Desarrollo de un fundente para recargue por SAW con el empleo de escorias de soldadura
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Fecha
2014-07-20
Autores
Moya Hayle, Irina
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Editor
Universidad Central "Marta Abreu" de Las Villas
Resumen
En el trabajo se aborda el desarrollo de un fundente para recargue duro por Soldadura con Arco
Sumergido a partir de escorias generadas durante el proceso de soldadura. Para el estudio se
realiza un diseño experimental de mezclas de tipo McLean Anderson, donde se varía la composición
del fundente (se varia el contenido de FeCr, FeMn y de Matriz (80%Escoria +10%Caliza
+10%Fluorita) para obtener como variable respuesta las propiedades de los depósitos (contenidos
de cromo, de manganeso y de carbono; así como dureza). Son obtenidos los fundentes para cada
punto experimental y con estos son obtenidos depósitos sobre chapa en varias pasadas. De los depósitos son extraídas probetas para análisis químico, metalográfico y de desgaste. Es determinada la composición química de los depósitos, la dilución a partir de las macrografías, la microestructura y la dureza. Finalmente son obtenidos los modelos de regresión que permiten analizar la tendencia del efecto de las variables de entrada sobre las respuestas y se realiza el análisis de la relación de la composición de los depósitos con la microestructura y la dureza.
At work the development of a flux for hardfacing addressed by Submerged Arc Wire from slag generated during the welding process. To study an experimental design of mixtures McLean Anderson type is performed, wherein the composition of the flux is varied (the content is various FeCr, FeMn and Matrix (80% +10% Limestone Slag Fluorite +10%) for as response variable properties of the deposits (contents of chromium, manganese and carbon, and hardness). Are obtained fluxes for each experimental point and these are obtained deposits on metal in several passes from deposits are extracted specimens for chemical, metallographic analysis and wear’s determined the chemical composition of the deposits, dilution from the macrographs, microstructure and hardness. Were finally obtained regression models that analyze the trend of the effect of the input variables the responses and the analysis of the relationship of the composition of the deposits to the microstructure and hardness is made.
At work the development of a flux for hardfacing addressed by Submerged Arc Wire from slag generated during the welding process. To study an experimental design of mixtures McLean Anderson type is performed, wherein the composition of the flux is varied (the content is various FeCr, FeMn and Matrix (80% +10% Limestone Slag Fluorite +10%) for as response variable properties of the deposits (contents of chromium, manganese and carbon, and hardness). Are obtained fluxes for each experimental point and these are obtained deposits on metal in several passes from deposits are extracted specimens for chemical, metallographic analysis and wear’s determined the chemical composition of the deposits, dilution from the macrographs, microstructure and hardness. Were finally obtained regression models that analyze the trend of the effect of the input variables the responses and the analysis of the relationship of the composition of the deposits to the microstructure and hardness is made.
Descripción
Palabras clave
Soldadura con Arco Sumergido, Fundente, Recargue por SAW, Welding, Submerged Arc, Flux