Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel
The purpose of this study is to develop a novel welding torch with high wind resistance, which can be used for welding outside a building under strong cross-wind. In this paper, a parametric study was carried out using different torch nozzle designs and shield gas flow rates for their optimization....
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MDPI AG
2021
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oai:doaj.org-article:5ff6d219f50c4f73a7319600f7c3f16f2021-11-25T18:21:08ZInfluence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel10.3390/met111116772075-4701https://doaj.org/article/5ff6d219f50c4f73a7319600f7c3f16f2021-10-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1677https://doaj.org/toc/2075-4701The purpose of this study is to develop a novel welding torch with high wind resistance, which can be used for welding outside a building under strong cross-wind. In this paper, a parametric study was carried out using different torch nozzle designs and shield gas flow rates for their optimization. The gas flow around the torch nozzle exit was visualized through the shadowgraph method to evaluate the interaction between the shielding gas flow and the cross-wind. Nitrogen fraction in a weld bead was measured for confirming the shielding effect. Furthermore, CFD simulation was also carried out for obtaining shielding gas flow velocity at the torch nozzle exit. From the result of the above experiments and simulation, effective parameters for improving the shielding effect against the cross-wind were comprehensively discussed. As a result, the nitrogen fraction was found to be decreased by increasing the averaged vertical gas velocity at the torch nozzle exit. For achieving this, it is especially effective to decrease the nozzle diameter or increase the gas flow rate.Shinichi TashiroNgoc Quang TrinhTetsuo SugaNatsume MatsudaNaotaka TsurumaruTomohiko MaedaRyohei TanakaSatoshi NakatsuGen TsujiiHanh Van BuiManabu TanakaMDPI AGarticlecross-windCO<sub>2</sub> arc weldingnitrogenshielding abilityMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1677, p 1677 (2021) |
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DOAJ |
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EN |
| topic |
cross-wind CO<sub>2</sub> arc welding nitrogen shielding ability Mining engineering. Metallurgy TN1-997 |
| spellingShingle |
cross-wind CO<sub>2</sub> arc welding nitrogen shielding ability Mining engineering. Metallurgy TN1-997 Shinichi Tashiro Ngoc Quang Trinh Tetsuo Suga Natsume Matsuda Naotaka Tsurumaru Tomohiko Maeda Ryohei Tanaka Satoshi Nakatsu Gen Tsujii Hanh Van Bui Manabu Tanaka Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel |
| description |
The purpose of this study is to develop a novel welding torch with high wind resistance, which can be used for welding outside a building under strong cross-wind. In this paper, a parametric study was carried out using different torch nozzle designs and shield gas flow rates for their optimization. The gas flow around the torch nozzle exit was visualized through the shadowgraph method to evaluate the interaction between the shielding gas flow and the cross-wind. Nitrogen fraction in a weld bead was measured for confirming the shielding effect. Furthermore, CFD simulation was also carried out for obtaining shielding gas flow velocity at the torch nozzle exit. From the result of the above experiments and simulation, effective parameters for improving the shielding effect against the cross-wind were comprehensively discussed. As a result, the nitrogen fraction was found to be decreased by increasing the averaged vertical gas velocity at the torch nozzle exit. For achieving this, it is especially effective to decrease the nozzle diameter or increase the gas flow rate. |
| format |
article |
| author |
Shinichi Tashiro Ngoc Quang Trinh Tetsuo Suga Natsume Matsuda Naotaka Tsurumaru Tomohiko Maeda Ryohei Tanaka Satoshi Nakatsu Gen Tsujii Hanh Van Bui Manabu Tanaka |
| author_facet |
Shinichi Tashiro Ngoc Quang Trinh Tetsuo Suga Natsume Matsuda Naotaka Tsurumaru Tomohiko Maeda Ryohei Tanaka Satoshi Nakatsu Gen Tsujii Hanh Van Bui Manabu Tanaka |
| author_sort |
Shinichi Tashiro |
| title |
Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel |
| title_short |
Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel |
| title_full |
Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel |
| title_fullStr |
Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel |
| title_full_unstemmed |
Influence of Cross-Wind on CO<sub>2</sub> Arc Welding of Carbon Steel |
| title_sort |
influence of cross-wind on co<sub>2</sub> arc welding of carbon steel |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/5ff6d219f50c4f73a7319600f7c3f16f |
| work_keys_str_mv |
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| _version_ |
1718411259988148224 |