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)
L.B. PERVUKHIN1, O.L. PERVUKHINA1 and S.Yu. BONDARENKO2
Institute of Structural Macrokinetics and Materials Science, RAS, Chernogolovka, RF
Altai State Agrarian University, Barnaul, RF
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.
explosion welding, welded surface, oxides and contamination, cleaning, activation, cumulative jet, plasma flows, contact point, three-stage process
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