Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding
This study performed welding on various welding positions in the flat, overhead, and vertical down positions using a pulsed gas metal arc welding (P-GMAW) process. Despite the same amount of heat input on various welding positions, the welding characteristics varied depending on the welding position...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/21/4626 |
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| author | Jin-Hyeong Park Sung-Hwan Kim Hyeong-Soon Moon Myung-Hyun Kim |
| author_facet | Jin-Hyeong Park Sung-Hwan Kim Hyeong-Soon Moon Myung-Hyun Kim |
| author_sort | Jin-Hyeong Park |
| collection | DOAJ |
| description | This study performed welding on various welding positions in the flat, overhead, and vertical down positions using a pulsed gas metal arc welding (P-GMAW) process. Despite the same amount of heat input on various welding positions, the welding characteristics varied depending on the welding positions. The effect of gravity on the welding process determined the different formation of the weld bead, and the influence of molten pool behavior on various welding positions changed the microstructure in the weld metal. The current and voltage signals were synchronized with a high-speed camera using a data acquisition (DAQ) system. To induce the one pulse one drop (OPOD) process of metal transfer, the shielding gas was used 95% Ar+5% CO2. The microstructure of the weld metal was analyzed in relation to molten pool behavior. |
| first_indexed | 2024-12-19T19:56:33Z |
| format | Article |
| id | doaj.art-2945cef1747942caa7d0d939a362ba78 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-19T19:56:33Z |
| publishDate | 2019-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-2945cef1747942caa7d0d939a362ba782022-12-21T20:07:47ZengMDPI AGApplied Sciences2076-34172019-10-01921462610.3390/app9214626app9214626Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc WeldingJin-Hyeong Park0Sung-Hwan Kim1Hyeong-Soon Moon2Myung-Hyun Kim3Precision Manufacturing & Control R&D Group, Korea Institute of Industrial Technology, Busan 46938, KoreaPrecision Manufacturing & Control R&D Group, Korea Institute of Industrial Technology, Busan 46938, KoreaPrecision Manufacturing & Control R&D Group, Korea Institute of Industrial Technology, Busan 46938, KoreaDept. of Naval Architecture and Ocean Engineering Pusan National University, 2, Busan daehak-ro 63beon gil, Geumjeong-gu, Busan 46241, KoreaThis study performed welding on various welding positions in the flat, overhead, and vertical down positions using a pulsed gas metal arc welding (P-GMAW) process. Despite the same amount of heat input on various welding positions, the welding characteristics varied depending on the welding positions. The effect of gravity on the welding process determined the different formation of the weld bead, and the influence of molten pool behavior on various welding positions changed the microstructure in the weld metal. The current and voltage signals were synchronized with a high-speed camera using a data acquisition (DAQ) system. To induce the one pulse one drop (OPOD) process of metal transfer, the shielding gas was used 95% Ar+5% CO2. The microstructure of the weld metal was analyzed in relation to molten pool behavior.https://www.mdpi.com/2076-3417/9/21/4626various welding positionsmolten pool behaviorone pulse one dropmicrostructure |
| spellingShingle | Jin-Hyeong Park Sung-Hwan Kim Hyeong-Soon Moon Myung-Hyun Kim Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding Applied Sciences various welding positions molten pool behavior one pulse one drop microstructure |
| title | Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding |
| title_full | Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding |
| title_fullStr | Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding |
| title_full_unstemmed | Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding |
| title_short | Influence of Gravity on Molten Pool Behavior and Analysis of Microstructure on Various Welding Positions in Pulsed Gas Metal Arc Welding |
| title_sort | influence of gravity on molten pool behavior and analysis of microstructure on various welding positions in pulsed gas metal arc welding |
| topic | various welding positions molten pool behavior one pulse one drop microstructure |
| url | https://www.mdpi.com/2076-3417/9/21/4626 |
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