沈阳工业大学学报Issue(6)：647-651,5.DOI:10.7688/j.issn.1000-1646.2014.06.09
激光电弧复合焊接高强钢的性能
Performances of laser-arc hybrid welded high strength steel
摘要
Abstract
In order to investigate the effect of welding parameter on the performances of laser-arc hybrid welding,a 2 kW fiber laser and metal active-gas welding (MAG)were used to weld 780 MPa high strength steel plate.The mode of metal transfer and morphology of plasma obtained by laser leading or arc leading were observed with a high-speed camera.The effect of characteristics of laser leading or arc leading, laser-arc distance,defocusing distance,MAG current and mode of metal transfer on the performances of laser-arc hybrid welding was investigated.The results show that a better weld bead formation is gained by the arc-leading.The plasma not only affects the weld bead shape,but also influences the optimum laser-arc distance.The laser-arc distance has no significant effect on the bead width,while the welding current will affect the bead shape and penetration.With increasing the welding current,the penetration increases.The maximum penetration is obtained when the defocusing distance is -2 mm.关键词
激光/电弧复合焊接/光纤激光/高强钢/高速摄像机/熔滴过渡/等离子体/离焦量/焊缝形状Key words
laser-arc hybrid welding/fiber laser/high strength steel/high speed camera/metal transfer/plasma/defocusing distance/weld bead shape分类
矿业与冶金引用本文复制引用
徐国建,李响,邢飞,刘祥宇,唱丽丽,沓名宗春..激光电弧复合焊接高强钢的性能[J].沈阳工业大学学报,2014,(6):647-651,5.基金项目
沈阳市科学技术计划资助项目（F13-319-6-03）． （）
