Melting and welding power characteristics of MIG–CMT versus conventional MIG for aluminium 5183

Dutra, Jair Carlos; Silva, Régis Henrique Gonçalves e; Marques, Cleber

doi:10.1080/09507116.2014.932974

Cited by 15 publications

(5 citation statements)

References 2 publications

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“…Comparing the characteristic curves of both processes, CMT presented a smaller average (Root Mean Square, RMS) welding voltage during the procedure, which means that the arc of this technology is also smaller than that of standard GMAW, which has a positive impact on the heat input yield. These characteristics are in accordance with the results obtained by Dutra et al [47]. It was reported that the short-circuit voltage remains at a very low level during this process when compared to GMAW-MIG technology.…”

Section: Welding Analysessupporting

confidence: 92%

A Detailed Forecast of the Technologies Based on Lifecycle Analysis of GMAW and CMT Welding Processes

et al. 2021

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In this study, GMAW and CMT welding technologies were evaluated in terms of their technological lifecycles based on their patent datasets together with the S-curve concept, and the joints were evaluated in terms of their welding characteristics. To predict the future trends for both technologies, different models based on the time-series and growth-curve methods were tested. From a process point of view, the results showed better performance and stability for the CMT process based on the heat input to the base material and the frequency of the short circuits. The temperature distribution in the sample revealed that the GMAW process delivers higher values and, consequently, greater heat transfer. Regarding the technological lifecycle, the analyses revealed that the CMT welding process, despite being recent, is already in its mature phase. Moreover, the GMAW welding process is positioned in the growth phase on the S-curve, indicating a possibility of advancement. The main findings indicated that through mathematical modelling, it is possible to predict, in a precise way, the inflection points and the maturity phases of each technology and chart their trends with expert opinions. The new perspectives for analysing maturity levels and welding characteristics presented herein will be essential for a broaden decision-making market process.

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Section: Welding Analysessupporting

confidence: 92%

A Detailed Forecast of the Technologies Based on Lifecycle Analysis of GMAW and CMT Welding Processes

et al. 2021

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“…The retraction of the wire during the short-circuiting phase of the CMT welding process prevents spatter generation and produces better weld bead aesthetics. CMT welding was found to be more stable, and the root produced showed a better finish, both on the surface and back of the joint, than that obtained using MIG welding [74].…”

Section: Cold Metal Transfer Weldingmentioning

confidence: 82%

Studies on the Quality of Joints and Phenomena Therein for Welded Automotive Components Made of Aluminum Alloy—A Review

Derbiszewski,

Obraniak,

Rylski

et al. 2024

Coatings

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To fulfill the need to limit automotive emissions, reducing vehicle weight is widely recommended and achieved in many ways, both by the construction of individual elements of the vehicle and by the selection of light materials, including Al alloys. Connecting these elements with each other and with elements made of iron alloys can be realized, inter alia, by welding or stir welding. However, the quality of the welds obtained varies widely and depends on many design, operational, and environmental factors. The present study focused on a review of various welding techniques used to join both similar and dissimilar Al alloys utilized in the automotive industry, the effect of various process parameters on weld quality, and the phenomena observed in such welds. The research methodology was based on the analysis of the content of articles from main databases. Apart from capturing the current state of the art, this review evaluates reaching the possible highest joint quality and welding process disadvantages such as porosity, poor surface quality, a tendency toward hot cracking, and low ductility for the Al alloys applied in the automotive industry.

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“…The retraction of the wire during the short-circuiting phase during the CMT welding prevented spatter generation and produced better weld bead aesthetics. The CMT welding showed more stability and the root produced showed a good finish, both on the surface and back of the joint than the MIG welding [74].…”

Section: Cold Metal Transfer Weldingmentioning

confidence: 92%

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

Derbiszewski,

Obraniak,

Rylski

et al. 2024

Preprint

View full text Add to dashboard Cite

To fulfil a need of limitation automotive emissions the reduction of vehicle weight is widely recommended and achieved in many ways, both by the construction of individual elements of the vehicle, and by the selection of light materials including Al alloys. Connecting these elements with each other and with elements made of iron alloys can be realized, inter alia, by welding or stir welding. However, the quality of the welds obtained varies widely and depends on many design, operational and environmental factors. The present study focused on a review of various welding technics used to joint both similar and dissimilar Al alloys utilized in automotive industry, the effect of various process parameters on welds quality, and phenomena appeared in such welds..

show abstract

Melting and welding power characteristics of MIG–CMT versus conventional MIG for aluminium 5183

Cited by 15 publications

References 2 publications

A Detailed Forecast of the Technologies Based on Lifecycle Analysis of GMAW and CMT Welding Processes

A Detailed Forecast of the Technologies Based on Lifecycle Analysis of GMAW and CMT Welding Processes

Studies on the Quality of Joints and Phenomena Therein for Welded Automotive Components Made of Aluminum Alloy—A Review

Studies on Quality of Joints and Phenomena Therein for Welded Vehicle Components Made of Aluminium Alloy – a Review

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