Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
The effect of pulsed cold-wire feeding on the performanceof spray GMAW
Federal University of Uberlandia, Uberlândia, MG, Brazil (BRA).
Federal University of Uberlandia, Uberlândia, MG, Brazil (BRA).
Federal University of Uberlandia, Uberlândia, MG, Brazil (BRA).
University West, Department of Engineering Science, Division of Welding Technology. (PTW)ORCID iD: 0000-0002-1005-5895
2020 (English)In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 107, p. 3485-3498Article in journal (Refereed) Published
Abstract [en]

The application of pulsed cold-wire (P-CW) feeding has been one of the new approaches for arc welding over the past years. Such technique applied to GTAW shows that it can influence the process performance. However, P-CW feeding in GMAW has not been explored yet. Thus, the current work aimed at introducing and evaluating the effects of P-CW on the performance of GMAW, particularly with the spray metal transfer. The P-CW pulsing frequency and the angle between the cold-wire and the plate were varied in bead-on-plate and V-groove weldments. The effects of the P-CW on the weld bead geometry and metallurgical texture were, then, examined through cross-sections. The metal transfer from the wire tip to the weld pool and the arc behavior during wire feeding were analyzed backed by high-speed imaging. A thermal camera was used to monitor the back of the plates to examine the heat behavior with both the P-CW and non-pulsed feeding conditions. On the one hand, the results revealed that, although the pulsation affects the arc and the electric signal behavior and the metal transfer, no sensitive influence could be noticed regarding the weld bead geometries. On the other hand, the pulsed cold-wire feeding interfered in the thermal profile outside the weld pool. For the highest frequency explored, regardless the feeding angle, less heat was transferred to the plate. The smaller heat input in these cases limited grain growth, reducing the coarse grain HAZ area and resulting in a more refined microstructure. Therefore, P-CW showed to interfere in the GMAW process performance.

Place, publisher, year, edition, pages
Springer Nature, 2020. Vol. 107, p. 3485-3498
Keywords [en]
Pulsed wire feeding, Dynamic wire feeding, Cold-wire, GMAW
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-15141DOI: 10.1007/s00170-020-05247-4ISI: 000529705000040Scopus ID: 2-s2.0-85083784698OAI: oai:DiVA.org:hv-15141DiVA, id: diva2:1426026
Note

Funders: Brazilian agencies for research development CNPq [processes 302863/2016-8 and 315092/2018-1]; CAPES [Finance Code 001]

Available from: 2020-04-23 Created: 2020-04-23 Last updated: 2021-04-19Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Scotti, Américo

Search in DiVA

By author/editor
Scotti, Américo
By organisation
Division of Welding Technology
In the same journal
The International Journal of Advanced Manufacturing Technology
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 50 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf