Electron beam equipment

Optimization of electron beam welding of Ti-6Al-4V thin plates
Lilyana S. Koleva, Asya Lozeva, Elena G. Koleva

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In this paper the electron beam welding of Ti–6Al–4V thin plates is simulated by implementation of a moving linear heat source model. The simulation results are used for estimation of regression models for the dependencies ...  read more

Simulation of electron beam welding of Inconel 718 thin plates
Lilyana S. Koleva, Natalia Hristova, Elena G. Koleva

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In this paper the simulation of electron beam welding of Inconel 718 thin plates by a moving linear heat source is considered. Regression models for the molten pool geometry characteristics, depending on the electron beam ...  read more

Robust model-based multicriterial optimization strategies for electron beam welding of Steel 45
Elena G. Koleva, Lilyana S. Koleva

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In this paper an experimental study of the geometrical characteristics of the cross-sections of the thermally affected areas obtained by electron beam welding joints of carbon steel grade 45 is made. The thermally affected ...  read more

Development of an Electron beam probing device for beam analysis at the exit of a 90° Electron beam bending system for inside welding
Peter J. Oving, Samuel De Sousa

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The quality of EBWelds, realized by a 90° deflected Electron Beam, depends on operator defined parameters of the welding equipment, like gun voltage and current, beam centering, focus current(s), bending magnet current, welding ...  read more

Design and Simulation of 400-kW Sheet Beam Optics and Magnetic Field for DC and RF Power Sources
Atif Alvi, Munawar Iqbal, Faizan Elahi, Ghalib U. Islam

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We present the design, simulation and analysis of 400 kW sheet beam gun. The beam optics, beam envelop and the magnetic field of the gun is designed and then simulated in CST PS. 100% beam transmission is achieved at the target ...  read more

Fabrication of high performance carbon nanotube cold cathode electron beam (C-beam) for various devices
Hyeon Hee Yang, Hye In Lee, Jung Su Kang, Kyu Chang Park

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We fabricated high performance cold cathode electron beam with carbon nanotube (CNT) emitters. High performance cold cathode electron emitters show more than 150 mA electron emission current and long-time operational stability. ...  read more

A multi column lithography system for low and medium volume mask manufacturing
Viacheslav V. Kazmiruk, Ilya G. Kurganov, Alexander A. Podkopaev, Tatiana N. Savitskaja

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In the paper is presented multicolumn e-beam lithography (MCL) system intended generally for production of templates.

The system was designed in two versions: with Schottky emitter and LaB6/CeB6 emitter.

System with Schottky ...  read more

Trends in the development of cobalt production
Valeriya K. Kovacheva-Ninova, Georgi M. Savov, Vania Vassileva, Katia Vutova, Evgeni Petrov, Dobrin Petrov

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Cobalt, as one of the “critical” and “strategically important” metals, plays a key role in the contemporary development of the world’s industry. Cobalt has specialized applications where it is currently impossible ...  read more

35 years of experience in radiation technologies innovation at the ОАО “Public Enterprise “PODOL’SKKABEL” plant
Nikolay I. Gromov, Mikhail N. Gromov, Nikolay K. Kuksanov, Alexander I. Roikh, Rustam A. Salimov

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https://epluse.ceec.bg/wp-admin/poThe technology of cable insulation radiation modifying had a wide application in the industry. The use of such a technology provided the production of a wide range of cables, wires and heat ...  read more

Emittance – quantitative characteristic of welding beam quality
Elena Koleva, Georgi Mladenov, Volodya Dzharov, Dimitar Todotov, Marin Kerdjiev, Lilyana Koleva

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The management of the quality during electron beam welding directed to optimization of the process parameters is an important way to improve the use of the expensive equipment and to make the EBW process more efficient in consuming materials, time and energy.

 ...  read more