Volume 49, Issue 5-6, 2014

20140506-12
EBW of Stainless Steels and ODS Ferritic Steel
Petr Havlík, Pavel Šohaj, Jan Kouřil, Rudolf Foret, Ivo Dlouhý

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Dissimilar welds are the integral part of design in chemical, nuclear and energy industries. One of the most common combinations is the joints between ferritic, austenitic and martensitic steels. These joints provide many ...  read more

20140506-11
Electron Beam Welding of the Elements Module Blanket ITER
Electron Beam Welding of the Elements Module Blanket ITER

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The article is devoted to research of electron beam welding construction elements for International Thermonuclear Experimental Reactor in National Resesrch University “Mocow Power Engineering Institute”. It reviews design ...  read more

20140506-10
Mechanism of Onset of Keyhole Depth Fluctuations at Beam Welding Processes
Andrey A. Vasilyev, Vladimir A. Erofeev, Vladislav A. Sudnik

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The mechanisms of the beginning of depth oscillations of the vapour-gas channel are examined in beam welding. It is assumed that the reasons of the root peaks are the evaporation and condensation of metal vapour in the channel. ...  read more

20140506-09
Compensation of the Effect of Magnetic Fields on the Position of the Electron Beam in the Process of Electron Beam Welding
Valery D. Laptenok, Alexandra A. Druzhinina, Alexander V. Murygin, Yury N. Seregin

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The paper presents the approximate formulas for calculating the deflection angle and the misalignment of the electron beam from the optical axis of the electron gun caused by the action of magnetic fields during the electron ...  read more

20140506-08
Seam Tracking during Electron Beam Welding in Air
Vladimir Ya. Braverman, Vladimir S. Belozertsev, Valeriy V. Bogdanov, Nikolay V. Uspenskiy, Alexander E. Beniyash

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We study methods of beam positioning at the joint during Electron Beam Welding in air. Traditional methods of automatic beam positioning at the joint are unacceptable during the Electron Beam Welding in air because of the ...  read more

20140506-07
Electron Beam Characterization at Changes of EBW Process Parameters
Elena Koleva, Georgi Mladenov, Marin Kardjiev, Dimitar Todorov

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The characterization of the radial and the angular space distribution of particle trajectories (or respective current distributions) in powerful electron beams is an actual scientific and practical task, connected with the ...  read more

20140506-06
Accurate Diagnostic of Electron Beam Characteristics
U. Reisgen, S. Olschok, S. Ufer

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Diabeam – potential for online quality control in electron beam welding

Currently, several hundred machines for electron beam welding are applied in Europe, especially in the fields of research and development, aircraft ...  read more

20140506-05
Simulation Evaporation Processes in Electron Beam Welding
Dmitriy N. Trushnikov, Ekaterina S. Salomatova, Aleksey I. Tsaplin, Vladimir Ya. Belenkiy

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In this paper the method of experimental estimation of the temperature in a keyhole in electron beam welding is described on the basis of chemical elements concentration in the vapors above welding zone. The temperature of ...  read more

20140506-04
Control of Electron Beam Welding of Plates, Using Current of the Back Plate Side
Elena G. Koleva, Dmitriy N. Trushnikov, Vladimir Ya. Belenkiy, Georgi M. Mladenov

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The conventional systems for control of throughout welds used beam current, that is passing through the crater in the liquid metal to the space on the back side of sample. In this paper a collector, situated not opposite the ...  read more

20140506-03
Ion Current, Collected from Plasma above the Welding Zone during Electron Beam Welding
Dmitriy N. Trushnikov, Georgi M. Mladenov, Vladimir Ya.Belenkiy, Elena G. Koleva

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Measurements of fluctuations of the ion current, collected by the plasma, generated during electron beam welding and treatment of the acquired data with modern digital methods are executed. Through the application of Coherent ...  read more