The Comparative Analysis of the Concentration of Microparticles during Mechanized MAG Welding Using Cored Wires

Abstract:

Use of cored wire - shielding gas (gas mixture) pair, during mechanized MAG welding, causes the microparticles formation which is harmful for the welder’s health. The paper presents the experimental method for determining the concentration of the microparticles generated during MAG welding when rutile cored wires (standard and low fume emission) and metal powder cored wires (standard and low fume emission) are used. Carbon dioxide and the shielding gas mixture are investigated, too. Four types of cored wires were comparatively analysed, when three wire speed values were applied. The research of the microparticles concentration was conducted after each welding bead deposition, at the upper part of the welding enclosure, using MicroDust Pro particulate monitor. After each weld bead was deposited, the metal frame of the welding enclosure was removed, and, the fumes and gases, produced during the welding process, were eliminated through two fans, positioned inside and outside of the equipment. Using rutile cored wire with low fume emission, a decrease of microparticles concentration up to 30% is noticed in comparison with standard rutile cored wire. Using metal powders cored wire with low fume emission, the microparticles concentration is diminished with 12.5% comparing with standard metal powders cored wire.

• Periodical: Advanced Materials Research (Volume 814)
• Pages: 76-81
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.814.76
• Online since: September 2013
• Authors: Dănuţ Mihailescu, Octavian Frincu, Marius Corneliu Gheonea
• Keywords: Cored Wires, MAG Welding, Microparticles, Shielding Gas, Shielding Gas Mixture

References

[1] K. R. Carpenter, B. J. Monaghan, J. Norrish, Analysis of fume formation rate and fume particle composition for gas metal arc welding (GMAW) of plain carbon steel using different shielding gas compositions, ISI J. International, Vol. 49, No. 3, (2009), pg. 416-420.

DOI: 10.2355/isijinternational.49.416

[2] I. Pires, L. Quintino, R. M. Miranda, J. F. P. Gomes, Fume emissions during gas metal arc welding, toxicological & environmental chemistry, July - September 2006, 88(3), pg. 385-394.

DOI: 10.1080/02772240600720472

[3] J. Matusiak, B. Rams, Emission of dust and gases in tubular cored wire welding of steel, International Journal of Occupational Safety and Ergonomics (Jose), Vol. 9, No. 3, (2003), pg. 333-350.

DOI: 10.1080/10803548.2003.11076572

[4] H. Saito, J. Ojima, M. Takaya, T. Iwasaki, N. Hisanaga, S. Tanaka, H. Arito, Laboratory measurement of hazardous fumes and gases at a point corresponding to breathing zone of welder during a co2 arc welding, Industrial Health, (2000), pg. 69-78.

DOI: 10.2486/indhealth.38.69

[5] O. Frîncu, Cercetări teoretice şi experimentale privind sudarea mecanizată MAG pe suport ceramic folosind sârme tubulare ecologice (Theoretical and experimental research regarding the mechanized mag welding on ceramic backing using ecological cored wires), PhD thesis, Dunărea de Jos University of Galati, 2012.

DOI: 10.35219/annugalshipbuilding.2019.42.07

[6] O. Frîncu, Cercetări experimentale privind determinarea noxelor la sudarea MAG cu sârme tubulare standard şi cu emisii reduse de fum (Experimental research regarding analysis of noxes at mag welding using standard cored wires with low fume emission), Scientific research report II, Dunărea de Jos University of Galati, 2011.

DOI: 10.35219/annugalshipbuilding.2018.41.10