Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys
In this paper, a double pulse gas metal arc welding (DP-GMAW) for an AA6061-T6 aluminum alloy based on fewer basic welding parameters than the traditional DP-GMAW is proposed. This study compared the difference in pulse base currents (<inline-formula><math xmlns="http://www.w3.org/1998...
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MDPI AG
2022-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/7/2513 |
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| author | Li Jin Yuqing Yang Ping Yao Wenshi Chen Zhiqiu Qian Jiaxiang Xue |
| author_facet | Li Jin Yuqing Yang Ping Yao Wenshi Chen Zhiqiu Qian Jiaxiang Xue |
| author_sort | Li Jin |
| collection | DOAJ |
| description | In this paper, a double pulse gas metal arc welding (DP-GMAW) for an AA6061-T6 aluminum alloy based on fewer basic welding parameters than the traditional DP-GMAW is proposed. This study compared the difference in pulse base currents (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">b</mi></msub></mrow></semantics></math></inline-formula>) and the difference in the pulse peak currents (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">p</mi></msub></mrow></semantics></math></inline-formula>) by analyzing the electrical signal and morphology properties of welded samples. The results indicated that changing <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">p</mi></msub></mrow></semantics></math></inline-formula> caused welding defects or even welding failure easily. The welding stability after changing <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mrow><mi mathvariant="normal">b</mi></mrow></msub></mrow></semantics></math></inline-formula> was much better than that after changing <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">p</mi></msub></mrow></semantics></math></inline-formula>. The individual fish-scale width of the weld joint remained unchanged when <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo> </mo><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mrow><mi mathvariant="normal">b</mi></mrow></msub></mrow></semantics></math></inline-formula> was at different values. In addition, the average absorbed work, tensile strength, yield strength and elongation of the weld joints obtained by different <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mrow><mi mathvariant="normal">b</mi></mrow></msub></mrow></semantics></math></inline-formula> values reached 31.1%, 60.2%, 52.9% and 37.9% of the base metal, respectively. |
| first_indexed | 2024-03-09T11:40:20Z |
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| id | doaj.art-7eba628ca05b4b9faf1a780d01958f80 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:40:20Z |
| publishDate | 2022-03-01 |
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| series | Materials |
| spelling | doaj.art-7eba628ca05b4b9faf1a780d01958f802023-11-30T23:33:10ZengMDPI AGMaterials1996-19442022-03-01157251310.3390/ma15072513Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum AlloysLi Jin0Yuqing Yang1Ping Yao2Wenshi Chen3Zhiqiu Qian4Jiaxiang Xue5School of Mechatronics Engineering, Guizhou Minzu University, Guiyang 550025, ChinaSchool of Mechatronics Engineering, Guizhou Minzu University, Guiyang 550025, ChinaCollege of Electromechanical Engineering, Guangdong Polytechnic Normal University, Guangzhou 510635, ChinaSchool of Mechatronics Engineering, Guizhou Minzu University, Guiyang 550025, ChinaSchool of Mechatronics Engineering, Guizhou Minzu University, Guiyang 550025, ChinaSchool of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510650, ChinaIn this paper, a double pulse gas metal arc welding (DP-GMAW) for an AA6061-T6 aluminum alloy based on fewer basic welding parameters than the traditional DP-GMAW is proposed. This study compared the difference in pulse base currents (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">b</mi></msub></mrow></semantics></math></inline-formula>) and the difference in the pulse peak currents (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">p</mi></msub></mrow></semantics></math></inline-formula>) by analyzing the electrical signal and morphology properties of welded samples. The results indicated that changing <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">p</mi></msub></mrow></semantics></math></inline-formula> caused welding defects or even welding failure easily. The welding stability after changing <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mrow><mi mathvariant="normal">b</mi></mrow></msub></mrow></semantics></math></inline-formula> was much better than that after changing <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mi mathvariant="normal">p</mi></msub></mrow></semantics></math></inline-formula>. The individual fish-scale width of the weld joint remained unchanged when <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo> </mo><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mrow><mi mathvariant="normal">b</mi></mrow></msub></mrow></semantics></math></inline-formula> was at different values. In addition, the average absorbed work, tensile strength, yield strength and elongation of the weld joints obtained by different <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="sans-serif">Δ</mi><msub><mi>I</mi><mrow><mi mathvariant="normal">b</mi></mrow></msub></mrow></semantics></math></inline-formula> values reached 31.1%, 60.2%, 52.9% and 37.9% of the base metal, respectively.https://www.mdpi.com/1996-1944/15/7/2513current waveformDP-GMAWaluminum alloybasic welding parameterswelding stabilitymechanical properties |
| spellingShingle | Li Jin Yuqing Yang Ping Yao Wenshi Chen Zhiqiu Qian Jiaxiang Xue Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys Materials current waveform DP-GMAW aluminum alloy basic welding parameters welding stability mechanical properties |
| title | Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys |
| title_full | Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys |
| title_fullStr | Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys |
| title_full_unstemmed | Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys |
| title_short | Investigation of the Difference in the Pulse Current in the Double Pulsed Gas Metal Arc Welding of Aluminum Alloys |
| title_sort | investigation of the difference in the pulse current in the double pulsed gas metal arc welding of aluminum alloys |
| topic | current waveform DP-GMAW aluminum alloy basic welding parameters welding stability mechanical properties |
| url | https://www.mdpi.com/1996-1944/15/7/2513 |
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