Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method
The welding of the bottom-locking structure in a detector receptacle plays an essential role in ensuring the safety of nuclear equipment. A pulsed TIG–laser hybrid welding method is proposed to address the problem of welding pores in locking structural parts. The effects of the pulse frequency on th...
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| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/14/12/1469 |
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| author | Yonglong Yu Jianzhou Xu Xiaoquan Yu Liang Guo Tongyu Zhu Ding Fan |
| author_facet | Yonglong Yu Jianzhou Xu Xiaoquan Yu Liang Guo Tongyu Zhu Ding Fan |
| author_sort | Yonglong Yu |
| collection | DOAJ |
| description | The welding of the bottom-locking structure in a detector receptacle plays an essential role in ensuring the safety of nuclear equipment. A pulsed TIG–laser hybrid welding method is proposed to address the problem of welding pores in locking structural parts. The effects of the pulse frequency on the escape of porosity and of porosity on the mechanical properties of the hybrid welding joint were investigated. The results were compared to those of direct current (0 Hz), showing that the pulse frequency affects the stability of the arc. With an increase in pulse frequency, the grain size of the fusion zone gradually decreases, and the flow in the middle area of the molten pool increases. This subjects bubbles in the molten pool to a thrust force, which causes the bubbles to escape to the surface of the molten pool. Compared with 0 Hz, the tensile strength of the joint increased by 67%. This provides a new solution for obtaining reliable welded joints for the bottom-locking structure of detector storage tanks. |
| format | Article |
| id | doaj-art-9e05e00c0e33417b9e10f73d9f7cca0c |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj-art-9e05e00c0e33417b9e10f73d9f7cca0c2024-12-27T14:40:12ZengMDPI AGMetals2075-47012024-12-011412146910.3390/met14121469Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser MethodYonglong Yu0Jianzhou Xu1Xiaoquan Yu2Liang Guo3Tongyu Zhu4Ding Fan5CNNC 404 Limited, Lanzhou 735100, ChinaSchool of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaZhejiang Key Laboratory of Advanced Solid State Energy Storage Technology and Applications, Taizhou Institute of Zhejiang University, Taizhou 318000, ChinaCNNC 404 Limited, Lanzhou 735100, ChinaCNNC 404 Limited, Lanzhou 735100, ChinaSchool of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, ChinaThe welding of the bottom-locking structure in a detector receptacle plays an essential role in ensuring the safety of nuclear equipment. A pulsed TIG–laser hybrid welding method is proposed to address the problem of welding pores in locking structural parts. The effects of the pulse frequency on the escape of porosity and of porosity on the mechanical properties of the hybrid welding joint were investigated. The results were compared to those of direct current (0 Hz), showing that the pulse frequency affects the stability of the arc. With an increase in pulse frequency, the grain size of the fusion zone gradually decreases, and the flow in the middle area of the molten pool increases. This subjects bubbles in the molten pool to a thrust force, which causes the bubbles to escape to the surface of the molten pool. Compared with 0 Hz, the tensile strength of the joint increased by 67%. This provides a new solution for obtaining reliable welded joints for the bottom-locking structure of detector storage tanks.https://www.mdpi.com/2075-4701/14/12/1469bottom-locked constructionlaser–arc hybrid weldingpulse frequencypore |
| spellingShingle | Yonglong Yu Jianzhou Xu Xiaoquan Yu Liang Guo Tongyu Zhu Ding Fan Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method Metals bottom-locked construction laser–arc hybrid welding pulse frequency pore |
| title | Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method |
| title_full | Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method |
| title_fullStr | Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method |
| title_full_unstemmed | Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method |
| title_short | Welding Pores Evolution in the Detector Bottom-Locking Structure Fabricated Using the Hybrid Pulsed Arc–Laser Method |
| title_sort | welding pores evolution in the detector bottom locking structure fabricated using the hybrid pulsed arc laser method |
| topic | bottom-locked construction laser–arc hybrid welding pulse frequency pore |
| url | https://www.mdpi.com/2075-4701/14/12/1469 |
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