TPWJ, 2019, #7, 25-28 pages
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #7, 2019 (July)
Influence of the composition of electrode coating binder on toxicity of welding fumes
O.G. Levchenko1, A.O. Lukyanenko2 and O.V. Demetskaya3
National Technical University of Ukraine «Igor Sikorsky KPI»
37 Pobedy Ave., 03056, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
Kyiv International University
49 Lvivska Str., 03179, Kyiv, Ukraine
Results of sanitary-hygienic evaluation of coated electrodes for welding high-alloyed chromium-nickel steels were used to study the influence of the composition of electrode coating binder on the toxicity of fumes, which form at application of these electrodes. Express-method of determination of cytotoxicity, levels of evolution and chemical composition of welding fumes, as well as their calculated hygienic indices in accordance with international standard DSTU ISO 15011-4:2008 were applied for this purpose. It is shown that in order to develop new grades of welding electrodes with improved hygienic characteristics, it is reasonable to have not only the data of primary sanitary-hygienic evaluation, but also the results of biological studies of the toxicity of welding fumes. It is found that application in electrode coating of a binder based on pure lithium or lithium-sodium-potassium liquid glass instead of potassium-sodium one, enables reducing the level of welding fume evolution into the air, its content of highly toxic hexavalent chromium, and lowering its general toxicity due to that. 14 Ref., 3 Tables, 4 Figures.
Keywords: coated electrodes, welding fumes, hexavalent chromium, cytotoxicity index
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