Improvement the root stability of thick welds during electron beam welding
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU129745" target="_blank" >RIV/00216305:26210/18:PU129745 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Improvement the root stability of thick welds during electron beam welding
Original language description
Electron beam (EB) welding of thick materials is not an easy task and finding the correct welding parameters and conditions is one of the crucial factors especially when the quality of weld root is required. The undesirable features of an electron beam weld can lead to premature failure or reduces the effectiveness of the resulting components (for example impellers). In attempts to understand how these defects are formed, the formation of EB cavity is primary importance. The greatest significance is attributed to the cavity oscillation in size and shape due to the rapid pressure and temperature changes which occurs during formation of EB cavity. These dynamic behaviors of molten metal during EBW enable creation of liquid metal protrusions in cavity instabilities - spiking. In the preset paper the initial results of several steel and titanium plates with different thickness welded without filler metal are presented. During the welding various approaches have been verified to eliminating the spiking. For spiking elimination the modification of weld joint configuration was tested, using of solder, using of background material and modification of EB welding process parameters. The obtained results are complemented by microstructure analysis and by evaluation of the quality and appearance of the weld root.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
METAL 2018 - Conference Proceedings
ISBN
978-80-87294-84-0
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
700-705
Publisher name
Tanger Ltd.
Place of publication
Keltickova 62, 710 00 Ostrava, Czech Republic, E
Event location
Brno
Event date
May 23, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000461832200108