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<p>This study aims to optimize the single-track process parameters (laser power <i>P</i>, scanning speed <i>V</i>, powder feed rate <i>F</i>) and multi-track, multi-layer path parameters (overlap distance <i>L</i>, <i>Z</i>-axis increment Δ<i>Z</i>) in In625 laser cladding. The optimization objectives include clad width <i>W</i>, height <i>H</i>, melt pool area <i>S</i>, and dilution rate <i>D</i>. A Taguchi experimental design was employed, utilizing bubble plots and surface plots to visually present the influence trends of process parameters on the optimization objectives. Analysis of variance (ANOVA) and signal-to-noise ratio (S/N) analysis were conducted to assess the significance and impact of the process parameters on the optimization objectives. Using the entropy-weight TOPSIS method, the optimal parameter combination (<i>P</i> = 450W, <i>V</i> = 9&#xa0;mm/s, <i>F</i> = 10.21&#xa0;g/min) was determined based on the <i>C</i> value of the comprehensive evaluation index. The path parameters were optimized using a combination of theoretical analysis and experimentation to obtain the optimal overlap distance (<i>L</i> = 730&#xa0;μm) and <i>Z</i>-axis increment (Δ<i>Z</i> = 180&#xa0;μm). The optimized parameters were validated through multi-track, multi-layer experiments, and the results show that the fusion cladding layer prepared with the optimized parameters has a uniform and dense organization, uniform hardness distribution, small fluctuation of friction coefficient, and stable performance of the fusion cladding layer. The optimized parameters contribute to the effective implementation of multi-track, multi-layer laser cladding processes, providing a reliable foundation for surface repair and modification in practical applications.</p>

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Comprehensive optimization of In625 laser cladding: from process parameters to path parameters

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Yingying Zhang,
  • Jiayu Sun,
  • Yiqi Wang,
  • Zhengyu Sun,
  • Yanchong Gao,
  • Tianbiao Yu

摘要

This study aims to optimize the single-track process parameters (laser power P, scanning speed V, powder feed rate F) and multi-track, multi-layer path parameters (overlap distance L, Z-axis increment ΔZ) in In625 laser cladding. The optimization objectives include clad width W, height H, melt pool area S, and dilution rate D. A Taguchi experimental design was employed, utilizing bubble plots and surface plots to visually present the influence trends of process parameters on the optimization objectives. Analysis of variance (ANOVA) and signal-to-noise ratio (S/N) analysis were conducted to assess the significance and impact of the process parameters on the optimization objectives. Using the entropy-weight TOPSIS method, the optimal parameter combination (P = 450W, V = 9 mm/s, F = 10.21 g/min) was determined based on the C value of the comprehensive evaluation index. The path parameters were optimized using a combination of theoretical analysis and experimentation to obtain the optimal overlap distance (L = 730 μm) and Z-axis increment (ΔZ = 180 μm). The optimized parameters were validated through multi-track, multi-layer experiments, and the results show that the fusion cladding layer prepared with the optimized parameters has a uniform and dense organization, uniform hardness distribution, small fluctuation of friction coefficient, and stable performance of the fusion cladding layer. The optimized parameters contribute to the effective implementation of multi-track, multi-layer laser cladding processes, providing a reliable foundation for surface repair and modification in practical applications.