Search academic texts

Information × Registration Number 0223U003698, 0121U109433 , R & D reports Title Research of the processes which accompanies simultaneous melt treatment of silumins by different types of currents, and definition of conditions and parameters of electromagnetic loading of melt which provides increase of quality indicators of cast metal popup.stage_title Head Tsurkin Volodymyr M., Кандидат технічних наук Registration Date 15-06-2023 Organization Institute of Impulse Processes and Technologies National Academy of Sciences of Ukraine popup.description2 The object of research is the formation processes of the superposition of electromagnetic fields (EMF) in the silumin melt and their influence on the final quality indicators of the cast metal. Research methods - for numerical analysis, finite element methods (FEM), integral equations, division of massive conductors into elementary cells (M-С) and analytical method are used in the work; physical experiment. For research, the concept of a numerical experiment was chosen, which is based on a system analysis in 2D/3D formats of multiphysical processes with simultaneous processing of the melt with different types of currents. Three modeling methods are applied, which are adapted to the conditions of the problem under investigation. The conditions were obtained by comparing the data of the verified results, under which a significantly non-homogeneous superposition of electromagnetic fields is formed in the melt and, as a result, a more effective thermoforce effect on the processing object. On the basis of these conditions, physical experiments were performed on the treatment of the liquid state of the AK7 alloy with alternating and pulsating currents at the same time. The obtained results proved the promisingness of the proposed method. Thus, compared to the control sample, the value of σv is increased by 13%, and the relative elongation is 1.5 times. In contrast to the action of one type of current, the presence of a relative narrowing at the level of 4.4% and a 3-fold decrease in the total value of the energy density used for processing was recorded. Product Description popup.authors Ivanov Artem Anatoliiovych Gumenenko Mykola K. Diogtev Yuriy N. Zhdanov Oleksandr O. Zaporozhets Yuriy M Kharitonova Tetіana H. Tsurkin Volodymyr M. Chestnykh Mykolo V. popup.nrat_date 2023-06-15 Close