| 2000 №08 (11) | 2000 №08 (13) |
The Paton Welding Journal, 2000, #8, 47-49 pages
Formation of aerosols in CO2 modulated-current welding
O.G. Levchenko
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
It is shown that the method of a modulated-current welding makes it possible to decrease the intensity of evolution of a hard constituent of welding aerosols (HCWA) and content of manganese in it as compared with welding at a continuous current. At the modulated-current welding these characteristics are determined not only by a mean power of the arc, but also by a frequency of impulses.
Keywords: welding, modulated current, welding aerosols, intensity of HCWA evolution
References
1. Levchenko, O.G. (1998) Technological methods of reducing the level of formation of welding aerosol. Review. Svarochnoye Proizvodstvo, 3, 32 - 38.2. Mirlin, G.A., Ageev, V.I., Barashev, V.V. (1980) Arc welding with a modulated current. Ibid., 8, 16 - 17.
3. Golovatyuk, A.P., Sidoruk, V.S., Levchenko, O.G. et al. (1985) Intensity of formation of aerosols in manual welding with a modulated current. Avtomaticheskaya Svarka, 2, 39 - 40.
4. (1980) MR No.1924-78. Hygienic assessment of welding consumables and methods of welding, surfacing and cutting of metals. Moscow: Minzdrav SSSR.
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6. Levchenko, O.G. (1986) Effect of composition of shielding gas and welding conditions of gross evolutions of welding aerosol. Avtomaticheskaya Svarka, 1, 72 - 74.
7. Podgaetsky, V.V., Golovatyuk, A.P., Levchenko, O.G. (1989) About mechanism of formation of welding aerosol and prediction of its composition in CO2 welding. Ibid., 8, 9 – 12.
