Investigation of Fast-Flowing Processes of Heat and Mass Transfer during Arc Welding with a Melting Electrode under Conditions of Laser Coherent Radiation

摘要

The results of the development and manufacturing of a unique research complex for investigating fast-flowing processes of heat and mass transfer during arc welding with a melting electrode are presented. The advantages of the developed complex over traditionally used ones are shown using cinema and video cameras by shadowing the image of heat and mass transfer of a metal. Studies of fast processes using high-speed video recording require powerful backlighting, such as a scattered laser beam, which enhances the visualization of the observed object, namely, the process of melting and transferring each electrode metal droplet under conditions of intense light emission from the electric arc. The article contains explanatory diagrams, control algorithms, video frames of a separate welding microcycle, and examples of recorded oscillograms and the graphical representations of the changes in their quantitative values.