Abstract
Spectral information during the laser welding of galvanized steel was obtained. The plasma spectra were analyzed under different laser power and sheet gaps; signal filter method and statistical method were used to process the obtained spectral information. It was found that the plasma temperature increased with the increment of laser power, and plasma temperature and spectral intensity would be the least under proper sheet gaps. Statistical process control method was used to analyze the relationship between the welding quality and the spectral information, and it was found that the welding defects of the laser welding of galvanized steel could be automatically detected by the spectral information.
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Acknowledgements
This work was supported by the National Key R&D Program of China under the Grant (2018YFB1107900), the Shandong Provincial Natural Science Foundation, China (ZR2017MEE042), the Shandong Provincial Key Research and Development Program (2018GGX103026).
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Chen, B., Chen, Z., Cheng, H., Tan, C., Feng, J. (2019). Spectral Analysis of the Plasma Emission During Laser Welding of Galvanized Steel with Fiber Laser. In: Chen, S., Zhang, Y., Feng, Z. (eds) Transactions on Intelligent Welding Manufacturing. Transactions on Intelligent Welding Manufacturing. Springer, Singapore. https://doi.org/10.1007/978-981-13-7418-0_3
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DOI: https://doi.org/10.1007/978-981-13-7418-0_3
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