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Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance
Real-time electric signal, matter transfer mode and welding pool behavior were obtained to investigate the effect of wires’ filling rate on arc stability and joints’ appearance during underwater wet flux-cored arc welding (FCAW). The electric signal results showed that arc stability first decreased...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084612/ https://www.ncbi.nlm.nih.gov/pubmed/32120811 http://dx.doi.org/10.3390/ma13051061 |
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author | Zhang, Xin Guo, Ning Xu, Changsheng Kan, Haoran Tan, Yanbo Chen, Hao |
author_facet | Zhang, Xin Guo, Ning Xu, Changsheng Kan, Haoran Tan, Yanbo Chen, Hao |
author_sort | Zhang, Xin |
collection | PubMed |
description | Real-time electric signal, matter transfer mode and welding pool behavior were obtained to investigate the effect of wires’ filling rate on arc stability and joints’ appearance during underwater wet flux-cored arc welding (FCAW). The electric signal results showed that arc stability first decreased and then increased rapidly because the raise of filling rate affected the number of charged particles and the electrical conductivity of welding arc atmosphere. Two typical transfer modes, globular repelled transfer mode and surface tension transfer mode, were observed in this study. The ratio of surface tension transition could be increased by adding wires’ filling rate. Meanwhile, the geometry of molten pool was changed and the distance between droplets to welding pool reduced as the filling rate increased. The fusion line became more regular and the radius of curvature increased under the effect of bubbles in the molten pool. As the filling rate improving, more slags on the welds surface were acquired and the welds were much flatter and smoother. |
format | Online Article Text |
id | pubmed-7084612 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70846122020-03-24 Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance Zhang, Xin Guo, Ning Xu, Changsheng Kan, Haoran Tan, Yanbo Chen, Hao Materials (Basel) Article Real-time electric signal, matter transfer mode and welding pool behavior were obtained to investigate the effect of wires’ filling rate on arc stability and joints’ appearance during underwater wet flux-cored arc welding (FCAW). The electric signal results showed that arc stability first decreased and then increased rapidly because the raise of filling rate affected the number of charged particles and the electrical conductivity of welding arc atmosphere. Two typical transfer modes, globular repelled transfer mode and surface tension transfer mode, were observed in this study. The ratio of surface tension transition could be increased by adding wires’ filling rate. Meanwhile, the geometry of molten pool was changed and the distance between droplets to welding pool reduced as the filling rate increased. The fusion line became more regular and the radius of curvature increased under the effect of bubbles in the molten pool. As the filling rate improving, more slags on the welds surface were acquired and the welds were much flatter and smoother. MDPI 2020-02-27 /pmc/articles/PMC7084612/ /pubmed/32120811 http://dx.doi.org/10.3390/ma13051061 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhang, Xin Guo, Ning Xu, Changsheng Kan, Haoran Tan, Yanbo Chen, Hao Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance |
title | Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance |
title_full | Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance |
title_fullStr | Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance |
title_full_unstemmed | Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance |
title_short | Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance |
title_sort | effect of filling rate on underwater wet welding process and weld appearance |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084612/ https://www.ncbi.nlm.nih.gov/pubmed/32120811 http://dx.doi.org/10.3390/ma13051061 |
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