Efecto del Espesor de la Chapa sobre la Microestructura del Depósito de Recargue mediante Proceso SMAW.

The establishment of hardfacing procedure by welding commonly goes through a previous evaluation of the consumable to be used, by means of the characterization tests of the welds; those results must be reproducible under practical conditions. The plate's sizes for hardfacing welds depositions determine, together with heat input, the thermal cycle undergone by the weld material; however this aspect is frequently avoided when the samples are elaborated. In the present work was studied the effect of parent metal thickness on the dilution coefficient, the microstructure and the hardness of the hardfacing welds formed by white irons, based on the bodies and heat sources simplified schemes, as well as the mathematical models applied in thermal processes in welding. The results demonstrated the significant effect of plate thickness parameter on the response variables studied and the applicability of theoretical models of thermal processes in welding is also demonstrated in the adequate sizing of the test plates, which allows the reproducibility in practice of the results of the characterization of hardfacing welds. [ABSTRACT FROM AUTHOR]