• Chinese Journal of Lasers
  • Vol. 46, Issue 4, 0402010 (2019)
Zhaohui Yu1、*, Zhong Wen1, Wei Li1, Guohua Yan1, and Dong Li2
Author Affiliations
  • 1 State Nuclear Power Plant Service Company, Shanghai 200233, China
  • 2 Shanghai University of Engineering Science, Shanghai 201620, China
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    DOI: 10.3788/CJL201946.0402010 Cite this Article Set citation alerts
    Zhaohui Yu, Zhong Wen, Wei Li, Guohua Yan, Dong Li. Laser Remelting for Inner Face of Small-Bore Tube Based on Ring Focusing[J]. Chinese Journal of Lasers, 2019, 46(4): 0402010 Copy Citation Text show less

    Abstract

    A self-developed laser processing system consisting of discrete designed transformation module and reflected ring focusing module is employed to re-melt the inner face of small-bore tube, and the macro appearances and microstructures of remelted layers are analyzed in details. The results show that the processing system can re-melt the inner face of the small-bore tube with diameter below 30 mm without a rotating mechanism. The quality of remelted layer is good without spiral overlapping edges and ripples under the optimum processing parameters. The molten pool is ring-shape and the cracking tendency is remedied obviously. The penetration of remelted layer increases first and then decreases with the increase of the number of laser scanning, and the penetration and surface toughness reduce with the increase of scanning speed.
    Zhaohui Yu, Zhong Wen, Wei Li, Guohua Yan, Dong Li. Laser Remelting for Inner Face of Small-Bore Tube Based on Ring Focusing[J]. Chinese Journal of Lasers, 2019, 46(4): 0402010
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