Study of the free surface fluctuations in a GMAW weld pool with globular transfer mode
The transient free surface fluctuations during one droplet impingement period in a gas metal arc welding (GMAW) weld pool with globular transfer mode are studied to investigate the formation of cripples on weld bead surfaces by both experimental and numerical methods. Capillary waves and gravity waves are observed on the free surface of weld pools by using high-speed photography. Theoretical analyses indicate that the capillary waves contribute to the formation of cripples. The wave equation is established to simulate the dynamics of 3D free surface fluctuations. The predicted wave parameters show good agreement with the experimental results in current study.
free surface fluctuation weld pool dynamics capillary wave GMAW
Zhao Pengcheng Li Dasen
College of Electromechanical Engineering Qingdao University of Science and Technology Qingdao, Shandong,China 266061
国际会议
青岛
英文
29-32
2010-10-28（万方平台首次上网日期，不代表论文的发表时间）