Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
COMPARATIVE STUDY BETWEEN GMAW-CW AND GMAW-EW PROCESSES WITH ADDITION OF A COLD ENERGISED WIRE
Submission Author:
Pedro Paulo Guimarães Ribeiro , PA
Co-Authors:
Josiane Rodrigues dos Reis, Matheus Fonseca, Cristhian Loayza, Paulo Assunção , Ademir Angelo Castro Filho, Eduardo Braga, Pedro Paulo Guimarães Ribeiro
Presenter: Matheus Fonseca
doi://10.26678/ABCM.COBEM2017.COB17-2202
Abstract
In a highly competitive market, the GMAW process begins to fail to meet productivity needs, and it is imperative to seek a process with high deposition rates, reduction in welding time, and low operating costs. For surfaces that have undergone erosive processes their reconstitution is performed using Cold Wire-GMAW process, where cold wire is added to the melt pool using the thermal energy of the arc to execute the weld joint that promotes its fusion, increasing the mass of material in the joint and consequently the productivity of the process; however this increase of mass has been limited. The purpose of this work is to make a comparative analysis of the CW-GMAW processes with the EW-GMAW, which is the welding in which the cold wire is energized, varying the direction of welding (pulling and pushing), to obtain a high deposition of welded material. The results showed that welding by the EW-GMAW process showed higher deposition in pulling mode, less spatter, better wettability, good appearance, generating an acceptable aspect cord for coating purposes, with a 140% cold wire addition and a dilution of approximately 15% with current 80A.
Keywords
welding, GMAW, Cold wire, Electric-Wire, coating
