摘要
为阐明全熔透状态下工艺参数对激光-MAG复合焊接焊缝成形的影响,以6 mm厚的AH36高强钢为试验材料,采用碟片激光与MAG电弧复合的方法进行焊接,开展高焊速全熔透状态下的焊接工艺研究,分析了送丝速度、激光功率、焊接速度等工艺参数对焊缝成形及接头力学性能的影响。结果表明:一定范围内,增大送丝速度或激光功率能减少底部驼峰;在激光功率为6.5 kW、送丝速度为8 m/min、焊接速度为2.5 m/min时,得到的焊缝成形良好且无焊接缺陷。焊缝区域显微硬度高于母材,焊接接头抗拉强度高于母材。
In order to clarify the effect of process parameters on weld formation of laser-MAG hybrid welding under full penetration state, full penetration welding process experiments at high welding speed had been carried out on 6 mm AH36 high strength steel by hybrid laser-arc welding with disc laser. The effects on the weld formation and mechanical properties of wire feeding speed、laser power、welding speed were studied. The results show that within a certain range, increasing the wire feeding speed or laser power can reduce the back hump. When the laser power is 6.5 kW, the wire feeding speed is 8 m/min, and the welding speed is 2.5 m/min, the weld formation is good and there are no welding defects. The hardness of weld metal is greater than that of the base metal. The tensile strength of the welded joint is greater than that of the base metal.
作者
陈峯
罗子艺
王凯
易耀勇
Chen Feng;Luo Ziyi;Wang Kai;Yi Yaoyong(School of Mechatronic Engineering and Automation,Foshan University,Foshan,Guangdong 528225,China;China-Ukraine Institute of Welding of Guangdong Academy of Sciences,Guangzhou Guangdong 510650,China)
出处
《应用激光》
CSCD
北大核心
2021年第5期937-942,共6页
Applied Laser
基金
国家自然科学基金项目(51805084)
广东省科技计划项目(2018A050506058,2019B1515120081)
广州经济技术开发区科技项目(2019GH19)
广东省科学院实施创新驱动发展能力建设专项资助项目(2018GDASCX-0803,2019GDASYL-0501011)。
关键词
复合焊接
激光
AH36高强钢
焊缝成形
力学性能
hybrid welding
laser
AH36 high strength steel
welding formation
mechanical properties
