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Influence of shielding gases in the welding of metals

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Abstract

Shielding gases are of considerable significance in the protection of molten metal from atmospheric contamination during welding processes. These gases play an important role in a number of aspects of welding, including arc characteristics and the microstructure of weldments. Understanding of the influence of welding shielding gases on different materials is consequently important, and extensive studies and experiments have been performed by numerous researchers. Based on previous studies, the objective of the current study is to collate and summarize the most important findings and approaches of earlier research. This paper provides analysis of the influence of different combinations of process gases on welding of commonly used materials in manufacturing. The results presented can be used as guidelines to achieve higher quality and efficiency in welding practices. This study provides a good foundation for learning and creates enhanced awareness of shielding-gas-related issues among metal industry actors, permitting objective evaluation of welding productivity and quality.

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  1. Lappeenranta University of Technology, P. O. Box 20, 53851, Lappeenranta, Finland

    P. Kah & J. Martikainen

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  1. P. Kah
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Kah, P., Martikainen, J. Influence of shielding gases in the welding of metals. Int J Adv Manuf Technol 64, 1411–1421 (2013). https://doi.org/10.1007/s00170-012-4111-6

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  • DOI: https://doi.org/10.1007/s00170-012-4111-6

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