Modeling of distribution of the powder composition under the influence of the electromagnetic field when implementing DMLS technology

Rapid development of scientific and technological progress and innovative technologies prompts the scientific community to respond quickly to requests from industrialists and engineers from all over the world. In any industry, 3-D technology is widely used, in particular, one of the progressive methods of visualizing virtual computer models is DMLS (direct laser fusion of powder composition). Therefore, the search for ways to improve this technology certainly remains relevant.The analysis of priori information allowed us to obtain comprehensive information on the state of scientific research aimed at finding ways to improve efficiency of the DMLS technology implementation. In particular, it was found that the main emphasis of research is on the use of hybrid methods and approaches aimed at finding additional energy sources, including electromagnetic fields for combined use with laser technology.The aim of this work is to improve efficiency of implementing DMLS technology by improving the means of delivering the powder composition into the laser radiation zone, namely, by introducing additional energy source in the form of the elec-tromagnetic field.In this work, numerical modeling of the behavior of a gas-powder jet under the influence of the electromagnetic field was carried out. In particular, distribution of the dispersed phase of the gas-powder jet was investigated, namely its transverse con-centration in the horizontal plane. Numerical modeling of the behavior of the gas-powder jet made it possible to determine the local region of the powder flow and also establish possibility of controlling the main technological parameters of the process, in particular, the optimal value of the electromagnetic field at which the maximum concentration of the dispersed phase in the gas-powder jet is observed was determined. The universal technique was also developed that makes it possible to simplify geometric configuration and reduce the cost of manufacturing means of delivering powder material to the laser processing zone.