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      Cuantificación de la contaminación del gas de protección en procesos de soldadura con arco eléctrico por medio de mediciones de oxígeno en la superficie del material base Translated title: Quantification of contamination of the shielding gas in arc welding processes through measurement of oxygen on the surface of the base material

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          Translated abstract

          A metodologia apresentada neste trabalho se baseia em medições do teor de oxigênio na superfície do metal base, possibilitando assim, uma avaliação quantitativa da contaminação do gás de proteção. Os gases utilizados nos processos de soldagem definem as características do arco e protegem a poça de soldagem. A contaminação do gás, por exemplo, com o ar do meio ambiente, prejudica as propriedades da união soldada. A contaminação do gás de proteção não é somente dependente da qualidade do gás utilizado, como também tem que ser considerado os componentes contidos na tocha. Até agora, o nível da contaminação do gás produzido pela tocha tem sido analisado somente de forma empírica, avaliando a qualidade e forma do cordão de solda. A medição do oxigênio na superfície do metal de base é um método simples e preciso para analisar o nível de contaminação do gás de proteção. Este procedimento permite uma avaliação quantitativa, inclusive na presença do arco. No contexto deste trabalho se apresentará por meio de exemplos em tochas TIG e MIG/MAG as possibilidades da utilização desta metodologia para o desenvolvimento e análise de processos de soldagem a arco.

          Translated abstract

          The method presented in this paper is based on the measurement of oxygen on the surface of the base metal to enable a quantitative assessment of the contamination in the shielding gas. The gas used in arc processes affected arc properties and simultaneously protected the welding pool. The contamination of the shielding gases, e.g. with atmospheric air, damages the properties of the weld joint. The contamination in the shielding gas is not only dependent on the purity of the utilized gas, but also on the components of the welding torch. The level of contamination in the gas produced by the torch had been analyzed so far only by empirical evaluation of the quality and appearance of the welding seam. The measurement of oxygen on the surface of the base metal is a simple and accurate method to analyze the level of contamination in the shielding gas. This method allows a quantitative assessment even in the presence of the arc. This work shows the possibilities of using this method for the development and analysis of arc welding processes using the example of TIG and MIG / MAG torches.

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          Most cited references21

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          Sensitivity of Marangoni convection and weld shape variations to welding parameters in O2?Ar shielded GTA welding

          S. Lu (2004)
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            Metallurgy of Welding

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              • Record: found
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              titanium welding technology, Nippon Steel

              T. OTANI (2007)
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                Author and article information

                Journal
                si
                Soldagem & Inspeção
                Soldag. insp.
                Associação Brasileira de Soldagem (São Paulo, SP, Brazil )
                0104-9224
                1980-6973
                September 2012
                : 17
                : 3
                : 186-191
                Affiliations
                [01] Duisburg orgnameGSI mbH orgdiv1Niederlassung SLV Alemania fuentes@ 123456gsi-slv.de
                [02] orgnameUniversidad Técnica de Dresde Alemania
                Article
                S0104-92242012000300002 S0104-9224(12)01700302
                10.1590/S0104-92242012000300002
                5fbb5d77-1055-4533-bd6e-60cd42e9b863

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 15 May 2012
                : 21 August 2012
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 6
                Product

                SciELO Brazil


                contaminação,Arco,Arc,gás de proteção,shielding gas,contamination,oxigênio,oxygen,torch,tocha

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