2015 №12 (06) DOI of Article
2015 №12 (08)

The Paton Welding Journal 2015 #12
TPWJ, 2015, #12, 34-38 pages
Development of new emission systems of electron beam guns for process operations under space conditions

Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                      0957-798X (print)
Issue                       № 12, 2015 (December)
Pages                      34-38
Yu.V. Zubchenko And E.G. Ternovoj
E.O. Paton Electric Welding Institute, NASU. 11 Bozhenko Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua
Development of a new system, in contrast to diode emission systems with filamentary cathode being earlier applied in space guns, is based on triode emission system with cathode preheating by electron bombardment. New emission system is designed using a procedure based on simultaneous solution of problems of analysis and synthesis applying an apparatus for trajectory analysis of electron beams. The proposed emission system is designed in two variants, i.e. manual and automated types of electron beam tools. An electron beam with phase characteristic close to linear one is formed in each of calculated variants, that provides for high specific power of the beam in place of welding (to 9 kW/mm2) at total beam capacity to 2.5 kW and, as a result, allows carrying out welding and cutting of aluminum and titanium alloys, as well as stainless steels, of up to 5 mm thickness in continuous and pulsed modes under open space conditions. 10 Ref., 1 Table, 7 Figures.
Keywords: emission system, electron beam, triode system, crossover, focal plane, trajectory analysis, perveance, operating distance, manual and automated tool, welding, cutting, brazing, heating, aluminum and titanium alloys, stainless steels
Received:                16.04.15
Published:               21.01.16
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