Estudio comparativo del fundente fundido CIS-F10 granulado en agua y con aire
Fecha
2010-07-20
Autores
Álvarez Valdéz, Marilene
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Universidad Central "Marta Abreu" de Las Villas
Resumen
En el presente trabajo se realiza un estudio de la influencia de la forma de los granos del fundente fundido CIS-F10, tanto granulado con aire como en agua, sobre la geometría de los cordones de soldadura y sus propiedades. Para ello se realiza un análisis morfológico de los granos del fundente CIS-F10, sus densidades, la fluidez que presentan durante su apilamiento, las diferencias entre la cantidad de aire intergranular, durante su deposición sobre las piezas a soldar y su comportamiento higroscópico. La aplicación de estos procedimientos de estudio de materiales evidencia que el fundente granulado con aire (partículas esféricas constituyen el 79,2 %) produce una diferencia relativa superior de la fluidez (34 %) y del ángulo de talud (28,8 %), presentando un menor (28,2 %) volumen relativo de aire intergranular, respecto al fundente granulado en agua, con una disminución
de la pendiente de crecimiento de la curva de humectación. Estos aspectos producen una mayor penetración (8 %) de soldadura y un menor ancho medio (17 %) de la zona de afectada térmicamente, aunque no se evidencian diferencias en las propiedades metalográficas, ni mecánicas (< 1 %), en las uniones soldadas. La escoria formada en ambos casos es de configuración geométrica constante (espesores 4 mm y anchos 25 mm) con una razón de consumo de fundente de 0,64.
Presently work is carried out a study of the fused flux CIS-F10 grain form influence, so much granulated with air as in water, about the geometry of the welding job and its properties. For that is carried out a grains morphological analysis, its densities, its piling up fluency, its behavior hygroscopic and its differences among the quantity of intergraining air, during its deposition on the pieces to be weld. The application of these materials study procedures evidence that the air granulated flux (with 79,2 % spherical particles constitute) produces a superior difference relative of the fluency (34 %) and a bank angle (28,8 %), presenting a minor (28,2 %) relative volume of intergraining air, regarding the water granulated flux, with a decrease of the growth slope of the humectation curve. These aspects produce a bigger penetration (8 %) of welding and a smaller half width (17 %) of the zone thermally affected, although differences are not evidenced in the metallographic properties, neither mechanical (< 1 %), in the welded joint. The slag formed in both cases is of constant geometric configuration (thickness 4 mm and wide 25 mm) with an 0,64 index of consumption.
Presently work is carried out a study of the fused flux CIS-F10 grain form influence, so much granulated with air as in water, about the geometry of the welding job and its properties. For that is carried out a grains morphological analysis, its densities, its piling up fluency, its behavior hygroscopic and its differences among the quantity of intergraining air, during its deposition on the pieces to be weld. The application of these materials study procedures evidence that the air granulated flux (with 79,2 % spherical particles constitute) produces a superior difference relative of the fluency (34 %) and a bank angle (28,8 %), presenting a minor (28,2 %) relative volume of intergraining air, regarding the water granulated flux, with a decrease of the growth slope of the humectation curve. These aspects produce a bigger penetration (8 %) of welding and a smaller half width (17 %) of the zone thermally affected, although differences are not evidenced in the metallographic properties, neither mechanical (< 1 %), in the welded joint. The slag formed in both cases is of constant geometric configuration (thickness 4 mm and wide 25 mm) with an 0,64 index of consumption.
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Palabras clave
Fundente Fundido, Soldadura con Arco Sumergido, Métodos de Granulación, Welding Flux, Submerged Arc Welding, Granulating Flux Method