Abstract
The penetration status profoundly influences the dynamic behaviors of keyhole and molten pool during laser welding. This paper presents a three-dimensional numerical simulation model with a ray-tracing method, which is dedicated to investigating the different penetration statuses in laser welding of type 304 stainless steel. In the proposed model, the factors include melting, evaporation, solidification, the vapor-induced plume heat transfer, buoyancy force, Marangoni effect, surface tension, and recoil pressure. Unlike existing similar work, three types of penetration status are investigated, including non-penetration, insufficient penetration, and full penetration. The weld cross-section geometry of simulation results is in good agreement with the experimental results. The behaviors of keyhole and molten pool, energy absorbed by the weldment, and flow field in the molten pool are discussed in details. It is found that the penetration status affects the dynamics of keyhole and molten pool, the temperature field, the absorbed energy, and the flow field, which is greatly connected with weld bead formation and joint quality.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The International Journal of Advanced Manufacturing Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
