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Dimentional welding control using vibratory stress relief
Control dimensional de uniones soldadas utilizando tratamiento de alivio de tensiones mediante vibraciones
DOI:
https://doi.org/10.15446/ing.investig.v28n1.14864Keywords:
residual stress, vibratory stress relief, deformation, arc welding (en)esfuerzos residuales, alivio de tensiones con vibraciones, deformación o distorsión, soldadura por arco (es)
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The effectiveness of applying vibratory stress relief to controlling deformations due to internal stresses on plates produced by welding was evaluated in this research. The magnitude of distortion produced in three groups of specimens which had been treated with vibration during and after welding was also evaluated. The specimens consisted of austenitic stainless steel plates which tend to become deformed due to high expansion and shrinkage coefficient and low thermal conductivity during arc welding. Their deformation was quantified by measuring the vertical distance which the end of the plate moved after the welding bead was applied. The magnitude of stress produced by the effect of vibration was measured too. The results revealed a clear reduction of the final deformation in treated specimens compared to non-treated ones. It was also found that the magnitude of stress produced during vibration had no important effect on the treatment’s effectiveness.
En este estudio se evaluó la efectividad de la aplicación de los procesos vibratorios sobre el control de
deformaciones causadas por las tensiones internas en platinas debido a un proceso de soldadura. Se evaluó la magnitud de la distorsión producida en tres series de especímenes tratándolas con vibraciones durante y después del procedimiento de soldadura. Los especímenes consistieron de platinas de acero inoxidable austenítico, los cuales tienen gran tendencia a la deformación debido a un alto coeficiente de dilatación y contracción y a una baja conductividad térmica durante los procesos de soldadura por arco. La deformación fue cuantificada midiendo la distancia que se levanta el extremo de la platina después de aplicar un cordón de soldadura. Se midió también la magnitud de los esfuerzos generados por efecto de la vibración de una platina. Los resultados mostraron una evidente reducción de la deformación final en las platinas tratadas con respecto a las no tratadas. Se encontró además que la efectividad del tratamiento con vibraciones no es afectada considerablemente por la magnitud del esfuerzo generado durante la vibración.
References
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Copyright (c) 2008 Fernando Casanova García, Duván Henao Saldarriaga, Fernando Franco Arenas
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