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Prediction of electron beam welding spiking tendency [electronic resource].

Published
Livermore, Calif. : Lawrence Livermore Laboratory, 1978.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 33 : digital, PDF file
Additional Creators
Lawrence Livermore Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
On the basis of measured temperature distributions in electron beam welding cavities it is shown that the vapor pressure force dominates in the lower region and the surface tension in the upper region. The region where these two forces are approximately equal is unstable and the surface tension force causes inward flow of liquid metal which tends to form a projection. For a specific material this projection location was found to depend on cavity depth. By postulating that the formation of liquid metal projections at this location results in cavity instabilities, a physical model for predicting when spiking would occur was purposed. A procedure then developed for determining the spiking tendency for a specified material and set of weld parameters is described.
Report Numbers
E 1.99:ucrl-80724
E 1.99: conf-780406-2
conf-780406-2
ucrl-80724
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
02/01/1978.
"ucrl-80724"
" conf-780406-2"
59. AWS annual meeting, New Orleans, LA, USA, 3 Apr 1978.
Schauer, D.A.; Geidt, W.H.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14460492