Analysis of current pulse during short-circuit phase in CMT version of GMAW process under a view of additive manufacturing

Galeazzi, Daniel; Silva, Régis Henrique Gonçalves e; Pigozzo, Ivan Olszanski; Rosa, Álisson Fernandes da; Pereira, Alex Sandro; Marques, Cleber

doi:10.1007/s40194-022-01298-1

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Afterward, the wire recoils, terminating the short-circuit and reigniting the arc. This repeated process results in a lower average temperature and heat input compared to traditional welding methods, possibly improving the weld quality and broadening the potential material choices [4].…”

Section: State Of the Artmentioning

confidence: 99%

“…Additionally, the multiscale aspect of the welding process adds another layer of complexity. The bi-F I G U R E 1 A typical sequence in a bi-directional wire control process: highly regulated course of the current, voltage and wire feed speed [4].…”

Section: State Of the Artmentioning

confidence: 99%

“… A typical sequence in a bi‐directional wire control process: highly regulated course of the current, voltage and wire feed speed [4].…”

Section: State Of the Artmentioning

confidence: 99%

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Simulation of wire metal transfer in the cold metal transfer (CMT) variant of gas metal arc welding using the smoothed particle hydrodynamics (SPH) approach

Mokrov,

Warkentin,

Westhofen

et al. 2024

Materialwissenschaft Werkst

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Cold metal transfer (CMT) is a variant of gas metal arc welding (GMAW) in which the molten metal of the wire is transferred to the weld pool mainly in the short‐circuit phase. A special feature here is that the wire is retracted during this strongly controlled welding process. This allows precise and spatter‐free formation of the weld seams with lower energy input. To simulate this process, a model based on the particle‐based smoothed particle hydrodynamics (SPH) method is developed. This method provides a native solution for the mass and heat transfer. A simplified surrogate model was implemented as an arc heat source for welding simulation. This welding simulation model based on smoothed particle hydrodynamics method was augmented with surface effects, the Joule heating of the wire, and the effect of the electromagnetic forces. The model of metal transfer in the cold metal transfer process shows good qualitative agreement with real experiments.

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Section: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%