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2010 №07 (09) 2010 №07 (01)

The Paton Welding Journal 2010 #07
TPWJ, 2010, #7, 41-43 pages
 
CLEANING AND ACTIVATION OF WELDED SURFACES DURING EXPLOSION WELDING


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 7, 2010 (July)
Pages                      41-43
 
 
Authors
L.B. PERVUKHIN1, O.L. PERVUKHINA1 and S.Yu. BONDARENKO2

1Institute of Structural Macrokinetics and Materials Science, RAS, Chernogolovka, RF
2Altai State Agrarian University, Barnaul, RF
 
 
Abstract
Absence of the cumulative effect in explosion welding of large-sized samples and commercial size plates in the modes used in commercial production is experimentally proved. The mechanism of cleaning and activation of surfaces ahead of the contact point is proposed, based on the hypothesis of formation of thin layers of low-temperature plasma in the welding gap on the interface between the shock-compressed gas and surfaces being welded. It is suggested than formation of strong bonds between atoms of the joined metals in explosion welding should be regarded as a three-stage process.
 
 
Keywords: explosion welding, welded surface, oxides and contamination, cleaning, activation, cumulative jet, plasma flows, contact point, three-stage process
 
 
Received:                ??.??.??
Published:               28.07.10
 
 
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