ABSTRACT
The work is devoted to the study of the influence of the circulation of the protective medium in the working space of the printer camera during laser powder layer melting (LPBF). According to the results of research, the influence of the speed and trajectory of blowing is especially relevant for materials with low specific density. The material for research is LPBF-AlSi10Mg alloy samples, evenly spaced along the working plane of the camera, manufactured according to rational technological modes. Tensile tests were carried out according to standard methods. Continuity was determined metallographically using ImageJ software. It was established that when supplying a constant feed rate and circulation of the protective medium, alloy particles are captured and transferred to the exit nozzle, which affects the final integrity, namely the pore size. The dependence of mechanical properties on the location of the studied samples in the platform area is shown.
