CHARACTERIZATION OF DEPOSITS OF A TUBULAR ELECTRODE OF Fe-CrMn-Si-C SYSTEM USED FOR SURFACING WORK PIECES UNDER ABRASIVE WEAR CONDITIONS

Abstract

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 SMAW electrodes. 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.