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Information × Registration Number 0223U001525, 0120U100112 , R & D reports Title Creation of scientific and technological foundations of casting processes for the production of bimetallic billets from iron-carbon alloys and colored materials based on copper using sequential or complex action of different energy sources popup.stage_title Head Lykhoshva Valeriy P., Доктор технічних наук Registration Date 30-01-2023 Organization Physico-technological institute of metals and alloys National academy of Sciences of Ukraine popup.description2  The object of research is bimetallic long rod products, processes of induction, laser, plasma and combined heating, methods of liquid-phase and liquid-solid phase joining of dissimilar materials. The purpose of the research is to develop the scientific and technological foundations of new hybrid processing methods in foundry processes for obtaining bimetallic blanks from iron-carbon and non-ferrous alloys using sequential or complex action of various energy sources. Research methods included metallographic, micro-X-ray spectroscopic analyses, mechanical tests, physical and mathematical modeling, natural experiments. A three-dimensional mathematical model and methodology for calculating the thermal and hydrodynamic state of the system "substrate – pouring device – die – crystallizer" in the process of heating the substrate, which moves at different speeds, and pouring liquid metal onto it, has been developed. The results of simulated modeling of temperature distribution under the action of electromagnetic field, laser radiation, plasma jet, as well as combined induction-laser and induction-plasma heating of a flat steel substrate are presented. It was established that the use of combined heating reduces the overall unevenness of the thermal field and provides treatment of the surface of the substrate in different areas without reflow, with partial or full reflow of the surface, which allows the use of different mechanisms of forming the connection between the substrate and the melt that is poured. The main regularities of the influence of the current in the inductor, the heating time of the steel substrate, the speed of its movement, the power of the laser radiation source or the plasma flow on the temperature change of the substrate have been determined. The dependences of the distribution of the heating front of the moving substrate on the geometric dimensions of the spot on its surface and the power of laser radiation during laser and induction-laser processing Product Description popup.authors Bossay Leonid M Glushkov Dmytro V Holubchyk Mariya I Karychkovsʹkyy Petro M Klymenko Lyudmyla M Kudryavchenko Mykola O Nadashkevich Roman S Pavlov Volodymyr V Pelikan Oleg A Reinthal Olena O Tymoshenko Andrii M. Сhaplyhina Liudmyla S. Shatrava Oleksandr P Shyryayev Viktor V Shmatko Oleksandr V popup.nrat_date 2023-01-30 Close