Abstract
The transverse auxiliary magnetic field (TAMF) is employed to eliminate the saddle-shaped weld bead defect in spiral submerged arc welded (SSAW) steel linepipe. The force-balance analysis and numerical simulation of heat and fluid flow in the weld pool elucidate the mechanism why the applied TAMF is able to improve the weld morphology. It is found that optimal matching of welding process parameters and the TAMF intensity is beneficial to obtain satisfactory microstructures and mechanical properties of the welded joints. This work provides an effective solution for overcoming the saddle-shaped formation defect on the inner wall of multi-wire SSAW steel linepipe and enhancing the service performance of long-distance oil and gas transmission pipelines.
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Funding
The authors are grateful to the financial support for this research from the National Natural Science Foundation of China (grant no. 51305461), the Natural Science Foundation of Shandong Province (grant no. ZR2018MEE020), and College Students’ Platform for Innovation and Entrepreneurship Training Program (grant no. 20190269 and 202006041).
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Zhao, M., Feng, X., Cui, Z. et al. Influence of transverse auxiliary magnetic field on weld formation and joint quality in spiral submerged arc welding of X80 steel linepipe. Weld World 66, 2497–2508 (2022). https://doi.org/10.1007/s40194-022-01371-9
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DOI: https://doi.org/10.1007/s40194-022-01371-9