The Comparative Analysis of Gas Emissions during Mechanized MAG Welding Using Cored Wires

Abstract:

The use of cored wire - shielding gas (gas mixture) pair, during mechanized Metal Active Gas - MAG welding, leads to the formation of gas emissions (CO₂, CO, NO_x, NO, O₃ etc) which is harmful for the welder’s health. The paper addresses the experimental method applied to establish the gas emissions developed during MAG welding when rutile cored wires (standard and low fume emissions) and metal powder cored wires (standard and low fume emissions) 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 experimental results have revealed that using rutilic cored wires and increasing the speed feed, an augmentation of CO (ppm), constant values of O₂ (%), insignificant constant values of NO (ppm) and NO_x (ppm) and absence of CO₂ (%) are achieved. Using metal cored wires and increasing the speed feed, increase of CO (ppm), insignificant values of NO (ppm) and NO_x (ppm), and constant values of CO₂ (%) and O₂ (%) are noticed.

• Periodical: Advanced Materials Research (Volume 814)
• Pages: 82-86
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.814.82
• Online since: September 2013
• Authors: Dănuţ Mihailescu, Octavian Frincu, Marius Corneliu Gheonea
• Keywords: Cored Wires, Gas Emissions, MAG Welding, Shielding Gas, Shielding Gas Mixture

References

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