Influencia de la soldadura de raíz con ERNiCrMo-3 en las propiedades de las uniones soldadas de fundición nodular

Manuel Pascual-Guillamón; Javier Cárcel-Carrasco; Miguel Á. Pérez-Puig; Fidel Salas-Vicente

doi:10.3989/revmetalm.122

Authors

Manuel Pascual-Guillamón ITM, Universitat Politècnica de València https://orcid.org/0000-0003-0216-5119
Javier Cárcel-Carrasco ITM, Universitat Politècnica de València https://orcid.org/0000-0003-2776-533X
Miguel Á. Pérez-Puig ITM, Universitat Politècnica de València https://orcid.org/0000-0001-9343-9888
Fidel Salas-Vicente ITM, Universitat Politècnica de València https://orcid.org/0000-0003-0834-4425

DOI:

https://doi.org/10.3989/revmetalm.122

Keywords:

Cast iron joint, Heat treatment, Mechanical properties, SMAW technique

Abstract

This article studies the effect of an ERNiCrMo-3 GTAW root pass on the microstructure and mechanical properties of a nodular cast iron joint when the cover passes are made using the SMAW technique and with Ni electrodes. To have a better understanding of the results, they are compared to the characteristics of a full Ni SMAW weld. This was done before and after an annealing at 900 °C in order to evaluate the influence and possible benefits of this heat treatment. The results show that the presence of a GTAW ERNiCrMo-3 root pass, despite improving penetration, leads to a loss of mechanical properties due to the presence of hard phases in the root pass that even an annealing is not able to eliminate.

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