摘要
用新研发的自动焊接系统成功进行了S960QL钢材的窄间隙熔化极气体保护焊,结果证明其接头的机械性能可满足欧盟标准要求。焊接接头先焊部分的机械性能优于后焊部分;此外,同一接头的不同部位具有不同的韧性,其原因是接头的不同部位具有不同的化学成分,以及多道焊的热循环对接头显微组织有影响。
960QL steel was successfully welded with narrow gap Gas-Metal-Arc-Welding （GMAW） by a novel automatic weld system. Results show that the mechanical properties of the welded joint fulfill the EU standard.The mechanical properties of the earlier welded joint are better than those of the later welded joint. Moreover, the ductility of the joint varies at different locations. The reason is due to the difference in chemical compositions in the joint and the thermal cycling effect of multi-pass welding process.
出处
《电焊机》
北大核心
2012年第4期76-78,96,共4页
Electric Welding Machine
基金
国际科技交流与合作项目(2011DFb70130)
关键词
高强钢
S960QL
窄间隙焊
气体保护焊
high strength steel
S960QL
narrow gap welding
gas-metal-arc-welding
