Dmytro Kovalchuk

20140506-18
Recent Progress in Development of Gas-Discharge Electron Beam Guns Providing Extension of Their Technological Capabilities
Vitalii G. Melnyk, Ihor. V. Melnyk, Borys A. Tugai, Dmytro V. Kovalchuk

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Long operating experience of gas-discharge electron beam guns in different technological processes has allowed to investigate their special behavior features and to determine what must be improved in their design for providing ...  read more

20140506-17
Modern Electron Beam Technologies and Equipment for Melting of Metals and Alloys, Deposition of Protective Coatings, Production of Composites Condensed from Vapor Phase and Powders
M. I. Grechanyuk, Andrey G. Melnyk, Igor M. Grechanyuk, Vitalii G. Melnyk, Dmytro V. Kovalchuk

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Report is dedicated to the last achievements of Scientific and Production Enterprise Eltechmash in development of laboratory and industrial equipment for electron beam melting and physical vapor deposition of different materials. ...  read more

20180708-12
Dispersed and layered volumetric nanocrystalline materials based on copper and molybdenum condensed from the vapor phase
Nikolai Hrechaniuk, Vera Hrechaniuk, Elena Khomenko, Dmytro Kovalchuk

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The paper presents features of structure formation and phase composition on copper and molybdenum based composite materials, condensed from the vapor phase. Three types of condensed composite materials with thicknesses from ...  read more

20180304-03
Advanced technical and technological solutions for additive manufacturing by xBeam 3D metal printing
Dmytro Kovalchuk, Vitalii Melnyk, Ihor Melnyk, Borys Tugai

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The electron beam additive manufacturing technology named xBeam 3D Metal Printing was presented at EBT-2016 Conference in Varna in summer of 2016. It was announced an expectation that this new technology can solve the most ...  read more

20160506-34
The new condensed from vapor phase composite materials based on copper and their applications
Nikolay I. Grechanyuk, Vera G. Grechanyuk, Elena V. Khomenko, Igor N. Grechanyuk, Victor G. Zatovskii , Dmytro Kovalchuk

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The paper presents the method of electron beam vacuum evaporation and condensation for the most promising technologies of manufacturing modern composite materials, used in welding and switching equipment. This method currently ...  read more

20160506-06
Prospects of application of gas-discharge electron beam guns in additive manufacturing
Dmytro Kovalchuk, Vitalii Melnyk, Ihor Melnyk, Borys Tugai

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Long-term experience of application of gas-discharge electron beam guns in different technological processes such as melting, refining, coating, welding and others has proved their technical and economic efficiency both in ...  read more