回火焊道技术在大型锻件补焊中的应用的试验研究  

Experimental Study on Application of Tempering Bead Techniquein Repair Welding of Heavy Forging

作　　者：杨永强 马晓健 刘露芊 郑春雷[4] YANG Yongqiang;MA Xiaojian;LIU Luqian;ZHENG Chunlei

机构地区：[1]久益环球(天津)装备制造有限公司,天津300308 [2]唐山开元自动焊接装备有限公司,河北唐山063000 [3]燕山大学机械工程学院,河北秦皇岛066011 [4]燕山大学材料学院材料综合实验教学示范中心,河北秦皇岛066004

出　　处：《大型铸锻件》2024年第5期72-76,共5页Heavy Casting and Forging

摘　　要：介绍了大型锻件的焊接接头的回火焊道工艺及焊后无损检测及力学性能测试。将回火焊道技术中的半焊道技术应用于20CrMnTi锻钢的焊接接头中,并通过合理的焊道布置和焊接热处理,获得的良好的焊接接头组织、拉伸和冲击性能均满足标准要求。半焊道技术为不具备退火条件的铸锻件的返修,提供了可行的工艺措施。The temper bead technique,nondestructive test after welding and the mechanical property test of the welded joint of heavy forging are introduced.Half bead technique of temper bead technique is applied in welded joint of 20CrMnTi forged steel.Good microstructure is obtained by reasonable weld bead arrangement and proper welding heat treatment.The tensile and impact properties of the welded joint can meet the standard requirements.Half bead technology can provide feasible technological measures for the repair of forgings or castings not applicable to annealing conditions.

关 键 词：回火焊道技术 半焊道技术 20CrMnTi 大型锻件 

分 类 号：TG44[金属学及工艺—焊接]