EFFECT OF WELDING POSITION ON THE MECHANICAL PERFORMANCE OF MANUAL METAL ARC WELDELD JOINTS VIA ANALYSIS OF VARIANCE

Rui Rosa de Morais Júnior, Marcelo Xavier Guterres, Alexandre Ferreira Galio, Henara Lillian Costa

Resumo


Positional welding is a common challenge in many manufacturing practices and the welding position can affect the mechanical properties of welded joints during manual metal arc welding. This work uses tensile tests to investigate the mechanical properties of welded joints, aiming to test the hypothesis of the influence of welding position on tensile strength, total displacement before rupture and plastic displacement before rupture. This hypothesis was tested for three different coated electrodes (AWS E6010, AWS E6013 and AWS E7018) and three welding positions (1G, 3G and 4G), accounting for nine types of specimens. For each type of specimen, ten repetitions were carried out. Analysis of Variance (ANOVA) was used to test the hypotheses. The welded joints using the welding position 1G presented higher rupture load and larger total displacement before rupture than the other positions.

Palavras-chave


welding. manual metal arc welding. tensile test. ANOVA.

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DOI: http://dx.doi.org/10.21575/25254782rmetg2019vol4n6717

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Direitos autorais 2020 Rui Rosa de Morais Júnior, Marcelo Xavier Guterres, Alexandre Ferreira Galio, Henara Lillian Costa

Revista Mundi Engenharia, Tecnologia e Gestão ISSN 2525-4782

Qualis: B4 - Interdisciplinar, B5 - Geografia, B5 - Administração Pública e de Empresas, Ciências Contábeis e Turismo, B5 - Comunicação e Informação, B5 - Engenharias III