Comparative Study Between Gmaw-Cw and Gmaw-Ew Processes With Addition of a Cold Energised Wire

Reis, Josiane Rodrigues dos; Fonseca, M. A. C.; Loayza, Cristhian; Assunção, P. D. C.; Filho, Ademir Angelo Castro; Braga, Eduardo de Magalhães; Ribeiro, Pedro Paulo Guimarães

doi:10.26678/abcm.cobem2017.cob17-2202

Cited by 1 publication

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“…The deposition rate was increased by 77% to 17.2 kg h -1 in direct comparison with conventional GMAW, while the heat input increased by only 15%. Rodrigues dos Reis et al (2017) [19] compared the process with GMAW cold wire and attested the hot wire process a better output, lower spatter tendency, better weldability and a better seam appearance. An investigation of the directional dependency showed that the process is less subject to strong uctuations in the seam result depending on the wire feed direction.…”

Section: Single-wire Gmawmentioning

confidence: 99%

“…In this way, a reduction of the heat input into the component can be realised with an increase in productivity compared to conventional GMAW. Rodrigues dos Reis et al (2017) [19] state that the deposition rate can be at least doubled compared to conventional GMAW welding. Investigating the effect of different wire feeding directions, they found that a piercing cold wire feed partially damaged the weld, while a dragging cold wire feed was prone to spattering.…”

Section: Single-wire Gmawmentioning

confidence: 99%

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Joint welding of mild steel using a GMAW hot-wire process

Ungethüm,

Schilling,

Spaniol

et al. 2023

Preprint

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Due to the coupled filler material and energy supply in GMAW processes, these processes have limited productivity. To increase productivity and decrease heat input, a GMAW process can be combined with an auxiliary hot wire. In this paper a GMAW hot wire process with indirect resistive heating of the auxiliary wire (between two current nozzles) is used for joint welding of thick sheets (mild steel). In order to demonstrate the potential of the process for joint welding of mild steel plates (8 mm and 20 mm), test welds are carried out., Charpy impact and tensile specimens of the welds are produced to determine the mechanical properties of the joint. To further increase the understanding of the process, calorimetric measurements are conducted to quantify the energy input of the process. Based on the performed analyses, it is possible to demonstrate the potential of the process for joint welding and to show a possible competition to existing processes

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Section: Single-wire Gmawmentioning

confidence: 99%

Section: Single-wire Gmawmentioning

confidence: 99%