摘要
采用正交试验法,在不同参数下对厚度为30 mm的5083铝合金厚板进行了激光焊接工艺试验研究。结果表明,激光功率、焊接速度及环境压力对焊缝成形、气孔率均有不同程度的影响,其中环境压力对气孔率、熔深和深宽比的影响最大。当环境压强降至5 kPa时,熔深达到了常压下的2倍,气孔率仅为0.057%。研究结果为铝合金激光焊缝成形和气孔率的控制提供了参考。
An orthogonal experiment is designed to investigate the laser welding of a 30 mm thick 5083 aluminum alloy plate under different process parameters. The results show that, the laser power, the welding speed and the ambient pressure have different effects on weld formation and porosity, in which the effects of the ambient pressure on the porosity, the penetration depth and the depth-width ratio are the strongest. When the ambient pressure is decreased to 5 kPa, the penetration depth is twice that at normal pressure and the porosity is only 0. 057%. This research result provides a reference for the control of weld formation and porosity in the laser welding of aluminum alloys.
作者
王天鸽
唐新华
韩潇潇
芦凤桂
崔海超
Wang Tiange;Tang Xinhua;Han Xiaoxiao;Lu Fenggui;Cui Haichao(Shanghai Key Laboratory of Materials Laser Processing and Modification,School of Materials Science and Engineering Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2018年第11期27-35,共9页
Chinese Journal of Lasers
基金
国家自然科学基金(51675336)
关键词
激光技术
铝合金
环境压力
正交试验
焊缝成形
真空激光焊接
laser technique
aluminum alloy
ambient pressure
orthogonal tests
weld formation
laser welding in vacuum
