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An adaptive welding method for grooves with position and size errors

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Abstract

A large batch of mass-produced components, represented by architectural steel structure joint spheres, is influenced by the upstream processing technology level, making it difficult to maintain the position and dimensions of the groove assembly within the standard size range. This results in the inability to use the same process parameters and welding strategy for all weld joints during welding. For components with significant groove size errors, a U-shaped residual network (U-ResNet) was established and employed to segment laser stripe images at the grooves and effectively extract feature data. Subsequently, based on the groove’s position and size information, an established prediction model was used to adaptively output process parameters. Finally, validation experiments were conducted on actual components. The range of variation in the height dimension of the joint sphere’s circumferential weld seam was within 2 mm, with no unfused defects. The entire welding process took 20 min, meeting the requirements for industrial on-site production.

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Data Availability

Data available on request from the authors.

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Funding

This work was supported by Excellent Doctoral Program of Natural Science Foundation of Gansu Province of China (22JR5RA239), National Natural Science Foundation of China (#52005237), Major Science and Technology Project of Gansu Province of China (22ZD6GA008), and Zhejiang Provincial Natural Science Foundation of China under Grant (LQ21E050023).

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Authors and Affiliations

  1. State Key Laboratory of Advanced Processing and Recycling Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, Gansu, China

    Wenkai Wang, Yu Shi, Chunkai Li & Yufen Gu

  2. Zhejiang E.O. Paton Welding Technology Institute, Hangzhou, 311200, Zhejiang, China

    Muzhong Xu & Fengxian Dai

  3. Wenzhou Engineering Institute of Pump & Valve, Lanzhou University of Technology, Wenzhou, 325105, Zhejiang, China

    Chunkai Li

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  1. Wenkai Wang
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  2. Yu Shi
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  3. Chunkai Li
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  4. Yufen Gu
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  5. Muzhong Xu
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  6. Fengxian Dai
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Correspondence to Yu Shi.

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Recommended for publication by Commission XII - Arc Welding Processes and Production Systems.

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Wang, W., Shi, Y., Li, C. et al. An adaptive welding method for grooves with position and size errors. Weld World 68, 755–764 (2024). https://doi.org/10.1007/s40194-023-01629-w

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