Abstract

ORTIZ MENDEZ, Tamara; CRUZ CRESPO, Amado  and  RODRIGUEZ PEREZ, Manuel. Characterization of deposits of a tubular electrode of fe-cr-mn-si-c system used for surfacing work pieces under abrasive wear conditions. cen. az. [online]. 2017, vol.44, n.3, pp. 93-100. ISSN 2223-4861.

In this work the chemical and metallographic characterization of the deposit without dilution obtained with an experimental tubular electrode (CIS 3), developed for hardfacing through manual welding with a coated electrode (SMAW) of surfaces under abrasive wear conditions, using a combined Fe-Cr-Mn-Si-C ferroalloy resulting from pyro-metallurgical processing of Cuban chromite and pyrolite minerals, is carried out. The deposit was obtained as specified in the AWS A5.13 standard, for hardfacing SMAWelectrodes. As characterization techniques: optical and electron microscopy, phase microanalysis, volumetric hardness and micro hardness studies were used, as well as chemical composition analysis using atomic emission spectroscopy. As a result it was determined that the material of the deposit without dilution belongs to the white irons system, alloyed with Cr, Mn and Si. This material presents a hypereutectic microstructure. These results show the CIS 3 tubular electrode with favorable characteristics in terms of its application as a hardfacing consumable of pieces subjected to abrasive wear conditions as main mechanism of damage.

Keywords : welding; hardfacing; white iron; tubular electrode.

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