2019 №07 (05) DOI of Article
2019 №07 (07)

Automatic Welding 2019 #07
Avtomaticheskaya Svarka (Automatic Welding), #7, 2019, pp. 33-37

Influence of the composition of electrode coating binder on toxicity of welding fumes

O.G. Levchenko1, A.O. Lukianenko2, O.V. Demetskaya3

1National Technical University of Ukraine «Igor Sikorsky KPI». 37 Pobedy Ave., 03056, Kyiv, Ukraine. E-mail: levchenko.opcb@ukr.net
2E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine.  E-mail: office@paton.kiev.ua
3Kyiv International University. 49 Lvivska Str., 03179, Kyiv, Ukraine

Results of sanitary-hygienic assessment of coated electrodes for welding high-alloyed chromium-nickel steels were used to study the influence of the composition of electrode coating binder on toxicity of aerosols, 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 values 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 initial 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, 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 Tabl., 4 Fig.
Keywords: coated electrodes, welding fumes, hexavalent chromium, cytotoxicity index

Received: 22.01.2019
Published: 10.06.2019


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