Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
GENERAL EFFECTS OF PULSED COLD-WIRE FEEDING IN GMAW PROCESS WITH SPRAY METAL TRANSFER
Submission Author:
vinicius jorge , MG
Co-Authors:
vinicius jorge, Fernando Matos Scotti, Ruham Reis, Americo Scotti
Presenter: vinicius jorge
doi://10.26678/ABCM.COBEM2019.COB2019-0472
Abstract
Applying pulsed cold wire feeding (P-CW) is one of the new approaches for fusion welding. When applied with the GTAW, this approach is pointed out as a potential way of improving the welding process towards its capability of modifying the weld bead. However, the use of such technique is still unexplored regarding the GMAW process. Thus, the current work is aimed to introduce and evaluate the effect of P-CW for weld bead formation in GMAW. The input angle, position, amplitude and frequency of P-CW were evaluated in bead-on-plate weldments. For analysis purposes three cross sections were cut out of the weld bead. Metallic transfer analysis was conducted and based on tracking the wire tip by means of high-speed shadowgraphy and monitoring the electric current and voltage signals. So far, the current and voltage oscillograms showed that pulsing wire can interfere in welding process, opening a field for studies on the application of P-CW to GMAW.
Keywords
Pulsed wire feeding, Cold wire, GMAW
