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Thick-wire swing arc narrow gap GMA welding assisted by pre-embedding cold wires

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Abstract

To raise narrow gap GMA welding efficiency while ensuring weld formation, the present work presents a thick-wire swing arc narrow gap GMA welding process assisted by cold wires. This process employs the thick wire and the pre-embedded cold wires to jointly increase the welding efficiency while improving the groove sidewall penetration by the swing arc. Two types of thick wires, conventional single-strand welding wire (SWW) and cable-type welding wire (CWW), are respectively used as main wire. After solving the series arc problem during CWW arc-igniting, the effects of the pre-embedded wire layer number on narrow gap weld formation and welding efficiency are investigated for thick-wire welding. Experimental results show that the weld thickness and the sidewall penetration do not obviously change with increasing the layer number of cold wires, while the weld layer height significantly grows. Additionally, the SWW weld formation looks more sound. Compared to thin-wire welding, the SWW and CWW thick-wire welding without the cold wire raises the deposition rate by about 38% and 58%, respectively. When pre-embedding two layers of cold wires, the increased percentage of the deposition rate further rises respectively to about 81% and 112%. These thus demonstrate the effectiveness of the developed process in addition to the higher efficiency of the CWW welding.

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Funding

This research is supported by the National Natural Science Foundation of China (grant no. 51875268).

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Authors and Affiliations

  1. Provincial Key Lab of Advanced Welding Technology, School of Materials Science and Engineering, Jiangsu University of Science and Technology, 666 Changhui Road, Zhenjiang, 212100, Jiangsu, China

    Zhengyu Zhu, Jiayou Wang, Shubin Liu, Yuqing Jiang, Jie Zhu, Xuyang Li & Luxiao Zhang

  2. School of Naval Architecture and Ocean Engineering, Jiangsu Maritime Institute, 309 Gezhi Road, Nanjing, 211170, Jiangsu, China

    Zhengyu Zhu

Authors
  1. Zhengyu Zhu
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  2. Jiayou Wang
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  3. Shubin Liu
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  4. Yuqing Jiang
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  5. Jie Zhu
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  6. Xuyang Li
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  7. Luxiao Zhang
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Contributions

Zhengyu Zhu and Jiayou Wang contributed to the conception and design of the research. Data curation was performed by Zhengyu Zhu, Jiayou Wang, Shubin Liu, and Yuqing Jiang. Funding acquisition was provided by Jiayou Wang. The experimental design was performed by Zhengyu Zhu, Jiayou Wang, Shubin Liu, and Jie Zhu. The investigation was completed by Zhengyu Zhu, Xuyang Li, Luxiao Zhang, and Yuqing Jiang. The manuscript was written by Zhengyu Zhu, Jiayou Wang, Shubin Liu, and Yuqing Jiang. All authors read and approved the final manuscript.

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Correspondence to Jiayou Wang or Shubin Liu.

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Zhu, Z., Wang, J., Liu, S. et al. Thick-wire swing arc narrow gap GMA welding assisted by pre-embedding cold wires. Int J Adv Manuf Technol 131, 301–313 (2024). https://doi.org/10.1007/s00170-024-13093-x

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  • DOI: https://doi.org/10.1007/s00170-024-13093-x

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