Detail publikace

Improvement the root stability of thick welds during electron beam welding

HAVLÍK, P. KOUŘIL, J. DLOUHÝ, I.

Originální název

Improvement the root stability of thick welds during electron beam welding

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Electron beam welding, spiking, steel, titanium alloy, thick welds

Autoři

HAVLÍK, P.; KOUŘIL, J.; DLOUHÝ, I.

Vydáno

12. 11. 2018

Nakladatel

Tanger Ltd.

Místo

Keltickova 62, 710 00 Ostrava, Czech Republic, EU

ISBN

978-80-87294-84-0

Kniha

METAL 2018 - Conference Proceedings

Edice

1.

Strany od

700

Strany do

705

Strany počet

6

BibTex

@inproceedings{BUT151215,
  author="Petr {Havlík} and Jan {Kouřil} and Ivo {Dlouhý}",
  title="Improvement the root stability of thick welds during electron beam welding",
  booktitle="METAL 2018 - Conference Proceedings",
  year="2018",
  series="1.",
  pages="700--705",
  publisher="Tanger Ltd.",
  address="Keltickova 62, 710 00 Ostrava, Czech Republic, EU",
  isbn="978-80-87294-84-0"
}