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| EH36钢厚板双面双弧打底焊焊缝组织及性能 | |
| 引用本文： | 刘殿宝,李福泉,谭财旺,陈彦宾,赵玉梅.EH36钢厚板双面双弧打底焊焊缝组织及性能[J].焊接学报,2011,32(1):81-84. |
| 作者姓名： | 刘殿宝 李福泉 谭财旺 陈彦宾 赵玉梅 |
| 作者单位： | 1. 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001;渤海船舶重工有限责任公司,辽宁,葫芦岛,125004 2. 哈尔滨工业大学,现代焊接生产技术国家重点实验室,哈尔滨,150001 3. 渤海船舶重工有限责任公司,辽宁,葫芦岛,125004 |
| 摘 要： | EH36钢厚板广泛应用于造船行业,文中采用多层多道双面双弧机器人MAG自动化立焊工艺焊接EH36钢,具有显著的优点和广阔的应用前景.打底焊是多层多道焊接中最重要的工艺过程,对接头性能有着重要影响.文中对打底焊接头组织和性能进行了研究.结果表明,厚板双面双弧立焊打底接头组织主要为针状铁素体和先共析铁素体.在经历随后的多层... |
| 关 键 词： | 打底焊 双面双弧 机器人立焊 焊缝组织 |
| 收稿时间： | 2009/10/29 0:00:00 |
Microstructure and performance of backing weld joint of EH36 steel thick plate by double-sided arc welding |
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| LIU Dianbao,LI Fuquan,TAN Caiwang,CHEN Yanbin and ZHAO Yumei.Microstructure and performance of backing weld joint of EH36 steel thick plate by double-sided arc welding[J].Transactions of The China Welding Institution,2011,32(1):81-84. | |
| Authors: | LIU Dianbao LI Fuquan TAN Caiwang CHEN Yanbin and ZHAO Yumei |
| Affiliation: | State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China;Bohai Shipbuilding Heavy Industry Co. Ltd., Huludao, Liaoning 125004, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding Production Technology, Harbin Institute of Technology, Harbin 150001, China and Bohai Shipbuilding Heavy Industry Co. Ltd., Huludao, Liaoning 125004, China |
| Abstract: | EH36 steel thick plate is widely used in shipbuilding industry.In this paper,double-sided arc welding(DSAW) vertical welding of EH36 steel is carried out by robots,which exhibits distinctive merits and broad prospective in application.Backing weld is the most significant procedure in the multi-layer and multi-pass welding,which exhibits important impact on weld joint.Microstructure and performance of back welding joint were studied.The results indicated that proeutectoid ferrite(PF) and acicular ferrite(AF) were the main structure in the weld joint after DSAW.The structure in the back weld was refined after reheating effect in the subsequent multi-layer and multi-pass welding.Microstructure at coarse-grained zone of backing weld joint was bainite and maetensite lath.The hardness of back weld was slightly lower than that of the second layer bead.Joint tensile strength was higher than that of base metal,and the characteristic of fracture appearance was dimple. |
| Keywords: | backing weld double-side arc welding robot vertical welding microstructure of weld |
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