动焊工艺研究  

Study on the TIG Automatic Welding Process of Dissimilar Steel of 30CrMnSiA and 1Cr18Ni9Ti

作　　者：岳海金 房冬青 邹鹤飞 彭铮 周栓 李文武 崔新浩 Yue Haijin;Fang Dongqing;Zou Hefei;Peng Zheng;Zhou Shuan;Li Wenwu;Cui Xinhao(Capital Aerospace Machinery Co.,Ltd.,Beijing 100076)

机构地区：[1]首都航天机械有限公司,北京100076

出　　处：《航天制造技术》2024年第1期28-32,共5页Aerospace Manufacturing Technology

摘　　要：本文针对30CrMnSiA和1Cr18Ni9Ti异种钢焊接难点,开展TIG自动焊接工艺研究。采用TIG自动焊工艺所获得的焊接接头表面及内部质量均无缺陷。通过对焊缝显微组织进行分析,1Cr18Ni9Ti侧热影响区组织晶粒粗化,而30CrMnSiA侧热影响区出现了比母材细小的组织。经力学性能测试发现室温拉伸强度接近于1Cr18Ni9Ti母材,应用TIG自动焊接工艺能够获得良好的力学性能。In this paper,TIG automatic welding process was studied aiming at the difficulties in welding 30CrMnSiA and 1Cr18Ni9Ti dissimilar steel.There was no defect on the surface and internal quality of welding joint obtained by TIG automatic welding process.The microstructure of weld was analyzed,and the grain coarsening in the heat affected zone of 1Cr18Ni9Ti side was found in the heat affected zone of 30CrMnSiA.It was found that the tensile strength at room temperature was close to 1Cr18Ni9Ti parent material.Good mechanical properties can be obtained by using TIG automatic welding process.

关 键 词：TIG自动焊 异种钢 显微组织 力学性能 

分 类 号：TG445[金属学及工艺—焊接] V463[航空宇航科学与技术—航空宇航制造工程]