Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel
The automobile industry puts forward higher requirements for the design and manufacture of steel pistons. However, the welding of 42CrMo steel pistons still has unsolved technical problems, especially welding defects that cannot be directly detected, such as pores, which are easily generated inside...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/11/1246 |
| _version_ | 1797458016112476160 |
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| author | Yan Zhang Hao Li Xin Mi Hongzhi Zhou Mingjun Zhang Zhongmin Wan Liyuan Tang |
| author_facet | Yan Zhang Hao Li Xin Mi Hongzhi Zhou Mingjun Zhang Zhongmin Wan Liyuan Tang |
| author_sort | Yan Zhang |
| collection | DOAJ |
| description | The automobile industry puts forward higher requirements for the design and manufacture of steel pistons. However, the welding of 42CrMo steel pistons still has unsolved technical problems, especially welding defects that cannot be directly detected, such as pores, which are easily generated inside the weld. A plasma experiment of laser-metal active gas arc (MAG) hybrid welding 42CrMo steel was conducted in this paper, and plasma signals inside and outside the keyhole were detected during the laser welding, leading laser laser-MAG hybrid welding, and leading arc laser-MAG hybrid welding of 42CrMo steel. The characteristic parameters such as electron temperature and electron density were calculated and analyzed to investigate the relationship between plasma behavior and the formation of weld porosity in the welding process of 42CrMo steel. Based on the fluctuations in plasma electron temperature and electron density, the prediction of pore formation in the weld of 42CrMo steel was made, aiming to provide guidance for achieving a stable and reliable laser-MAG hybrid welding process for 42CrMo steel. |
| first_indexed | 2024-03-09T16:31:02Z |
| format | Article |
| id | doaj.art-0bebe90cd979429aa6fa8a1e96c6f06f |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T16:31:02Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-0bebe90cd979429aa6fa8a1e96c6f06f2023-11-24T15:01:34ZengMDPI AGPhotonics2304-67322023-11-011011124610.3390/photonics10111246Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo SteelYan Zhang0Hao Li1Xin Mi2Hongzhi Zhou3Mingjun Zhang4Zhongmin Wan5Liyuan Tang6College of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaCollege of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaCollege of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaCollege of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaKey Laboratory of High Performance Intelligent Manufacturing of Mechanical Equipment of Hunan Province, Changsha University of Science & Technology, Changsha 410114, ChinaCollege of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaCollege of Mechanical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, ChinaThe automobile industry puts forward higher requirements for the design and manufacture of steel pistons. However, the welding of 42CrMo steel pistons still has unsolved technical problems, especially welding defects that cannot be directly detected, such as pores, which are easily generated inside the weld. A plasma experiment of laser-metal active gas arc (MAG) hybrid welding 42CrMo steel was conducted in this paper, and plasma signals inside and outside the keyhole were detected during the laser welding, leading laser laser-MAG hybrid welding, and leading arc laser-MAG hybrid welding of 42CrMo steel. The characteristic parameters such as electron temperature and electron density were calculated and analyzed to investigate the relationship between plasma behavior and the formation of weld porosity in the welding process of 42CrMo steel. Based on the fluctuations in plasma electron temperature and electron density, the prediction of pore formation in the weld of 42CrMo steel was made, aiming to provide guidance for achieving a stable and reliable laser-MAG hybrid welding process for 42CrMo steel.https://www.mdpi.com/2304-6732/10/11/1246laser-MAG hybrid welding42CrMo steelplasmapore |
| spellingShingle | Yan Zhang Hao Li Xin Mi Hongzhi Zhou Mingjun Zhang Zhongmin Wan Liyuan Tang Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel Photonics laser-MAG hybrid welding 42CrMo steel plasma pore |
| title | Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel |
| title_full | Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel |
| title_fullStr | Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel |
| title_full_unstemmed | Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel |
| title_short | Study on the Physical Characteristics of Plasma and Its Relationship with Pore Formation during Laser-Metal Active Gas Arc Hybrid Welding of 42CrMo Steel |
| title_sort | study on the physical characteristics of plasma and its relationship with pore formation during laser metal active gas arc hybrid welding of 42crmo steel |
| topic | laser-MAG hybrid welding 42CrMo steel plasma pore |
| url | https://www.mdpi.com/2304-6732/10/11/1246 |
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