OBRABOTKAMETALLOV Vol. 24 No. 2 2022 TECHNOLOGY The purpose of the simulation was to obtain a theoretical model for the distribution of working fl uid fl ows in the processing zone, subjected to a change in the angle of fl ushing. To achieve a given purpose in the work, it is necessary to build the geometry of the region of computation; set the boundary conditions of the computation model, compute the model for the processing depth of 2 mm, 10 mm, 15 mm and the location of the nozzles 15˚, 45˚ and 75˚ relative to the tool axis (Figure 5). Fig. 5. Processing model, where H is the depth of processing Fig. 6. Setting geometrical limits The experimental part, carried out in works [4–6], showed that products made of PCM during EDM are prone to sludge fusing on the processed surface. This is due to the irrational location of the fl ushing nozzles and the formation of turbulence in the processing zone. Simulation was performed after specifying the names of the boundary surfaces: part walls, ET and fl ush nozzles. Geometry limits were similar for 10 mm and 15 mm processing, however, only the angle of the nozzles changed (Figure 6).
RkJQdWJsaXNoZXIy MTk0ODM1