Search academic texts

Information × Registration Number 0225U003037, (0121U111040) , R & D reports Title Manufacture, assembly and approbation of the experimental electron beam gun on a base of the high-voltage glow discharge and 10kW high-voltage power source for 3D printer with a use of metal granules popup.stage_title Виготовлення, складання та апробація дослідної електронно-променевої гармати на основі високовольтного тліючого розряду і високовольтного джерела її живлення потужністю 10кВт для 3D принтера з використанням металевих гранул Head Firstov Serhii O., Доктор фізико-математичних наук Registration Date 08-05-2025 Organization Frantsevich Institute for Problems of Materials Science National Academy of Science of Ukraine popup.description1 A manufacture of the 10 kW electron beam HVGD gun and its power supply for production of parts by a layered growth with a help of selective electron beam melting of granular metal powder. popup.description2 At the first stage of the work, individual parts of an experimental gas-discharge electron-beam gun with a cold cathode with a power of 10 kW were manufactured and assembly operations of the obtained parts were carried out after carrying out final adjustment work during their integration into the necessary units. The experimental gun consists of three nodes: cathode, anode nodes, as well as a hollow beam conductor with a water-cooling circuit, which is conjugated coaxially with the anode node. In order to investigate the effect of the curvature of the working surface of the cathode on the shape of the electron beam, which is generated when the cathode is bombarded with positive working gas ions, three cathodes were manufactured with three different radii of curvature of the polished working surface. The parameters of the electron beam focusing coil for the selected value of current and voltage have been developed, which determine the size of the coil made of non-magnetic material (in our case, pure aluminum). Three design options for the scanning system are considered: two systems with ferrite cores and one without a core based on a saddle coil. The analysis of the possibility of implementing the considered options showed that the third option does not meet the requirements regarding the geometric dimensions of the scanner. The option with a ferrite core in the form of a four-pole is difficult to implement due to the high cost of manufacturing the core. The most acceptable option is a scanning system with a ferrite core in the form of a torus. A high-speed power supply for the electromagnetic scanner coil was developed to move the electron beam along a given trajectory. Obtaining a low-power electron beam with a small focal spot by optimizing the geometric parameters of the electrode system and controlling it is a difficult task, but its solution will significantly affect the development of additive technology and increase its competitiveness. Product Description popup.authors Avtonomov Heorhii A. Demchyshyn Anatolii A. Demchyshyn Anatolii V. Kulak Leonid D. Michenko Valerii A. Firstov Serhii O. popup.nrat_date 2025-05-08 Close