Procedimiento de soldadura y su efecto en la calidad de estructuras soldadas en referencia al código AASHTO/AWS D1.5M/D1.5:2020
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Date
2024-07
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Universidad Nacional de Trujillo
Abstract
En los proyectos de soldadura para la construcción de puentes la mano de obra calificada es de
suma importancia para contribuir al para el éxito del proyecto. La presente propuesta de
investigación tiene como objetivo evaluar el efecto del proceso de soldadura y cambio en la
posición de soldeo en las propiedades mecánicas y sanidad de la junta de acero ASTM A709
Grado 50 de 25 mm de espesor. Tres cupones de prueba fueron preparados para soldadura de
ranura juntas a tope con proceso por arco sumergido posición plana y proceso por arco tubular
con protección gaseosa para posiciones vertical ascendente y sobre cabeza. Los materiales de
aporte y parámetros de soldeo fueron los recomendados por el fabricante. Los resultados producto
de los ensayos en los cupones de prueba mostraron propiedades mecánicas que, si bien difieren
significativamente conforme vario la posición de soldeo por efecto de los cambios
microestructurales, sin embargo, cumplen con los requerimientos de calidad mediante ensayos
mecánicos y pruebas de sanidad establecidos en el código de soldadura para puentes AWS
D1.5M/D1.5:2020, para calificación de procedimientos de soldadura y soldadores.
In welding projects for the construction of bridges, qualified labor is of utmost importance to contribute to the success of the project. The objective of this research proposal is to evaluate the effect of the welding process and change in the welding position on the mechanical properties and health of the 25 mm thick ASTM A709 Grade 50 steel joint. Three test coupons were prepared for groove welding butt joints with flat position submerged arc process and gas shielded tubular arc process for upright and overhead positions. The filler materials and welding parameters were those recommended by the manufacturer. The results of the tests on the test coupons showed mechanical properties that, although they differ significantly as the welding position varies due to the effect of microstructural changes, however, they meet the quality requirements through established mechanical tests and health tests. in the AWS D1.5M/D1.5:2020 bridge welding code, for qualification of welding procedures and welders.
In welding projects for the construction of bridges, qualified labor is of utmost importance to contribute to the success of the project. The objective of this research proposal is to evaluate the effect of the welding process and change in the welding position on the mechanical properties and health of the 25 mm thick ASTM A709 Grade 50 steel joint. Three test coupons were prepared for groove welding butt joints with flat position submerged arc process and gas shielded tubular arc process for upright and overhead positions. The filler materials and welding parameters were those recommended by the manufacturer. The results of the tests on the test coupons showed mechanical properties that, although they differ significantly as the welding position varies due to the effect of microstructural changes, however, they meet the quality requirements through established mechanical tests and health tests. in the AWS D1.5M/D1.5:2020 bridge welding code, for qualification of welding procedures and welders.
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TECHNOLOGY::Chemical engineering::Metallurgical process and manufacturing engineering::Metallurgical process engineering