| 2004 №06 (08) | 2004 №06 (10) |
The Paton Welding Journal, 2004, #6, 41-43 pages
Hydration of fluxes with a locally-changed chemical composition of grains
V.G. Kuzmenko1, V.I. Guzej2
1E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.2Kiev City Administration, Ukraine
Abstract
Investigation results on peculiarities of hydration of some grades of welding fluxes, e.g. fused ones and those subjected to preliminary thermal fluorination treatment in a gaseous environment containing HF, are presented. Formation of a low-hydrated layer on the surface of flux grains leads to a dramatic decrease in their susceptibility to moisture absorption. This treatment is especially efficient for fluxes of the basic type and those that have a pumiceous grain structure
Keywords: electric arc welding, fluxes, hydration, fluori¬nation treatment
References
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