Repository BNTU - Browsing by Author "Koval, V. A."

Now showing items 1-3 of 3

Data Sets Formation on the Physical Properties of Oxide Scale Components for Theoretical Assessment of Efficiency Parameters of Laser Cleaning of Carbon Steels and Related Processes

Devoino, O. G.; Gorbunov, A. V.; Lapkovsky, A. S.; Lutsko, N. I.; Shpackevitch, D. A.; Gorbunova, V. A.; Koval, V. A. (БНТУ, 2024)

There is a need in machine-building industries nowadays to automate technologies, in particular, laser ones, to remove surface oxide layers – mill scale, rust – from steel products/pieces in order to improve the energy effectiveness of processing. Herewith, a theoretical assessment method for the intensity of heating of the oxide layer and the phase transition in it can be used ...

2024-06-05
Investigation of Upgraded Technology for Plasma Spraying of Bronze Powder Using the Combined Process with Hydrocarbon Additions

Devoino, O. G.; Gorbunov, A. V.; Chenchong, Wang; Volodko, A. S.; Polyakov, A. N.; Gorbunova, V. A.; Seniut, V. T.; Kovaleva, S. A.; Koval, V. A. (БНТУ, 2023)

The object of the research is thermal spray process for the formation of metal coating from bronze powder in plasma-fuel variant, using direct current (DC) electric arc plasma torch, on steel samples. The aim of the work was to investigate and develop the technology for plasma-fuel spraying of functional coatings (for wear-resistant and antimicrobial applications) on machine-building ...

2023-04-18
Thermodynamic Estimation of the Parameters for the C–H–O–N–Me-Systems as Operating Fluid Simulants for New Processes of Powder Thermal Spraying and Spheroidizing

Gorbunov, A. V.; Devoino, O. G.; Gorbunova, V. A.; Yatskevitch, O. K.; Koval, V. A. (БНТУ, 2021)

Over the past few years, a group of new processes was developed for high-temperature, including plasma electric arc spraying (at ambient pressure) and spheroidizing of some ceramic and metal powder materials with the use of gaseous hydrocarbons in the heat carriers as well as with feeding of organic additions into a high-temperature jet, in particular, polymeric ones, to control ...

2021-10-06