Volume 57

20220508-full
Issue 5-8, 2022

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 57. No 5-8/2022
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20220508-full

C O N T E N T S

Special issue (second volume): scientific papers from 14-th International conference on Electron Beam Technologies ...  read more

20220508-01
Laser heated cathodes for electron beam welding applications
Colin Ribton, Paul Plumb

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Electron guns for processing applications typically use a thermionic cathode as the source of electrons, where the cathode is a resistively heated refractory metal ribbon. In order to keep the heat input to the gun reasonably ...  read more

20220508-02
Demagnetization of thick section steels for electron beam welding
Colin Ribton

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High power electron beam welding can be applied to structures such as pressure vessels with wall thicknesses of up to 200 mm. Such applications often make use of steels that exhibit ferromagnetic properties. If the work pieces ...  read more

20220508-03
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

20220508-04
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

20220508-05
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

Issue 3-4, 2022

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 57. No 3-4/2022
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20220304-full

C O N T E N T S

Special issue (first volume): scientific papers from 14-th International conference on Electron Beam Technologies ...  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

Effect of the conductivity of the petri dish placed on the electrode on the surface layer of the spores in the PBII method
Shoya Umemoto, Koji Kakugawa, Kenta Nosaki, Takumi, Noda Takeshi Tanaka, Katia Vutova

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Plasma-based ion implantation (PBII) method is a technique that allows uniform ion implantation to a sample by applying a negative voltage to the model to draw and accelerate ions in the ion sheath existing around the piece. ...  read more