A technique to determine processing parameters of electron beams in welding electron guns

Goncharov, A. L.; Драгунов, В. К.; Щербаков, А. В.; Terent’ev, E. V.; Portnov, M. A.; Chulkov, I. S.

doi:10.3103/s1068371215100077

Cited by 8 publications

(2 citation statements)

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“…In order to fix the electron beam welding process in the visible range of the spectrum, high-speed video shooting was used, conducted using a high-speed camera [2,7].…”

Section: Methodsmentioning

confidence: 99%

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Investigation of the effect of electron beam parameters on the characteristics of the steam-gas channel during welding of nickel and titanium alloys

Goncharov

Слива²,

Chulkov³

et al. 2022

J. Phys.: Conf. Ser.

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The article presents the developed technique of high-speed video recording of the combined-cycle gas channel and subsequent frame processing to obtain the dimensional characteristics of the combined-cycle gas channel. On the basis of this technique, dependences of the width of the weld at different depths were obtained depending on the current and welding speed. A pattern of dimensional characteristics of the steam-gas channel depending on the running energy and the dependence of the frequency of collapse of the steam-gas channel on the electron beam current at a constant welding speed of 40 m/h by the example of nickel and titanium alloys was revealed.

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“…In order to fix the electron beam welding process in the visible range of the spectrum, high-speed video shooting was used, conducted using a high-speed camera [2,7].…”

Section: Methodsmentioning

confidence: 99%

“…However, when using EBW, specific defects occur at the root of the seam, such as penetration peaks and voids. The formation of these voids is often explained by hydrodynamic phenomena in the welding bath, which lead to the periodic collapse of the neck of the steam-gas channel [1][2].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the effect of electron beam parameters on the characteristics of the steam-gas channel during welding of nickel and titanium alloys

Goncharov

Слива²,

Chulkov³

et al. 2022

J. Phys.: Conf. Ser.

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Electron beam welding

Reisgen

Gach

2021

Advanced Joining Processes

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Study of the operating modes of the electrostatic lens of the welding electron gun

Titarev

Goncharov

Kharitonov

et al. 2021

J. Phys.: Conf. Ser.

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The paper presents the results of a study of the operating modes of a technological electron gun used in installations for electron beam welding. The design of an electron gun, which is part of the ELA-15I power complex, is considered, and the results of modeling the accelerating gap for a new design gun with an accelerating voltage of 120 kV are presented. The current-voltage characteristics of the gun operation were experimentally obtained at different temperatures of the main LaB6 cathode. For this, the beam current was recorded at different values of the control electrode potential. A mathematical model of the accelerating gap was implemented, which makes it possible to analyze the shape of the electron beam in the region of the first lens. Using a mathematical model, the shapes of the electron beam were calculated for various operating modes of the gun, and the characteristic transverse size of the beam in the crossover was determined. The beam diameter and the angle of convergence in the area of focusing the beam on the product were determined experimentally. Conclusions were made about the equality of the crossover diameters of the full-scale and mathematical models, as well as about the sufficient coincidence of the experimental and calculated volt-ampere characteristics. The design of the accelerating gap of the ELA-15 gun was optimized with an increase in the accelerating voltage from 60 kV to 120 kV. The optimization results are shown for the original and modified design in the form of a comparison of the patterns of the distribution of the electrostatic field strength and a comparison of the current-voltage characteristics.

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A technique to determine processing parameters of electron beams in welding electron guns

Cited by 8 publications

References 0 publications

Investigation of the effect of electron beam parameters on the characteristics of the steam-gas channel during welding of nickel and titanium alloys

Investigation of the effect of electron beam parameters on the characteristics of the steam-gas channel during welding of nickel and titanium alloys

Electron beam welding

Study of the operating modes of the electrostatic lens of the welding electron gun

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