M. Bachmann, V. Avilov, A. Gumenyuk, and M. Rethmeier
BAM Federal Institute For Materials Research and Testing
Germany
High-power laser beam welding uses a localized heat source to achieve narrow deep welds and high welding rates. Engineers run into some difficulties because the use of a localized heat source often results in the distortion of metal components; spattering and the ejection of droplets from the weld pool results in underfills, undercuts, craters, blowholes, or blowouts.
A stationary magnetic field is applied to the laser welding process to improve its quality and counteract effects such as spattering. BAM Federal Institute For Materials Research and Testing in Germany are working to improve the quality of high-power laser beam welding using COMSOL Multiphysics. To model and simulate the laser beam welding, heat transfer, fluid dynamics, and electromagnetics were coupled and solved. This allowed BAM to accurately model the process by including Marangoni effects, gravity, latent heats of fusion, and Lorentz forces.
Suggested Stories
Music to Your Ears: New Transducers Meet Electrostatic Headphones
Electrostatic transducers offer enhanced clarity, less distortion, and a wider bandwidth than transducers in ...
Modeling Inertial Focusing in Straight and Curved Microfluidic Channels
In many medical procedures and tests, it is necessary to isolate cells of interest for further analysis. Microfluidics ...
Light, Strong, and Defect-Free Laser Welding: Perfecting the Process for the Automotive Industry
Dozens of safety features in modern automobiles help reduce risk while driving, but regardless of their complexity, ...
Bosch Powers the Automotive Sector Toward an Electrified Future
To design three-phase inverters and DC link capacitors, two integral components of electric vehicle drivetrains, Bosch ...
