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<p>In wire laser additive manufacturing (WLAM), wire feeding angle has significant effect on the absorption of laser energy by the wire and substrate metals and the transfer behaviors of molten metal which are highly related to the deposited layer formation process. A 3D numerical model for WLAM&#xa0;considering the irradiation of laser energy on the surface of wire metal is established in this paper&#xa0;to calculate&#xa0;the molten metal transfer behaviors and deposited layer formation process. The influence of wire feeding angle on the mixing molten pool dynamic behaviors is analyzed from the aspects of laser energy absorption, temperature distribution and flow behaviors. It is found that the laser energy obtained by wire metal is increased with the increasing wire feeding angle and hence&#xa0;the laser energy obtained by substrate metal is reduced, which results in the decrease of the width of mixing molten pool. The temperature distribution&#xa0;difference between the wire&#xa0;droplet and the center region of&#xa0;mixing molten pool is decreased under the condition of&#xa0;larger wire feeding angle and the stable time of mixing molten pool is extended. The results are of great importance for the process condition optimization to improve the quality of WLAM.</p>

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Analysis for Influence of Wire Feeding Angle on Laser Energy Absorption and Deposited Layer Forming Behaviors During Wire Laser Additive Manufacturing

  • 期刊论文

  • 发表日期：

    2025年4月2日

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  • Yuewei Ai,
  • Yiyuan Wang,
  • Yang Zhang,
  • Pengcheng Yuan

摘要

In wire laser additive manufacturing (WLAM), wire feeding angle has significant effect on the absorption of laser energy by the wire and substrate metals and the transfer behaviors of molten metal which are highly related to the deposited layer formation process. A 3D numerical model for WLAM considering the irradiation of laser energy on the surface of wire metal is established in this paper to calculate the molten metal transfer behaviors and deposited layer formation process. The influence of wire feeding angle on the mixing molten pool dynamic behaviors is analyzed from the aspects of laser energy absorption, temperature distribution and flow behaviors. It is found that the laser energy obtained by wire metal is increased with the increasing wire feeding angle and hence the laser energy obtained by substrate metal is reduced, which results in the decrease of the width of mixing molten pool. The temperature distribution difference between the wire droplet and the center region of mixing molten pool is decreased under the condition of larger wire feeding angle and the stable time of mixing molten pool is extended. The results are of great importance for the process condition optimization to improve the quality of WLAM.