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Activating flux design for laser welding of ferritic stainless steel

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Abstract

The behaviors of YAG laser welding process of ferritic stainless steel with activating fluxes were investigated in this study. Some conventional oxides, halides and carbonates were applied in laser welding. The results showed that the effect of oxides on the penetration depth was more remarkable. Most activating fluxes improved the penetration more effectively at low power than that at high power. The uniform design was adopted to arrange the formula of multicomponent activating fluxes, showing that the optimal formula can make the penetration depth up to 2.23 times as large as that without flux, including 50% ZrO2, 12.09% CaCO3, 10.43% CaO and 27.48% MgO. Through the high-speed photographs of welding process, CaF2 can minimize the plasma volume but slightly improve the penetration capability.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China

    Li Ma  (马 立), Shengsun Hu  (胡绳荪), Bao Hu  (胡 宝), Junqi Shen  (申俊琦) & Yonghui Wang  (王勇慧)

  2. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin, 300072, China

    Li Ma  (马 立), Shengsun Hu  (胡绳荪), Bao Hu  (胡 宝), Junqi Shen  (申俊琦) & Yonghui Wang  (王勇慧)

  3. Research Institute, Baoshan Iron & Steel Co., Ltd., Shanghai, 200431, China

    Li Ma  (马 立)

Authors
  1. Li Ma  (马 立)
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  2. Shengsun Hu  (胡绳荪)
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  3. Bao Hu  (胡 宝)
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  4. Junqi Shen  (申俊琦)
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  5. Yonghui Wang  (王勇慧)
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Corresponding author

Correspondence to Junqi Shen  (申俊琦).

Additional information

Supported by the Research Institute, Baoshan Iron & Steel Co., Ltd.

Ma Li, born in 1981, male, doctorate student.

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Ma, L., Hu, S., Hu, B. et al. Activating flux design for laser welding of ferritic stainless steel. Trans. Tianjin Univ. 20, 429–434 (2014). https://doi.org/10.1007/s12209-014-2243-5

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  • DOI: https://doi.org/10.1007/s12209-014-2243-5

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