LI Changfan, HAO Yongkui, GU Dian, et al. Effect of single/double pass welded ioint performance of Q345E steel with repair welding once in bond area[J]. 2020,50(10):50-56.
LI Changfan, HAO Yongkui, GU Dian, et al. Effect of single/double pass welded ioint performance of Q345E steel with repair welding once in bond area[J]. 2020,50(10):50-56. DOI: 10.7512/j.issn.1001-2303.2020.10.10.
This paper studies the repair welding once in bond area influence the welding joint of Q345E steel of 4 mm single and 6 mm double pass. Based on mechanical properties test such as tensile,hardness,bending for repair welding joint; the metallographic structure before and after repair welding was analyzed;the metallographic structureof overlapping position of the original weld zone and repaired welding HAZ was analyzed.The metallographic structure of the heat-affected zone before and after repair welding was compared with that of the heat-affected zone after the first and second heat cycles respectively. It provides theoretical basis for further evaluation of joint performance.
关键词
熔合区补焊Q345E单道及双道焊力学性能金相组织
Keywords
bond area repair weldingQ345Esingle and double pass weldingmechanical propertiesmetallographic structure